South Korea

Represented Lotte Insurance and KDB Life Insurance, respectively, in lawsuits against Hana Alternative Asset Management, a Korean collective investment business entity, and Meritz Securities, a Korean investment trader. 

Acted as the legal adviser for Korea Southern Power regarding a 510MW wind-farm construction project in Jeonnam, Shinan, Korea. 

Key clients 

KERR Canada Energy 

Work highlights 

Represented T Renewable in connection with the project financing of a rooftop solar power generation initiative implemented through its subsidiary, Korea Factory Rooftop Solar Power Holding. 

Advised Mirae Asset Securities and the lending syndicate on the KRW Two Trillion project financing for the K-Project in Seongsu-dong district of Korea, a mixed-use development project that includes the construction of Krafton’s new headquarters on the former E-mart head office site. 

An undisputed premier firm, Lee & Ko holds steady in the rankings as a fool-proof choice for its impressive roster of offshore and onshore clients. Its renowned finance practice wins plaudits from peers and clients that acknowledge its frequent role in representing lenders. The firm was elevated this year into the ‘Outstanding’ tiers for labour and employment and real estate. Lee & Ko’s traditional dominance in debt capital markets helped it maintain a steady flow of debt deals. Managing partner Yong Seok Ahn is recognised for his corporate and competition expertise.  

The firm has continued to evolve its practice areas through strategic hiring and internal changes. In the dispute resolution sector, Lee & Ko strengthened its team with key hires, including partners Young Su Kang, Tai Han Ha and Eun Pyo Hong in March 2025, and Eun Young Park in October 2024. The competition practice was bolstered by the addition of senior advisor Moo Jin Choi from the Korea Fair Trade Commission in March 2025. 

The firm has bolstered its intellectual property practice with a key partner-level hires in the past year. Hankil D. Kang joined the firm as a partner in May 2024, from Bae, Kim & Lee. These strategic appointments underscore Lee & Ko's commitment to expanding its IP capabilities, particularly in healthcare-related fields. 

Client feedback 

"At Lee & Ko, they demonstrated a clear and thorough understanding of our business and its unique characteristics. Rather than providing general legal advice, they offered precise, tailored answers that addressed the specific issues we faced. Moreover, they provided clear and practical guidance on how to resolve those issues effectively, helping us make well-informed decisions at each stage. Their ability to grasp the core of our business and deliver relevant, actionable solutions was especially valuable." – Competition/antitrust 

"Lee & Ko actively seeks to understand the company's business areas and provides effective solutions based on this understanding." – Competition/antitrust 

"They are professional and excellent." – Competition/antitrust 

"Lee & Ko demonstrates strong expertise across a wide range of regulatory and compliance matters, particularly in complex areas such as competition law and corporate investigations. 
The firm is known for its depth of legal analysis, clear strategic advice, and ability to provide practical solutions tailored to the client’s business context. Their responsiveness and collaborative approach make them a reliable partner in sensitive and time-pressured situations. Overall, Lee & Ko combines legal excellence with commercial awareness, which makes their counsel both actionable and effective." – Competition/antitrust 

"They have top-tier experts and professional legal support." – Competition/antitrust 

"Lee & Ko conducted a thorough review with a high level of expertise and presented various alternatives." – Competition/antitrust  

"Lee & Ko combines deep legal expertise with a strong understanding of the Korean regulatory and business landscape. The firm is highly responsive and practical and consistently delivers high-quality advice across complex matters. Their client-focused approach and professionalism make them a trusted partner in both domestic and cross-border issues." – Competition/antitrust 

"They have great expertise and are easy to communicate with." – Competition/antitrust 

"The law firm holds business-specific professional expertise." – Competition/antitrust 

"As OK Financial Group was recently designated as a large business group by the KFTC, it is undergoing its first investigation by the KFTC. In this unfamiliar situation, Lee & Ko has been providing proactive and effective support in responding to the investigation. Moreover, they have been offering practical advice to help mitigate future risks related to fair trade compliance." – Competition/antitrust 

"Lee & Ko demonstrated exceptional diligence in investigating the factual basis of our case. Their thorough approach to fact-finding appears to have been a critical factor in the successful outcome of the litigation. Effective legal representation in damages lawsuits requires a comprehensive understanding of all relevant circumstances, and Lee & Ko excelled in this aspect of their service. The firm appears to have developed and executed an effective litigation strategy based on their thorough fact investigation. In damages lawsuits, establishing or refuting the elements of liability (duty, breach, causation and damages) requires strategic planning and execution." – Corporate and M&A 

"Their answers are always reliable and prompt." – Corporate and M&A 

"Lee & Ko is a premier Korean law firm with a well-earned reputation for legal excellence, strategic insight, and client dedication. The firm’s strength lies in its ability to deliver sophisticated, commercially sound advice across a wide range of complex legal issues, particularly in cross-border disputes and international arbitration. One of the most commendable aspects of Lee & Ko is its deep bench of highly skilled professionals who work seamlessly across practice areas. The firm demonstrates a clear understanding of client objectives, and its advice consistently reflects both technical precision and practical judgement." – Dispute resolution 

"Lee & Ko has a deep understanding of trademark law and provides practical, business-orientated advice. Their team is highly responsive, detail-orientated, and reliable in managing both domestic and international trademark matters." – Intellectual property 

"They analysed the technology in detail and reviewed the risks with suggested alternatives." – Intellectual property 

"Lee & Ko is one of the most prestigious law firms in Korea, and its diverse range of expertise enables effective communication among specialists from various fields. This collaboration ensures that clients receive accurate, comprehensive responses in a timely manner." – Intellectual property 

Jeong Yoon Choi 

"Jeongyoon is a highly knowledgeable and reliable expert in Korean competition law. She has a clear ability to analyse complex regulatory issues and translate them into practical, business-orientated advice. Her communication is always precise, timely, and solution-focused, which makes her an effective partner in both advisory and contentious matters. Her calm and thoughtful approach builds trust with clients, and her deep understanding of KFTC practice adds significant value to strategic decision-making." 

Byong Ki Chung 

"He demonstrates exceptional legal expertise and thorough understanding of complex issues. He is highly responsive and communicates clearly, ensuring that clients are always well-informed. His practical approach and attention to detail enable him to deliver effective solutions tailored to the client’s needs. Additionally, his professionalism and dedication build strong trust and confidence in his work." 

Sanghoon Han 

"Sanghoon is a highly capable and practical lawyer, particularly skilled in navigating complex construction disputes. What sets him apart is not just his deep knowledge of international arbitration and construction law but also the clarity and focus he brings to fast-moving, high-stakes matters. He has a unique ability to break down technically and legally complex issues into clear, manageable strategies – always keeping the big picture in mind while paying close attention to detail. In our experience, Sanghoon is exceptionally responsive. He’s consistently available, quick to grasp evolving issues, and solution-orientated in a way that gives clients real confidence. Even under tight deadlines or with complicated procedural developments, he remains calm, clear-headed, and constructive. Equally important, he’s a pleasure to work with. His collaborative and down-to-earth style makes it easy to align quickly on strategy, even across jurisdictions and teams. That combination of legal acumen, responsiveness, and approachable professionalism is rare – and extremely valuable in high-stakes cross-border matters." 

Jang Hyun Ka 

"He has been serving as the main handler in the current KFTC investigation, providing highly proactive and hands-on advice. Despite the fast-moving and urgent nature of the situation, he has responded swiftly and delivered effective, well-calibrated counsel based on his extensive experience." 

"He excels in communication with clients and responds quickly and proactively." 

Ji Yeon Kim 

"She does a thorough fact investigation and strategic case management." 

“She successfully completes the given mission with positive thinking and unyielding will.” 

Jaewoo Kwak 

"Jaewoo provides prompt and clear advice on trademark matters. He is professional, attentive to detail, and offers practical solutions tailored to our business needs." 

"He responds positively to new questions without panicking." 

"Jaewoo is the type of person you enjoy working with, both professionally and personally. He has been instrumental in applying his expertise in intellectual property across various fields. His exceptional knowledge and dedication have earned him the distinction of being named Attorney of the Year in Korea for consecutive years." 

In Seon Lee 

"He is aggressive, professional, and kind." 

Miji Lee 

"With over 20 years of experience in the field of competition law, her deep knowledge and practical expertise have been an invaluable asset to our company. Her extensive understanding of both legal regulations and industry practices allowed her to provide advice that was not only legally sound but also highly relevant to the realities of our business operations. Her ability to anticipate potential regulatory risks and suggest proactive, practical solutions helped us navigate complex situations with confidence. Her insights into subcontracting regulations, fair trade practices, and competition compliance significantly contributed to strengthening our internal systems and decision-making processes. Thanks to her guidance, we were able to manage sensitive business matters more effectively and minimise legal exposure in critical areas." 

Hyun Ah Song 

"She always provides positive speech and friendly answers." 

Jeong-Ho Sun 

"He understands even the most complex issues very well from the company’s perspective and always provides the best advice, which is why we keep turning to him. He has particularly strong insights into fair trade matters and is highly regarded in other areas of laws and regulations as well." 

"He has great expertise, is easy to communicate with, and has great relationships." 

"He has good communication with clients and expertise in competition law." 

Work highlights 

Represented a syndicate of 40 Korean lenders and the mandated lead arrangers (Kiwoom Securities, NH Investment & Securities, NongHyup Bank and Kookmin Bank) as lenders in the acquisition financing of IMM Private Equity’s W1.7 trillion ($1.2 billion) buyout of Korea’s leading waste-management company, Ecorbit, from KKR and Taeyoung Group, Korea’s largest M&A transaction of 2024. 

Represented Standard Chartered Bank (Hong Kong) as the Korean counsel in the secured financing of HMM’s acquisition of nine second-hand bulk carriers through a $270 million bareboat-charter hire-purchase structure, structuring a novel nomination arrangement that allowed HMM to take delivery with its own funds and later be reimbursed via the loan. 

Yulchon secures its place in the ‘Outstanding’ band for competition, dispute resolution, M&A, private equity and tax this year. Its famed dispute resolution practice has more than 250 professionals and keeps apace with an evolving market, creating new disputes practice areas that are novel and innovative.  

The firm has strategically bolstered its team through key hires across various practice areas. The competition/antitrust practice has been particularly active in recruitment, welcoming Genny S Kim from Jipyong as a partner. However, the practice also saw the departures of Hyo Sung Kim in June 2024. 

The dispute resolution practice underwent substantial growth, welcoming three new partners including Jinsub Kim from Samsung C&T legal team dispute resolution TF, Shi Won Lee from a role as Secretary to the President for Public Office Discipline, and Jae Hwan Shin from National Court Administration. Two partners departed – Rak Hyun Kim to SK Group and Jae Eok Park. 

In the tax practice, Yulchon made strategic hires including Kwang Lae Cho from the Tax Tribunal, Jung Wook Jun from Samsung Life Insurance, and Se Bin Lee from Supreme Court of Korea. 

Work highlights 

Represented KB Asset Management as mezzanine-lender counsel in the acquisition of a tranche of existing senior debt secured by one Airbus A350-900 on lease to Singapore Airlines, negotiating security-sharing amendments and Muzinich profit-participation-note documentation in a challenging aviation-finance market. 

Represented NH Amundi Asset Management as mezzanine-lender counsel in the financing of one Boeing 787-8 on lease to Qatar Airways, negotiating a $49.9 million senior-loan extension and Muzinich junior-note structure in a challenging aviation-finance market. 

Key clients 

Samsung Asset Management, Macquarie Asset Management, NH Investment & Securities 

Work highlights 

Advised Mirae Asset Securities (as lead manager) and Oncocross on its successful listing on the Kosdaq. The listing of Oncocross marked a significant and rare IPO success in a challenging capital markets environment. 

Advised Korea Investment & Securities (as lead underwriter) and Next Biomedical on its IPO on the Kosdaq. The book-building drew strong demand from 1,116 institutional investors, achieving a 356.9:1 competition ratio. 

Client feedback 

"They are professional." – Competition/antitrust 

"The law firm offers accurate, tailored advice for business and timely communication. They are responsive, detail-orientated, and excellent at collaboration." – Competition/antitrust 

"They are professional, high quality, and timely." – Corporate and M&A 

"Excellent expertise, great team, deep market understanding, outstanding individuals." – Dispute resolution 

"Kim & Chang provided solutions based on its accumulated experience and professional legal expertise, after thoroughly considering the client’s needs. It makes full use of internal resources and strives to achieve the best possible outcome. What is particularly impressive is that they do not merely respond to questions but proactively think from the client’s perspective to identify effective solutions." – Dispute resolution 

"The strongest attribute of Kim & Chang is they have experienced consultants from each industry, former government officers, and specialised lawyers by subject." – Dispute resolution 

"Kim & Chang is the largest law firm in South Korea, and their network to gain relevant information and manage relevant stakeholders is strong enough to guarantee a positive outcome." – Dispute resolution 

"Among all law firms, Kim & Chang stands out for its unmatched expertise and extensive track record in corporate governance restructuring matters – particularly those involving the formation of holding companies and the conversion of branches into subsidiaries in Korea. With a deep bench of seasoned experts and proven know-how, the law firm consistently earned our trust as a reliable partner for such critical mandates." – Insurance 

"Kim & Chang boasts a diverse team of top-tier experts across various fields and is exceptionally efficient in handling matters. For instance, in a recent advisory case that required the opinion of an actuary, other law firms were unable to provide timely support due to the lack of in-house actuarial professionals. In contrast, Kim & Chang was able to deliver the necessary opinion swiftly, as it has its own in-house actuary." – Insurance  

"Kim & Chang is consistently hands-on throughout every stage of the process, demonstrating a deep commitment to understanding our specific needs. They offer practical, actionable advice that is tailored to real-world applications, helping us navigate complex legal challenges with confidence. Additionally, they provide a comprehensive understanding of the issues at hand, ensuring that we see the full picture and potential implications before making any decisions. This thorough approach enables us to make informed choices and effectively manage risks." – Labour and employment 

"I believe they are one of the very few law firms capable of providing detailed insights into their experiences, including enforcement trends observed from regulatory authorities. They approached the case with passion and a proactive mindset." – Regulatory 

"Kim & Chang is highly competent technically but also adopts a very practical approach towards conflict resolution. They are able to help manage the tax office very well and keep them focused on the key issues for resolution." – Tax 

"Kim & Chang is by far the most technically advanced advisors I have worked with in South Korea. Apart from being technically strong in all tax-related matters and constantly updating themselves on the changing regulations in the jurisdiction, they also take the time and effort to educate me on various initiatives that would be of benefit for my organisation. They are diligent, they are hard-working, and they provide exemplary service on a daily basis." – Tax 

Jongwon Jeon 

"Very professional, smart and knowledgeable on subject matter." 

"He is very actively collaborating with clients and contactable any time when I need to talk with him. He has a good insight into the legal system and business nature, especially in the medical device, pharmaceutical and healthcare service space, and he is good at designing a solution for a legal case from the beginning to the end." 

"His strength lies in his ability to evaluate the broad implications of a case through thorough risk analysis, while also offering rapid legal consultation for key decisions. He’s highly engaged in his work and always considers what’s best for the client. He is committed to leveraging the law firm’s internal resources to maximise client value." 

"First of all, he is super-professional and has a strong sense of responsibility. He works very hard and always gives us a clear response and action whenever we share any input. He's also knowledgeable enough to manage any legal issues of the alcohol industry. His professional management of a client and a case makes us feel comfortable about the positive outcome." 

"I've been working with him for several years on various matters, including audits, corporate governance, competition law, and litigation. He is a highly dedicated professional who consistently demonstrates exceptional analytical and problem-solving skills, and he exercises excellent judgement when providing legal advice. He has provided clear and practical guidance." 

"Mr. Jeon is consistently hands-on throughout every stage of the process, demonstrating a deep commitment to understanding our specific needs. He is very responsive and deeply cares about his clients, ensuring clear and timely communication at all times. Mr. Jeon offers practical, actionable advice tailored to real-world applications, helping us navigate complex legal challenges with confidence. Additionally, he provides a comprehensive understanding of the issues at hand, ensuring that we see the full picture and potential implications before making any decisions. This thorough approach enables us to make informed choices and effectively manage risks." 

Byung-Wha Kim 

"He provided professional and practical advice in the field of antitrust law." 

Chanik Park 

"He is professional." 

Hyun Wook Shin 

"Based on his extensive experience in corporate advisory, he does not offer abstract or surface-level solutions. Instead, he consistently strives to understand issues from the company's perspective and provide practical, tailored legal guidance." 

"He possesses top-tier expertise in the insurance sector, accurately identifies clients’ issues, and provides clear and effective solutions." 

 Kenny Sung 

"Kenny is very knowledgeable and practical. I have only good things to say about Kenny. He has helped us through a number of tax audits and other tax issues in South Korea. He's always been able to give practical solutions that make a difference. More importantly, he's always helped us obtain a good result."  

"Kenny is the primary contact at Kim & Chang and is the liaison between us and the broader Kim & Chang organisation. Over the past five years, Kenny has provided the most incredible service that I am still recommending him to other colleagues of mine in other organisations. He is hard-working, diligent, technically advanced, and provides excellent customer support daily. He is an exceptional leader, and I can see how he brings up other team members in our interactions to provide them with the opportunity to learn and advance in their careers." 

"Active and productive communication with HQ counterparts and NTS with strong knowledge in a gentle manner." 

Michael Yu 

"Excellent advisor, great communicator, very structured, reliable, understands clients' needs." 

Work highlights 

Represented Kakao Corporation and Kakao Entertainment in advising on the acquisition of SM Entertainment and on the business combination notification. This case was particularly significant as it was the first merger to address issues of self-preferencing, involving numerous complex legal matters. 

Advised Hanwha Engine (as a stakeholder) on the business combination between HD Hyundai and STX Heavy Industries (leading to corrective measures). This case is expected to better set an important precedent for future high-profile mergers, paving the way for stakeholders affected by such mergers to participate in the Korea Fair Trade Commission’s review and deliberation processes actively and formally. 

Key clients 

HYBE, Musicow, SK Shieldus, SPC Group 

An undisputed premier firm, Lee & Ko holds steady in the rankings as a fool-proof choice for its impressive roster of offshore and onshore clients. Its renowned finance practice wins plaudits from peers and clients that acknowledge its frequent role in representing lenders. The firm was elevated this year into the ‘Outstanding’ tiers for labour and employment and real estate. Lee & Ko’s traditional dominance in debt capital markets helped it maintain a steady flow of debt deals. Managing partner Yong Seok Ahn is recognised for his corporate and competition expertise.  

The firm has continued to evolve its practice areas through strategic hiring and internal changes. In the dispute resolution sector, Lee & Ko strengthened its team with key hires, including partners Young Su Kang, Tai Han Ha and Eun Pyo Hong in March 2025, and Eun Young Park in October 2024. The competition practice was bolstered by the addition of senior advisor Moo Jin Choi from the Korea Fair Trade Commission in March 2025. 

The firm has bolstered its intellectual property practice with a key partner-level hires in the past year. Hankil D. Kang joined the firm as a partner in May 2024, from Bae, Kim & Lee. These strategic appointments underscore Lee & Ko's commitment to expanding its IP capabilities, particularly in healthcare-related fields. 

Client feedback 

"At Lee & Ko, they demonstrated a clear and thorough understanding of our business and its unique characteristics. Rather than providing general legal advice, they offered precise, tailored answers that addressed the specific issues we faced. Moreover, they provided clear and practical guidance on how to resolve those issues effectively, helping us make well-informed decisions at each stage. Their ability to grasp the core of our business and deliver relevant, actionable solutions was especially valuable." – Competition/antitrust 

"Lee & Ko actively seeks to understand the company's business areas and provides effective solutions based on this understanding." – Competition/antitrust 

"They are professional and excellent." – Competition/antitrust 

"Lee & Ko demonstrates strong expertise across a wide range of regulatory and compliance matters, particularly in complex areas such as competition law and corporate investigations. 
The firm is known for its depth of legal analysis, clear strategic advice, and ability to provide practical solutions tailored to the client’s business context. Their responsiveness and collaborative approach make them a reliable partner in sensitive and time-pressured situations. Overall, Lee & Ko combines legal excellence with commercial awareness, which makes their counsel both actionable and effective." – Competition/antitrust 

"They have top-tier experts and professional legal support." – Competition/antitrust 

"Lee & Ko conducted a thorough review with a high level of expertise and presented various alternatives." – Competition/antitrust  

"Lee & Ko combines deep legal expertise with a strong understanding of the Korean regulatory and business landscape. The firm is highly responsive and practical and consistently delivers high-quality advice across complex matters. Their client-focused approach and professionalism make them a trusted partner in both domestic and cross-border issues." – Competition/antitrust 

"They have great expertise and are easy to communicate with." – Competition/antitrust 

"The law firm holds business-specific professional expertise." – Competition/antitrust 

"As OK Financial Group was recently designated as a large business group by the KFTC, it is undergoing its first investigation by the KFTC. In this unfamiliar situation, Lee & Ko has been providing proactive and effective support in responding to the investigation. Moreover, they have been offering practical advice to help mitigate future risks related to fair trade compliance." – Competition/antitrust 

"Lee & Ko demonstrated exceptional diligence in investigating the factual basis of our case. Their thorough approach to fact-finding appears to have been a critical factor in the successful outcome of the litigation. Effective legal representation in damages lawsuits requires a comprehensive understanding of all relevant circumstances, and Lee & Ko excelled in this aspect of their service. The firm appears to have developed and executed an effective litigation strategy based on their thorough fact investigation. In damages lawsuits, establishing or refuting the elements of liability (duty, breach, causation and damages) requires strategic planning and execution." – Corporate and M&A 

"Their answers are always reliable and prompt." – Corporate and M&A 

"Lee & Ko is a premier Korean law firm with a well-earned reputation for legal excellence, strategic insight, and client dedication. The firm’s strength lies in its ability to deliver sophisticated, commercially sound advice across a wide range of complex legal issues, particularly in cross-border disputes and international arbitration. One of the most commendable aspects of Lee & Ko is its deep bench of highly skilled professionals who work seamlessly across practice areas. The firm demonstrates a clear understanding of client objectives, and its advice consistently reflects both technical precision and practical judgement." – Dispute resolution 

"Lee & Ko has a deep understanding of trademark law and provides practical, business-orientated advice. Their team is highly responsive, detail-orientated, and reliable in managing both domestic and international trademark matters." – Intellectual property 

"They analysed the technology in detail and reviewed the risks with suggested alternatives." – Intellectual property 

"Lee & Ko is one of the most prestigious law firms in Korea, and its diverse range of expertise enables effective communication among specialists from various fields. This collaboration ensures that clients receive accurate, comprehensive responses in a timely manner." – Intellectual property 

Jeong Yoon Choi 

"Jeongyoon is a highly knowledgeable and reliable expert in Korean competition law. She has a clear ability to analyse complex regulatory issues and translate them into practical, business-orientated advice. Her communication is always precise, timely, and solution-focused, which makes her an effective partner in both advisory and contentious matters. Her calm and thoughtful approach builds trust with clients, and her deep understanding of KFTC practice adds significant value to strategic decision-making." 

Byong Ki Chung 

"He demonstrates exceptional legal expertise and thorough understanding of complex issues. He is highly responsive and communicates clearly, ensuring that clients are always well-informed. His practical approach and attention to detail enable him to deliver effective solutions tailored to the client’s needs. Additionally, his professionalism and dedication build strong trust and confidence in his work." 

Sanghoon Han 

"Sanghoon is a highly capable and practical lawyer, particularly skilled in navigating complex construction disputes. What sets him apart is not just his deep knowledge of international arbitration and construction law but also the clarity and focus he brings to fast-moving, high-stakes matters. He has a unique ability to break down technically and legally complex issues into clear, manageable strategies – always keeping the big picture in mind while paying close attention to detail. In our experience, Sanghoon is exceptionally responsive. He’s consistently available, quick to grasp evolving issues, and solution-orientated in a way that gives clients real confidence. Even under tight deadlines or with complicated procedural developments, he remains calm, clear-headed, and constructive. Equally important, he’s a pleasure to work with. His collaborative and down-to-earth style makes it easy to align quickly on strategy, even across jurisdictions and teams. That combination of legal acumen, responsiveness, and approachable professionalism is rare – and extremely valuable in high-stakes cross-border matters." 

Jang Hyun Ka 

"He has been serving as the main handler in the current KFTC investigation, providing highly proactive and hands-on advice. Despite the fast-moving and urgent nature of the situation, he has responded swiftly and delivered effective, well-calibrated counsel based on his extensive experience." 

"He excels in communication with clients and responds quickly and proactively." 

Ji Yeon Kim 

"She does a thorough fact investigation and strategic case management." 

“She successfully completes the given mission with positive thinking and unyielding will.” 

Jaewoo Kwak 

"Jaewoo provides prompt and clear advice on trademark matters. He is professional, attentive to detail, and offers practical solutions tailored to our business needs." 

"He responds positively to new questions without panicking." 

"Jaewoo is the type of person you enjoy working with, both professionally and personally. He has been instrumental in applying his expertise in intellectual property across various fields. His exceptional knowledge and dedication have earned him the distinction of being named Attorney of the Year in Korea for consecutive years." 

In Seon Lee 

"He is aggressive, professional, and kind." 

Miji Lee 

"With over 20 years of experience in the field of competition law, her deep knowledge and practical expertise have been an invaluable asset to our company. Her extensive understanding of both legal regulations and industry practices allowed her to provide advice that was not only legally sound but also highly relevant to the realities of our business operations. Her ability to anticipate potential regulatory risks and suggest proactive, practical solutions helped us navigate complex situations with confidence. Her insights into subcontracting regulations, fair trade practices, and competition compliance significantly contributed to strengthening our internal systems and decision-making processes. Thanks to her guidance, we were able to manage sensitive business matters more effectively and minimise legal exposure in critical areas." 

Hyun Ah Song 

"She always provides positive speech and friendly answers." 

Jeong-Ho Sun 

"He understands even the most complex issues very well from the company’s perspective and always provides the best advice, which is why we keep turning to him. He has particularly strong insights into fair trade matters and is highly regarded in other areas of laws and regulations as well." 

"He has great expertise, is easy to communicate with, and has great relationships." 

"He has good communication with clients and expertise in competition law." 

Work highlights 

Represented the Korean Bar Associations as appellants in their successful appeal against the Korea Fair Trade Commission’s (KFTC)decision that sanctions banning attorneys from using the Law Talk legal-tech platform violated the Monopoly Regulation and Fair Trade Act, persuading the Seoul High Court on October 24, 2024 to overturn the KFTC ruling and uphold the Bar Associations’ regulatory authority under the Attorney-at-Law Act. 

Represented Yogiyo as defendant in the criminal prosecution brought by the Prosecutor’s Office concerning Yogiyo’s “lowest price guarantee” most-favoured-nation (MFN) pricing policy, securing a complete acquittal in the first instance, appellate and Supreme Court proceedings that established a precedent on intent standards for platform MFN clauses under Korea’s Monopoly Regulation and Fair Trade Act. 

Key clients 

Broadcom, Naver Corporation, Novo Holdings, One store 

Yulchon secures its place in the ‘Outstanding’ band for competition, dispute resolution, M&A, private equity and tax this year. Its famed dispute resolution practice has more than 250 professionals and keeps apace with an evolving market, creating new disputes practice areas that are novel and innovative.  

The firm has strategically bolstered its team through key hires across various practice areas. The competition/antitrust practice has been particularly active in recruitment, welcoming Genny S Kim from Jipyong as a partner. However, the practice also saw the departures of Hyo Sung Kim in June 2024. 

The dispute resolution practice underwent substantial growth, welcoming three new partners including Jinsub Kim from Samsung C&T legal team dispute resolution TF, Shi Won Lee from a role as Secretary to the President for Public Office Discipline, and Jae Hwan Shin from National Court Administration. Two partners departed – Rak Hyun Kim to SK Group and Jae Eok Park. 

In the tax practice, Yulchon made strategic hires including Kwang Lae Cho from the Tax Tribunal, Jung Wook Jun from Samsung Life Insurance, and Se Bin Lee from Supreme Court of Korea. 

Work highlights 

Represented Ansys as Korean merger-control counsel in Synopsys’s $35 billion acquisition (the largest 2024 tech deal), guiding the first-ever use of the Korean Fair Trade Commission’s (KFTC) new Parties’ Voluntary Remedy Proposal process while tailoring global divestiture remedies to Korean market conditions. 

Represented Shinsegae in the formation of a landmark Korean e-commerce joint venture with Alibaba International, contributing Gmarket and AliExpress Korea to create a combined platform aimed at competing with Coupang and Naver, while navigating the KFTC’s unprecedented merger review that will set the standard for future mega e-commerce alliances. 

Key clients 

Delta Air Lines, Evergreen Marine, Hana Bank, Shinhan Bank 

An undisputed premier firm, Lee & Ko holds steady in the rankings as a fool-proof choice for its impressive roster of offshore and onshore clients. Its renowned finance practice wins plaudits from peers and clients that acknowledge its frequent role in representing lenders. The firm was elevated this year into the ‘Outstanding’ tiers for labour and employment and real estate. Lee & Ko’s traditional dominance in debt capital markets helped it maintain a steady flow of debt deals. Managing partner Yong Seok Ahn is recognised for his corporate and competition expertise.  

The firm has continued to evolve its practice areas through strategic hiring and internal changes. In the dispute resolution sector, Lee & Ko strengthened its team with key hires, including partners Young Su Kang, Tai Han Ha and Eun Pyo Hong in March 2025, and Eun Young Park in October 2024. The competition practice was bolstered by the addition of senior advisor Moo Jin Choi from the Korea Fair Trade Commission in March 2025. 

The firm has bolstered its intellectual property practice with a key partner-level hires in the past year. Hankil D. Kang joined the firm as a partner in May 2024, from Bae, Kim & Lee. These strategic appointments underscore Lee & Ko's commitment to expanding its IP capabilities, particularly in healthcare-related fields. 

Client feedback 

"At Lee & Ko, they demonstrated a clear and thorough understanding of our business and its unique characteristics. Rather than providing general legal advice, they offered precise, tailored answers that addressed the specific issues we faced. Moreover, they provided clear and practical guidance on how to resolve those issues effectively, helping us make well-informed decisions at each stage. Their ability to grasp the core of our business and deliver relevant, actionable solutions was especially valuable." – Competition/antitrust 

"Lee & Ko actively seeks to understand the company's business areas and provides effective solutions based on this understanding." – Competition/antitrust 

"They are professional and excellent." – Competition/antitrust 

"Lee & Ko demonstrates strong expertise across a wide range of regulatory and compliance matters, particularly in complex areas such as competition law and corporate investigations. 
The firm is known for its depth of legal analysis, clear strategic advice, and ability to provide practical solutions tailored to the client’s business context. Their responsiveness and collaborative approach make them a reliable partner in sensitive and time-pressured situations. Overall, Lee & Ko combines legal excellence with commercial awareness, which makes their counsel both actionable and effective." – Competition/antitrust 

"They have top-tier experts and professional legal support." – Competition/antitrust 

"Lee & Ko conducted a thorough review with a high level of expertise and presented various alternatives." – Competition/antitrust  

"Lee & Ko combines deep legal expertise with a strong understanding of the Korean regulatory and business landscape. The firm is highly responsive and practical and consistently delivers high-quality advice across complex matters. Their client-focused approach and professionalism make them a trusted partner in both domestic and cross-border issues." – Competition/antitrust 

"They have great expertise and are easy to communicate with." – Competition/antitrust 

"The law firm holds business-specific professional expertise." – Competition/antitrust 

"As OK Financial Group was recently designated as a large business group by the KFTC, it is undergoing its first investigation by the KFTC. In this unfamiliar situation, Lee & Ko has been providing proactive and effective support in responding to the investigation. Moreover, they have been offering practical advice to help mitigate future risks related to fair trade compliance." – Competition/antitrust 

"Lee & Ko demonstrated exceptional diligence in investigating the factual basis of our case. Their thorough approach to fact-finding appears to have been a critical factor in the successful outcome of the litigation. Effective legal representation in damages lawsuits requires a comprehensive understanding of all relevant circumstances, and Lee & Ko excelled in this aspect of their service. The firm appears to have developed and executed an effective litigation strategy based on their thorough fact investigation. In damages lawsuits, establishing or refuting the elements of liability (duty, breach, causation and damages) requires strategic planning and execution." – Corporate and M&A 

"Their answers are always reliable and prompt." – Corporate and M&A 

"Lee & Ko is a premier Korean law firm with a well-earned reputation for legal excellence, strategic insight, and client dedication. The firm’s strength lies in its ability to deliver sophisticated, commercially sound advice across a wide range of complex legal issues, particularly in cross-border disputes and international arbitration. One of the most commendable aspects of Lee & Ko is its deep bench of highly skilled professionals who work seamlessly across practice areas. The firm demonstrates a clear understanding of client objectives, and its advice consistently reflects both technical precision and practical judgement." – Dispute resolution 

"Lee & Ko has a deep understanding of trademark law and provides practical, business-orientated advice. Their team is highly responsive, detail-orientated, and reliable in managing both domestic and international trademark matters." – Intellectual property 

"They analysed the technology in detail and reviewed the risks with suggested alternatives." – Intellectual property 

"Lee & Ko is one of the most prestigious law firms in Korea, and its diverse range of expertise enables effective communication among specialists from various fields. This collaboration ensures that clients receive accurate, comprehensive responses in a timely manner." – Intellectual property 

Jeong Yoon Choi 

"Jeongyoon is a highly knowledgeable and reliable expert in Korean competition law. She has a clear ability to analyse complex regulatory issues and translate them into practical, business-orientated advice. Her communication is always precise, timely, and solution-focused, which makes her an effective partner in both advisory and contentious matters. Her calm and thoughtful approach builds trust with clients, and her deep understanding of KFTC practice adds significant value to strategic decision-making." 

Byong Ki Chung 

"He demonstrates exceptional legal expertise and thorough understanding of complex issues. He is highly responsive and communicates clearly, ensuring that clients are always well-informed. His practical approach and attention to detail enable him to deliver effective solutions tailored to the client’s needs. Additionally, his professionalism and dedication build strong trust and confidence in his work." 

Sanghoon Han 

"Sanghoon is a highly capable and practical lawyer, particularly skilled in navigating complex construction disputes. What sets him apart is not just his deep knowledge of international arbitration and construction law but also the clarity and focus he brings to fast-moving, high-stakes matters. He has a unique ability to break down technically and legally complex issues into clear, manageable strategies – always keeping the big picture in mind while paying close attention to detail. In our experience, Sanghoon is exceptionally responsive. He’s consistently available, quick to grasp evolving issues, and solution-orientated in a way that gives clients real confidence. Even under tight deadlines or with complicated procedural developments, he remains calm, clear-headed, and constructive. Equally important, he’s a pleasure to work with. His collaborative and down-to-earth style makes it easy to align quickly on strategy, even across jurisdictions and teams. That combination of legal acumen, responsiveness, and approachable professionalism is rare – and extremely valuable in high-stakes cross-border matters." 

Jang Hyun Ka 

"He has been serving as the main handler in the current KFTC investigation, providing highly proactive and hands-on advice. Despite the fast-moving and urgent nature of the situation, he has responded swiftly and delivered effective, well-calibrated counsel based on his extensive experience." 

"He excels in communication with clients and responds quickly and proactively." 

Ji Yeon Kim 

"She does a thorough fact investigation and strategic case management." 

“She successfully completes the given mission with positive thinking and unyielding will.” 

Jaewoo Kwak 

"Jaewoo provides prompt and clear advice on trademark matters. He is professional, attentive to detail, and offers practical solutions tailored to our business needs." 

"He responds positively to new questions without panicking." 

"Jaewoo is the type of person you enjoy working with, both professionally and personally. He has been instrumental in applying his expertise in intellectual property across various fields. His exceptional knowledge and dedication have earned him the distinction of being named Attorney of the Year in Korea for consecutive years." 

In Seon Lee 

"He is aggressive, professional, and kind." 

Miji Lee 

"With over 20 years of experience in the field of competition law, her deep knowledge and practical expertise have been an invaluable asset to our company. Her extensive understanding of both legal regulations and industry practices allowed her to provide advice that was not only legally sound but also highly relevant to the realities of our business operations. Her ability to anticipate potential regulatory risks and suggest proactive, practical solutions helped us navigate complex situations with confidence. Her insights into subcontracting regulations, fair trade practices, and competition compliance significantly contributed to strengthening our internal systems and decision-making processes. Thanks to her guidance, we were able to manage sensitive business matters more effectively and minimise legal exposure in critical areas." 

Hyun Ah Song 

"She always provides positive speech and friendly answers." 

Jeong-Ho Sun 

"He understands even the most complex issues very well from the company’s perspective and always provides the best advice, which is why we keep turning to him. He has particularly strong insights into fair trade matters and is highly regarded in other areas of laws and regulations as well." 

"He has great expertise, is easy to communicate with, and has great relationships." 

"He has good communication with clients and expertise in competition law." 

Yulchon secures its place in the ‘Outstanding’ band for competition, dispute resolution, M&A, private equity and tax this year. Its famed dispute resolution practice has more than 250 professionals and keeps apace with an evolving market, creating new disputes practice areas that are novel and innovative.  

The firm has strategically bolstered its team through key hires across various practice areas. The competition/antitrust practice has been particularly active in recruitment, welcoming Genny S Kim from Jipyong as a partner. However, the practice also saw the departures of Hyo Sung Kim in June 2024. 

The dispute resolution practice underwent substantial growth, welcoming three new partners including Jinsub Kim from Samsung C&T legal team dispute resolution TF, Shi Won Lee from a role as Secretary to the President for Public Office Discipline, and Jae Hwan Shin from National Court Administration. Two partners departed – Rak Hyun Kim to SK Group and Jae Eok Park. 

In the tax practice, Yulchon made strategic hires including Kwang Lae Cho from the Tax Tribunal, Jung Wook Jun from Samsung Life Insurance, and Se Bin Lee from Supreme Court of Korea. 

Work highlights 

Represented DL E&C as defendant in the lawsuit brought by a housing developer to enjoin demolition and seek damages related to an abandoned 15-year-old capital-area housing project. This case is significant because it clarified the proper allocation of completion risk and payment responsibility between developer and contractor in long-stalled developments and triggered a public discourse about the legal consequences of developer-side defaults. 

Represented HDC Hyundai Development Company in a lawsuit to revoke the imposition of penalty points on a controversial housing development site in Gwangju, Korea. 

Key clients 

Daewoo Engineering & Construction, Mooyoung Construction Management, Samsung C&T Corporation 

Client feedback 

"They are professional." – Competition/antitrust 

"The law firm offers accurate, tailored advice for business and timely communication. They are responsive, detail-orientated, and excellent at collaboration." – Competition/antitrust 

"They are professional, high quality, and timely." – Corporate and M&A 

"Excellent expertise, great team, deep market understanding, outstanding individuals." – Dispute resolution 

"Kim & Chang provided solutions based on its accumulated experience and professional legal expertise, after thoroughly considering the client’s needs. It makes full use of internal resources and strives to achieve the best possible outcome. What is particularly impressive is that they do not merely respond to questions but proactively think from the client’s perspective to identify effective solutions." – Dispute resolution 

"The strongest attribute of Kim & Chang is they have experienced consultants from each industry, former government officers, and specialised lawyers by subject." – Dispute resolution 

"Kim & Chang is the largest law firm in South Korea, and their network to gain relevant information and manage relevant stakeholders is strong enough to guarantee a positive outcome." – Dispute resolution 

"Among all law firms, Kim & Chang stands out for its unmatched expertise and extensive track record in corporate governance restructuring matters – particularly those involving the formation of holding companies and the conversion of branches into subsidiaries in Korea. With a deep bench of seasoned experts and proven know-how, the law firm consistently earned our trust as a reliable partner for such critical mandates." – Insurance 

"Kim & Chang boasts a diverse team of top-tier experts across various fields and is exceptionally efficient in handling matters. For instance, in a recent advisory case that required the opinion of an actuary, other law firms were unable to provide timely support due to the lack of in-house actuarial professionals. In contrast, Kim & Chang was able to deliver the necessary opinion swiftly, as it has its own in-house actuary." – Insurance  

"Kim & Chang is consistently hands-on throughout every stage of the process, demonstrating a deep commitment to understanding our specific needs. They offer practical, actionable advice that is tailored to real-world applications, helping us navigate complex legal challenges with confidence. Additionally, they provide a comprehensive understanding of the issues at hand, ensuring that we see the full picture and potential implications before making any decisions. This thorough approach enables us to make informed choices and effectively manage risks." – Labour and employment 

"I believe they are one of the very few law firms capable of providing detailed insights into their experiences, including enforcement trends observed from regulatory authorities. They approached the case with passion and a proactive mindset." – Regulatory 

"Kim & Chang is highly competent technically but also adopts a very practical approach towards conflict resolution. They are able to help manage the tax office very well and keep them focused on the key issues for resolution." – Tax 

"Kim & Chang is by far the most technically advanced advisors I have worked with in South Korea. Apart from being technically strong in all tax-related matters and constantly updating themselves on the changing regulations in the jurisdiction, they also take the time and effort to educate me on various initiatives that would be of benefit for my organisation. They are diligent, they are hard-working, and they provide exemplary service on a daily basis." – Tax 

Jongwon Jeon 

"Very professional, smart and knowledgeable on subject matter." 

"He is very actively collaborating with clients and contactable any time when I need to talk with him. He has a good insight into the legal system and business nature, especially in the medical device, pharmaceutical and healthcare service space, and he is good at designing a solution for a legal case from the beginning to the end." 

"His strength lies in his ability to evaluate the broad implications of a case through thorough risk analysis, while also offering rapid legal consultation for key decisions. He’s highly engaged in his work and always considers what’s best for the client. He is committed to leveraging the law firm’s internal resources to maximise client value." 

"First of all, he is super-professional and has a strong sense of responsibility. He works very hard and always gives us a clear response and action whenever we share any input. He's also knowledgeable enough to manage any legal issues of the alcohol industry. His professional management of a client and a case makes us feel comfortable about the positive outcome." 

"I've been working with him for several years on various matters, including audits, corporate governance, competition law, and litigation. He is a highly dedicated professional who consistently demonstrates exceptional analytical and problem-solving skills, and he exercises excellent judgement when providing legal advice. He has provided clear and practical guidance." 

"Mr. Jeon is consistently hands-on throughout every stage of the process, demonstrating a deep commitment to understanding our specific needs. He is very responsive and deeply cares about his clients, ensuring clear and timely communication at all times. Mr. Jeon offers practical, actionable advice tailored to real-world applications, helping us navigate complex legal challenges with confidence. Additionally, he provides a comprehensive understanding of the issues at hand, ensuring that we see the full picture and potential implications before making any decisions. This thorough approach enables us to make informed choices and effectively manage risks." 

Byung-Wha Kim 

"He provided professional and practical advice in the field of antitrust law." 

Chanik Park 

"He is professional." 

Hyun Wook Shin 

"Based on his extensive experience in corporate advisory, he does not offer abstract or surface-level solutions. Instead, he consistently strives to understand issues from the company's perspective and provide practical, tailored legal guidance." 

"He possesses top-tier expertise in the insurance sector, accurately identifies clients’ issues, and provides clear and effective solutions." 

 Kenny Sung 

"Kenny is very knowledgeable and practical. I have only good things to say about Kenny. He has helped us through a number of tax audits and other tax issues in South Korea. He's always been able to give practical solutions that make a difference. More importantly, he's always helped us obtain a good result."  

"Kenny is the primary contact at Kim & Chang and is the liaison between us and the broader Kim & Chang organisation. Over the past five years, Kenny has provided the most incredible service that I am still recommending him to other colleagues of mine in other organisations. He is hard-working, diligent, technically advanced, and provides excellent customer support daily. He is an exceptional leader, and I can see how he brings up other team members in our interactions to provide them with the opportunity to learn and advance in their careers." 

"Active and productive communication with HQ counterparts and NTS with strong knowledge in a gentle manner." 

Michael Yu 

"Excellent advisor, great communicator, very structured, reliable, understands clients' needs." 

Work highlights 

Represented SK Group as acquirer in the merger of SK E&S and SK Innovation, the two largest energy-sector companies in Korea, to create SK Innovation E&S, the largest private integrated energy company in the Asia-Pacific region. 

Represented MBK Partners as buyer and Blackstone as seller in the purchase and sale of a majority stake in Geo-Young, the leading wholesale distributor of pharmaceutical and medical device products in Korea. 

Key clients 

eBay, Korea Southern Power, Uber 

An undisputed premier firm, Lee & Ko holds steady in the rankings as a fool-proof choice for its impressive roster of offshore and onshore clients. Its renowned finance practice wins plaudits from peers and clients that acknowledge its frequent role in representing lenders. The firm was elevated this year into the ‘Outstanding’ tiers for labour and employment and real estate. Lee & Ko’s traditional dominance in debt capital markets helped it maintain a steady flow of debt deals. Managing partner Yong Seok Ahn is recognised for his corporate and competition expertise.  

The firm has continued to evolve its practice areas through strategic hiring and internal changes. In the dispute resolution sector, Lee & Ko strengthened its team with key hires, including partners Young Su Kang, Tai Han Ha and Eun Pyo Hong in March 2025, and Eun Young Park in October 2024. The competition practice was bolstered by the addition of senior advisor Moo Jin Choi from the Korea Fair Trade Commission in March 2025. 

The firm has bolstered its intellectual property practice with a key partner-level hires in the past year. Hankil D. Kang joined the firm as a partner in May 2024, from Bae, Kim & Lee. These strategic appointments underscore Lee & Ko's commitment to expanding its IP capabilities, particularly in healthcare-related fields. 

Client feedback 

"At Lee & Ko, they demonstrated a clear and thorough understanding of our business and its unique characteristics. Rather than providing general legal advice, they offered precise, tailored answers that addressed the specific issues we faced. Moreover, they provided clear and practical guidance on how to resolve those issues effectively, helping us make well-informed decisions at each stage. Their ability to grasp the core of our business and deliver relevant, actionable solutions was especially valuable." – Competition/antitrust 

"Lee & Ko actively seeks to understand the company's business areas and provides effective solutions based on this understanding." – Competition/antitrust 

"They are professional and excellent." – Competition/antitrust 

"Lee & Ko demonstrates strong expertise across a wide range of regulatory and compliance matters, particularly in complex areas such as competition law and corporate investigations. 
The firm is known for its depth of legal analysis, clear strategic advice, and ability to provide practical solutions tailored to the client’s business context. Their responsiveness and collaborative approach make them a reliable partner in sensitive and time-pressured situations. Overall, Lee & Ko combines legal excellence with commercial awareness, which makes their counsel both actionable and effective." – Competition/antitrust 

"They have top-tier experts and professional legal support." – Competition/antitrust 

"Lee & Ko conducted a thorough review with a high level of expertise and presented various alternatives." – Competition/antitrust  

"Lee & Ko combines deep legal expertise with a strong understanding of the Korean regulatory and business landscape. The firm is highly responsive and practical and consistently delivers high-quality advice across complex matters. Their client-focused approach and professionalism make them a trusted partner in both domestic and cross-border issues." – Competition/antitrust 

"They have great expertise and are easy to communicate with." – Competition/antitrust 

"The law firm holds business-specific professional expertise." – Competition/antitrust 

"As OK Financial Group was recently designated as a large business group by the KFTC, it is undergoing its first investigation by the KFTC. In this unfamiliar situation, Lee & Ko has been providing proactive and effective support in responding to the investigation. Moreover, they have been offering practical advice to help mitigate future risks related to fair trade compliance." – Competition/antitrust 

"Lee & Ko demonstrated exceptional diligence in investigating the factual basis of our case. Their thorough approach to fact-finding appears to have been a critical factor in the successful outcome of the litigation. Effective legal representation in damages lawsuits requires a comprehensive understanding of all relevant circumstances, and Lee & Ko excelled in this aspect of their service. The firm appears to have developed and executed an effective litigation strategy based on their thorough fact investigation. In damages lawsuits, establishing or refuting the elements of liability (duty, breach, causation and damages) requires strategic planning and execution." – Corporate and M&A 

"Their answers are always reliable and prompt." – Corporate and M&A 

"Lee & Ko is a premier Korean law firm with a well-earned reputation for legal excellence, strategic insight, and client dedication. The firm’s strength lies in its ability to deliver sophisticated, commercially sound advice across a wide range of complex legal issues, particularly in cross-border disputes and international arbitration. One of the most commendable aspects of Lee & Ko is its deep bench of highly skilled professionals who work seamlessly across practice areas. The firm demonstrates a clear understanding of client objectives, and its advice consistently reflects both technical precision and practical judgement." – Dispute resolution 

"Lee & Ko has a deep understanding of trademark law and provides practical, business-orientated advice. Their team is highly responsive, detail-orientated, and reliable in managing both domestic and international trademark matters." – Intellectual property 

"They analysed the technology in detail and reviewed the risks with suggested alternatives." – Intellectual property 

"Lee & Ko is one of the most prestigious law firms in Korea, and its diverse range of expertise enables effective communication among specialists from various fields. This collaboration ensures that clients receive accurate, comprehensive responses in a timely manner." – Intellectual property 

Jeong Yoon Choi 

"Jeongyoon is a highly knowledgeable and reliable expert in Korean competition law. She has a clear ability to analyse complex regulatory issues and translate them into practical, business-orientated advice. Her communication is always precise, timely, and solution-focused, which makes her an effective partner in both advisory and contentious matters. Her calm and thoughtful approach builds trust with clients, and her deep understanding of KFTC practice adds significant value to strategic decision-making." 

Byong Ki Chung 

"He demonstrates exceptional legal expertise and thorough understanding of complex issues. He is highly responsive and communicates clearly, ensuring that clients are always well-informed. His practical approach and attention to detail enable him to deliver effective solutions tailored to the client’s needs. Additionally, his professionalism and dedication build strong trust and confidence in his work." 

Sanghoon Han 

"Sanghoon is a highly capable and practical lawyer, particularly skilled in navigating complex construction disputes. What sets him apart is not just his deep knowledge of international arbitration and construction law but also the clarity and focus he brings to fast-moving, high-stakes matters. He has a unique ability to break down technically and legally complex issues into clear, manageable strategies – always keeping the big picture in mind while paying close attention to detail. In our experience, Sanghoon is exceptionally responsive. He’s consistently available, quick to grasp evolving issues, and solution-orientated in a way that gives clients real confidence. Even under tight deadlines or with complicated procedural developments, he remains calm, clear-headed, and constructive. Equally important, he’s a pleasure to work with. His collaborative and down-to-earth style makes it easy to align quickly on strategy, even across jurisdictions and teams. That combination of legal acumen, responsiveness, and approachable professionalism is rare – and extremely valuable in high-stakes cross-border matters." 

Jang Hyun Ka 

"He has been serving as the main handler in the current KFTC investigation, providing highly proactive and hands-on advice. Despite the fast-moving and urgent nature of the situation, he has responded swiftly and delivered effective, well-calibrated counsel based on his extensive experience." 

"He excels in communication with clients and responds quickly and proactively." 

Ji Yeon Kim 

"She does a thorough fact investigation and strategic case management." 

“She successfully completes the given mission with positive thinking and unyielding will.” 

Jaewoo Kwak 

"Jaewoo provides prompt and clear advice on trademark matters. He is professional, attentive to detail, and offers practical solutions tailored to our business needs." 

"He responds positively to new questions without panicking." 

"Jaewoo is the type of person you enjoy working with, both professionally and personally. He has been instrumental in applying his expertise in intellectual property across various fields. His exceptional knowledge and dedication have earned him the distinction of being named Attorney of the Year in Korea for consecutive years." 

In Seon Lee 

"He is aggressive, professional, and kind." 

Miji Lee 

"With over 20 years of experience in the field of competition law, her deep knowledge and practical expertise have been an invaluable asset to our company. Her extensive understanding of both legal regulations and industry practices allowed her to provide advice that was not only legally sound but also highly relevant to the realities of our business operations. Her ability to anticipate potential regulatory risks and suggest proactive, practical solutions helped us navigate complex situations with confidence. Her insights into subcontracting regulations, fair trade practices, and competition compliance significantly contributed to strengthening our internal systems and decision-making processes. Thanks to her guidance, we were able to manage sensitive business matters more effectively and minimise legal exposure in critical areas." 

Hyun Ah Song 

"She always provides positive speech and friendly answers." 

Jeong-Ho Sun 

"He understands even the most complex issues very well from the company’s perspective and always provides the best advice, which is why we keep turning to him. He has particularly strong insights into fair trade matters and is highly regarded in other areas of laws and regulations as well." 

"He has great expertise, is easy to communicate with, and has great relationships." 

"He has good communication with clients and expertise in competition law." 

Work highlights 

Represented Air Incheon as buyer in the acquisition of Asiana Airlines’ entire cargo business from Korean Air Lines – a divestiture mandated by the European Commission and Japan Fair Trade Commission as a condition for approving the Korean Air-Asiana merger – guiding Air Incheon from preferred-bidder selection through the unprecedented re-licensing of all route and operating permits across the US, China, Hong Kong, Germany, Austria, Italy, Belgium, Kazakhstan, the UK and Thailand, while satisfying EU Commission purchaser-approval and monitoring-trustee requirements. 

Represented Macquarie Korea Infrastructure Fund as buyer in the first-ever institutional acquisition of a Korean data centre, purchasing 100% of Hanam Data Center through its SPV Green Digital Infra, and navigating complex construction succession, cybersecurity and data-protection compliance to close the precedent-setting transaction. 

Key clients 

Koramco Asset Management, Rifa Asset Management 

Work highlights 

Advised Korea Aerospace Industries in its acquisition of management control over Geneco through the strategic purchase of a controlling share, providing comprehensive legal guidance through the entire transaction. 

Advised Superb AI, a SaaS-based vision AI company, in securing W49 billion ($35 million) Series C funding. 

Key clients 

FuriosaAI, FuturePlay, Mirae Asset Venture Investment 

Client feedback 

"They are professional." – Competition/antitrust 

"The law firm offers accurate, tailored advice for business and timely communication. They are responsive, detail-orientated, and excellent at collaboration." – Competition/antitrust 

"They are professional, high quality, and timely." – Corporate and M&A 

"Excellent expertise, great team, deep market understanding, outstanding individuals." – Dispute resolution 

"Kim & Chang provided solutions based on its accumulated experience and professional legal expertise, after thoroughly considering the client’s needs. It makes full use of internal resources and strives to achieve the best possible outcome. What is particularly impressive is that they do not merely respond to questions but proactively think from the client’s perspective to identify effective solutions." – Dispute resolution 

"The strongest attribute of Kim & Chang is they have experienced consultants from each industry, former government officers, and specialised lawyers by subject." – Dispute resolution 

"Kim & Chang is the largest law firm in South Korea, and their network to gain relevant information and manage relevant stakeholders is strong enough to guarantee a positive outcome." – Dispute resolution 

"Among all law firms, Kim & Chang stands out for its unmatched expertise and extensive track record in corporate governance restructuring matters – particularly those involving the formation of holding companies and the conversion of branches into subsidiaries in Korea. With a deep bench of seasoned experts and proven know-how, the law firm consistently earned our trust as a reliable partner for such critical mandates." – Insurance 

"Kim & Chang boasts a diverse team of top-tier experts across various fields and is exceptionally efficient in handling matters. For instance, in a recent advisory case that required the opinion of an actuary, other law firms were unable to provide timely support due to the lack of in-house actuarial professionals. In contrast, Kim & Chang was able to deliver the necessary opinion swiftly, as it has its own in-house actuary." – Insurance  

"Kim & Chang is consistently hands-on throughout every stage of the process, demonstrating a deep commitment to understanding our specific needs. They offer practical, actionable advice that is tailored to real-world applications, helping us navigate complex legal challenges with confidence. Additionally, they provide a comprehensive understanding of the issues at hand, ensuring that we see the full picture and potential implications before making any decisions. This thorough approach enables us to make informed choices and effectively manage risks." – Labour and employment 

"I believe they are one of the very few law firms capable of providing detailed insights into their experiences, including enforcement trends observed from regulatory authorities. They approached the case with passion and a proactive mindset." – Regulatory 

"Kim & Chang is highly competent technically but also adopts a very practical approach towards conflict resolution. They are able to help manage the tax office very well and keep them focused on the key issues for resolution." – Tax 

"Kim & Chang is by far the most technically advanced advisors I have worked with in South Korea. Apart from being technically strong in all tax-related matters and constantly updating themselves on the changing regulations in the jurisdiction, they also take the time and effort to educate me on various initiatives that would be of benefit for my organisation. They are diligent, they are hard-working, and they provide exemplary service on a daily basis." – Tax 

Jongwon Jeon 

"Very professional, smart and knowledgeable on subject matter." 

"He is very actively collaborating with clients and contactable any time when I need to talk with him. He has a good insight into the legal system and business nature, especially in the medical device, pharmaceutical and healthcare service space, and he is good at designing a solution for a legal case from the beginning to the end." 

"His strength lies in his ability to evaluate the broad implications of a case through thorough risk analysis, while also offering rapid legal consultation for key decisions. He’s highly engaged in his work and always considers what’s best for the client. He is committed to leveraging the law firm’s internal resources to maximise client value." 

"First of all, he is super-professional and has a strong sense of responsibility. He works very hard and always gives us a clear response and action whenever we share any input. He's also knowledgeable enough to manage any legal issues of the alcohol industry. His professional management of a client and a case makes us feel comfortable about the positive outcome." 

"I've been working with him for several years on various matters, including audits, corporate governance, competition law, and litigation. He is a highly dedicated professional who consistently demonstrates exceptional analytical and problem-solving skills, and he exercises excellent judgement when providing legal advice. He has provided clear and practical guidance." 

"Mr. Jeon is consistently hands-on throughout every stage of the process, demonstrating a deep commitment to understanding our specific needs. He is very responsive and deeply cares about his clients, ensuring clear and timely communication at all times. Mr. Jeon offers practical, actionable advice tailored to real-world applications, helping us navigate complex legal challenges with confidence. Additionally, he provides a comprehensive understanding of the issues at hand, ensuring that we see the full picture and potential implications before making any decisions. This thorough approach enables us to make informed choices and effectively manage risks." 

Byung-Wha Kim 

"He provided professional and practical advice in the field of antitrust law." 

Chanik Park 

"He is professional." 

Hyun Wook Shin 

"Based on his extensive experience in corporate advisory, he does not offer abstract or surface-level solutions. Instead, he consistently strives to understand issues from the company's perspective and provide practical, tailored legal guidance." 

"He possesses top-tier expertise in the insurance sector, accurately identifies clients’ issues, and provides clear and effective solutions." 

 Kenny Sung 

"Kenny is very knowledgeable and practical. I have only good things to say about Kenny. He has helped us through a number of tax audits and other tax issues in South Korea. He's always been able to give practical solutions that make a difference. More importantly, he's always helped us obtain a good result."  

"Kenny is the primary contact at Kim & Chang and is the liaison between us and the broader Kim & Chang organisation. Over the past five years, Kenny has provided the most incredible service that I am still recommending him to other colleagues of mine in other organisations. He is hard-working, diligent, technically advanced, and provides excellent customer support daily. He is an exceptional leader, and I can see how he brings up other team members in our interactions to provide them with the opportunity to learn and advance in their careers." 

"Active and productive communication with HQ counterparts and NTS with strong knowledge in a gentle manner." 

Michael Yu 

"Excellent advisor, great communicator, very structured, reliable, understands clients' needs." 

Work highlights 

Represented Netflix as defendant in the lawsuit brought by Baby Garden and others to enjoin and seek damages related to the Netflix documentary “In the Name of God: A Holy Betrayal”. This case is significant because it affirmed the importance of protecting the freedom of expression and triggered a public discourse about such freedom. This case serves as an important precedent for future disputes related to freedom of expression in the field of documentaries available on over-the-top streaming services, in particular. 

Represented a Korean shipbuilder as respondent in high-stakes London Maritime Arbitrators Association arbitration and parallel Korean litigation brought by owners over novel LNG membrane-tank design defects on vessels developed under the Korean government’s national innovation programme, securing a December 2023 quantum award after a three-week London hearing and continuing settlement efforts. 

Key clients 

Hybe, The International Air Transport Association, Volvo 

An undisputed premier firm, Lee & Ko holds steady in the rankings as a fool-proof choice for its impressive roster of offshore and onshore clients. Its renowned finance practice wins plaudits from peers and clients that acknowledge its frequent role in representing lenders. The firm was elevated this year into the ‘Outstanding’ tiers for labour and employment and real estate. Lee & Ko’s traditional dominance in debt capital markets helped it maintain a steady flow of debt deals. Managing partner Yong Seok Ahn is recognised for his corporate and competition expertise.  

The firm has continued to evolve its practice areas through strategic hiring and internal changes. In the dispute resolution sector, Lee & Ko strengthened its team with key hires, including partners Young Su Kang, Tai Han Ha and Eun Pyo Hong in March 2025, and Eun Young Park in October 2024. The competition practice was bolstered by the addition of senior advisor Moo Jin Choi from the Korea Fair Trade Commission in March 2025. 

The firm has bolstered its intellectual property practice with a key partner-level hires in the past year. Hankil D. Kang joined the firm as a partner in May 2024, from Bae, Kim & Lee. These strategic appointments underscore Lee & Ko's commitment to expanding its IP capabilities, particularly in healthcare-related fields. 

Client feedback 

"At Lee & Ko, they demonstrated a clear and thorough understanding of our business and its unique characteristics. Rather than providing general legal advice, they offered precise, tailored answers that addressed the specific issues we faced. Moreover, they provided clear and practical guidance on how to resolve those issues effectively, helping us make well-informed decisions at each stage. Their ability to grasp the core of our business and deliver relevant, actionable solutions was especially valuable." – Competition/antitrust 

"Lee & Ko actively seeks to understand the company's business areas and provides effective solutions based on this understanding." – Competition/antitrust 

"They are professional and excellent." – Competition/antitrust 

"Lee & Ko demonstrates strong expertise across a wide range of regulatory and compliance matters, particularly in complex areas such as competition law and corporate investigations. 
The firm is known for its depth of legal analysis, clear strategic advice, and ability to provide practical solutions tailored to the client’s business context. Their responsiveness and collaborative approach make them a reliable partner in sensitive and time-pressured situations. Overall, Lee & Ko combines legal excellence with commercial awareness, which makes their counsel both actionable and effective." – Competition/antitrust 

"They have top-tier experts and professional legal support." – Competition/antitrust 

"Lee & Ko conducted a thorough review with a high level of expertise and presented various alternatives." – Competition/antitrust  

"Lee & Ko combines deep legal expertise with a strong understanding of the Korean regulatory and business landscape. The firm is highly responsive and practical and consistently delivers high-quality advice across complex matters. Their client-focused approach and professionalism make them a trusted partner in both domestic and cross-border issues." – Competition/antitrust 

"They have great expertise and are easy to communicate with." – Competition/antitrust 

"The law firm holds business-specific professional expertise." – Competition/antitrust 

"As OK Financial Group was recently designated as a large business group by the KFTC, it is undergoing its first investigation by the KFTC. In this unfamiliar situation, Lee & Ko has been providing proactive and effective support in responding to the investigation. Moreover, they have been offering practical advice to help mitigate future risks related to fair trade compliance." – Competition/antitrust 

"Lee & Ko demonstrated exceptional diligence in investigating the factual basis of our case. Their thorough approach to fact-finding appears to have been a critical factor in the successful outcome of the litigation. Effective legal representation in damages lawsuits requires a comprehensive understanding of all relevant circumstances, and Lee & Ko excelled in this aspect of their service. The firm appears to have developed and executed an effective litigation strategy based on their thorough fact investigation. In damages lawsuits, establishing or refuting the elements of liability (duty, breach, causation and damages) requires strategic planning and execution." – Corporate and M&A 

"Their answers are always reliable and prompt." – Corporate and M&A 

"Lee & Ko is a premier Korean law firm with a well-earned reputation for legal excellence, strategic insight, and client dedication. The firm’s strength lies in its ability to deliver sophisticated, commercially sound advice across a wide range of complex legal issues, particularly in cross-border disputes and international arbitration. One of the most commendable aspects of Lee & Ko is its deep bench of highly skilled professionals who work seamlessly across practice areas. The firm demonstrates a clear understanding of client objectives, and its advice consistently reflects both technical precision and practical judgement." – Dispute resolution 

"Lee & Ko has a deep understanding of trademark law and provides practical, business-orientated advice. Their team is highly responsive, detail-orientated, and reliable in managing both domestic and international trademark matters." – Intellectual property 

"They analysed the technology in detail and reviewed the risks with suggested alternatives." – Intellectual property 

"Lee & Ko is one of the most prestigious law firms in Korea, and its diverse range of expertise enables effective communication among specialists from various fields. This collaboration ensures that clients receive accurate, comprehensive responses in a timely manner." – Intellectual property 

Jeong Yoon Choi 

"Jeongyoon is a highly knowledgeable and reliable expert in Korean competition law. She has a clear ability to analyse complex regulatory issues and translate them into practical, business-orientated advice. Her communication is always precise, timely, and solution-focused, which makes her an effective partner in both advisory and contentious matters. Her calm and thoughtful approach builds trust with clients, and her deep understanding of KFTC practice adds significant value to strategic decision-making." 

Byong Ki Chung 

"He demonstrates exceptional legal expertise and thorough understanding of complex issues. He is highly responsive and communicates clearly, ensuring that clients are always well-informed. His practical approach and attention to detail enable him to deliver effective solutions tailored to the client’s needs. Additionally, his professionalism and dedication build strong trust and confidence in his work." 

Sanghoon Han 

"Sanghoon is a highly capable and practical lawyer, particularly skilled in navigating complex construction disputes. What sets him apart is not just his deep knowledge of international arbitration and construction law but also the clarity and focus he brings to fast-moving, high-stakes matters. He has a unique ability to break down technically and legally complex issues into clear, manageable strategies – always keeping the big picture in mind while paying close attention to detail. In our experience, Sanghoon is exceptionally responsive. He’s consistently available, quick to grasp evolving issues, and solution-orientated in a way that gives clients real confidence. Even under tight deadlines or with complicated procedural developments, he remains calm, clear-headed, and constructive. Equally important, he’s a pleasure to work with. His collaborative and down-to-earth style makes it easy to align quickly on strategy, even across jurisdictions and teams. That combination of legal acumen, responsiveness, and approachable professionalism is rare – and extremely valuable in high-stakes cross-border matters." 

Jang Hyun Ka 

"He has been serving as the main handler in the current KFTC investigation, providing highly proactive and hands-on advice. Despite the fast-moving and urgent nature of the situation, he has responded swiftly and delivered effective, well-calibrated counsel based on his extensive experience." 

"He excels in communication with clients and responds quickly and proactively." 

Ji Yeon Kim 

"She does a thorough fact investigation and strategic case management." 

“She successfully completes the given mission with positive thinking and unyielding will.” 

Jaewoo Kwak 

"Jaewoo provides prompt and clear advice on trademark matters. He is professional, attentive to detail, and offers practical solutions tailored to our business needs." 

"He responds positively to new questions without panicking." 

"Jaewoo is the type of person you enjoy working with, both professionally and personally. He has been instrumental in applying his expertise in intellectual property across various fields. His exceptional knowledge and dedication have earned him the distinction of being named Attorney of the Year in Korea for consecutive years." 

In Seon Lee 

"He is aggressive, professional, and kind." 

Miji Lee 

"With over 20 years of experience in the field of competition law, her deep knowledge and practical expertise have been an invaluable asset to our company. Her extensive understanding of both legal regulations and industry practices allowed her to provide advice that was not only legally sound but also highly relevant to the realities of our business operations. Her ability to anticipate potential regulatory risks and suggest proactive, practical solutions helped us navigate complex situations with confidence. Her insights into subcontracting regulations, fair trade practices, and competition compliance significantly contributed to strengthening our internal systems and decision-making processes. Thanks to her guidance, we were able to manage sensitive business matters more effectively and minimise legal exposure in critical areas." 

Hyun Ah Song 

"She always provides positive speech and friendly answers." 

Jeong-Ho Sun 

"He understands even the most complex issues very well from the company’s perspective and always provides the best advice, which is why we keep turning to him. He has particularly strong insights into fair trade matters and is highly regarded in other areas of laws and regulations as well." 

"He has great expertise, is easy to communicate with, and has great relationships." 

"He has good communication with clients and expertise in competition law." 

Work highlights 

Represented the CEO of SK Chemicals as defendant in the criminal prosecution arising from South Korea’s humidifier-steriliser tragedy, securing a Supreme Court acquittal in December 2024 that reversed the appellate court’s guilty verdict and definitively rejected criminal liability for product-defect injuries. 

Represented Korea Electric Power Corporation and Korea Hydro & Nuclear Power as claimants in the ICC arbitration against Westinghouse Electric Company concerning post-licence restrictions on the export of Korean-designed APR-1400 nuclear reactors, securing a confidential January 2025 settlement that removes all asserted technology-transfer and US export-control barriers and clears the way for Team Korea’s global reactor sales. 

Key clients 

Ilsan Grand Bridge, Korean Airlines, Z Intermediate Global Corporation 

Work highlights 

Represented a syndicate of reinsurers in monitoring and supervising the defence of Korea LNG Tech (KLT) in the W800 million ($0.57 million) KC-1 LNG containment-system defect litigation brought by Samsung Heavy Industries, securing a first-instance dismissal and guiding the ongoing appellate strategy that will shape future liability standards for Korean shipbuilding and energy projects. 

Key clients 

AIG, Fantom Foundation, Supportec 

Yulchon secures its place in the ‘Outstanding’ band for competition, dispute resolution, M&A, private equity and tax this year. Its famed dispute resolution practice has more than 250 professionals and keeps apace with an evolving market, creating new disputes practice areas that are novel and innovative.  

The firm has strategically bolstered its team through key hires across various practice areas. The competition/antitrust practice has been particularly active in recruitment, welcoming Genny S Kim from Jipyong as a partner. However, the practice also saw the departures of Hyo Sung Kim in June 2024. 

The dispute resolution practice underwent substantial growth, welcoming three new partners including Jinsub Kim from Samsung C&T legal team dispute resolution TF, Shi Won Lee from a role as Secretary to the President for Public Office Discipline, and Jae Hwan Shin from National Court Administration. Two partners departed – Rak Hyun Kim to SK Group and Jae Eok Park. 

In the tax practice, Yulchon made strategic hires including Kwang Lae Cho from the Tax Tribunal, Jung Wook Jun from Samsung Life Insurance, and Se Bin Lee from Supreme Court of Korea. 

Work highlights 

Represented Korea Railroad Corporation in a lawsuit brought by Hyundai Development Company-SK E&C Consortium to enjoin and seek damages related to the sharing of approximately W400 billion ($275.3 million) in property-tax obligations for the Yongsan Station Area Urban Development Project. This case established an important legal precedent concerning the sharing of project costs, including property taxes, in large-scale development projects while showcasing Yulchon’s distinguished capabilities. 

Key clients 

Republic of Korea, Samsung C&T Corporation 

Client feedback 

"They are professional." – Competition/antitrust 

"The law firm offers accurate, tailored advice for business and timely communication. They are responsive, detail-orientated, and excellent at collaboration." – Competition/antitrust 

"They are professional, high quality, and timely." – Corporate and M&A 

"Excellent expertise, great team, deep market understanding, outstanding individuals." – Dispute resolution 

"Kim & Chang provided solutions based on its accumulated experience and professional legal expertise, after thoroughly considering the client’s needs. It makes full use of internal resources and strives to achieve the best possible outcome. What is particularly impressive is that they do not merely respond to questions but proactively think from the client’s perspective to identify effective solutions." – Dispute resolution 

"The strongest attribute of Kim & Chang is they have experienced consultants from each industry, former government officers, and specialised lawyers by subject." – Dispute resolution 

"Kim & Chang is the largest law firm in South Korea, and their network to gain relevant information and manage relevant stakeholders is strong enough to guarantee a positive outcome." – Dispute resolution 

"Among all law firms, Kim & Chang stands out for its unmatched expertise and extensive track record in corporate governance restructuring matters – particularly those involving the formation of holding companies and the conversion of branches into subsidiaries in Korea. With a deep bench of seasoned experts and proven know-how, the law firm consistently earned our trust as a reliable partner for such critical mandates." – Insurance 

"Kim & Chang boasts a diverse team of top-tier experts across various fields and is exceptionally efficient in handling matters. For instance, in a recent advisory case that required the opinion of an actuary, other law firms were unable to provide timely support due to the lack of in-house actuarial professionals. In contrast, Kim & Chang was able to deliver the necessary opinion swiftly, as it has its own in-house actuary." – Insurance  

"Kim & Chang is consistently hands-on throughout every stage of the process, demonstrating a deep commitment to understanding our specific needs. They offer practical, actionable advice that is tailored to real-world applications, helping us navigate complex legal challenges with confidence. Additionally, they provide a comprehensive understanding of the issues at hand, ensuring that we see the full picture and potential implications before making any decisions. This thorough approach enables us to make informed choices and effectively manage risks." – Labour and employment 

"I believe they are one of the very few law firms capable of providing detailed insights into their experiences, including enforcement trends observed from regulatory authorities. They approached the case with passion and a proactive mindset." – Regulatory 

"Kim & Chang is highly competent technically but also adopts a very practical approach towards conflict resolution. They are able to help manage the tax office very well and keep them focused on the key issues for resolution." – Tax 

"Kim & Chang is by far the most technically advanced advisors I have worked with in South Korea. Apart from being technically strong in all tax-related matters and constantly updating themselves on the changing regulations in the jurisdiction, they also take the time and effort to educate me on various initiatives that would be of benefit for my organisation. They are diligent, they are hard-working, and they provide exemplary service on a daily basis." – Tax 

Jongwon Jeon 

"Very professional, smart and knowledgeable on subject matter." 

"He is very actively collaborating with clients and contactable any time when I need to talk with him. He has a good insight into the legal system and business nature, especially in the medical device, pharmaceutical and healthcare service space, and he is good at designing a solution for a legal case from the beginning to the end." 

"His strength lies in his ability to evaluate the broad implications of a case through thorough risk analysis, while also offering rapid legal consultation for key decisions. He’s highly engaged in his work and always considers what’s best for the client. He is committed to leveraging the law firm’s internal resources to maximise client value." 

"First of all, he is super-professional and has a strong sense of responsibility. He works very hard and always gives us a clear response and action whenever we share any input. He's also knowledgeable enough to manage any legal issues of the alcohol industry. His professional management of a client and a case makes us feel comfortable about the positive outcome." 

"I've been working with him for several years on various matters, including audits, corporate governance, competition law, and litigation. He is a highly dedicated professional who consistently demonstrates exceptional analytical and problem-solving skills, and he exercises excellent judgement when providing legal advice. He has provided clear and practical guidance." 

"Mr. Jeon is consistently hands-on throughout every stage of the process, demonstrating a deep commitment to understanding our specific needs. He is very responsive and deeply cares about his clients, ensuring clear and timely communication at all times. Mr. Jeon offers practical, actionable advice tailored to real-world applications, helping us navigate complex legal challenges with confidence. Additionally, he provides a comprehensive understanding of the issues at hand, ensuring that we see the full picture and potential implications before making any decisions. This thorough approach enables us to make informed choices and effectively manage risks." 

Byung-Wha Kim 

"He provided professional and practical advice in the field of antitrust law." 

Chanik Park 

"He is professional." 

Hyun Wook Shin 

"Based on his extensive experience in corporate advisory, he does not offer abstract or surface-level solutions. Instead, he consistently strives to understand issues from the company's perspective and provide practical, tailored legal guidance." 

"He possesses top-tier expertise in the insurance sector, accurately identifies clients’ issues, and provides clear and effective solutions." 

 Kenny Sung 

"Kenny is very knowledgeable and practical. I have only good things to say about Kenny. He has helped us through a number of tax audits and other tax issues in South Korea. He's always been able to give practical solutions that make a difference. More importantly, he's always helped us obtain a good result."  

"Kenny is the primary contact at Kim & Chang and is the liaison between us and the broader Kim & Chang organisation. Over the past five years, Kenny has provided the most incredible service that I am still recommending him to other colleagues of mine in other organisations. He is hard-working, diligent, technically advanced, and provides excellent customer support daily. He is an exceptional leader, and I can see how he brings up other team members in our interactions to provide them with the opportunity to learn and advance in their careers." 

"Active and productive communication with HQ counterparts and NTS with strong knowledge in a gentle manner." 

Michael Yu 

"Excellent advisor, great communicator, very structured, reliable, understands clients' needs." 

An undisputed premier firm, Lee & Ko holds steady in the rankings as a fool-proof choice for its impressive roster of offshore and onshore clients. Its renowned finance practice wins plaudits from peers and clients that acknowledge its frequent role in representing lenders. The firm was elevated this year into the ‘Outstanding’ tiers for labour and employment and real estate. Lee & Ko’s traditional dominance in debt capital markets helped it maintain a steady flow of debt deals. Managing partner Yong Seok Ahn is recognised for his corporate and competition expertise.  

The firm has continued to evolve its practice areas through strategic hiring and internal changes. In the dispute resolution sector, Lee & Ko strengthened its team with key hires, including partners Young Su Kang, Tai Han Ha and Eun Pyo Hong in March 2025, and Eun Young Park in October 2024. The competition practice was bolstered by the addition of senior advisor Moo Jin Choi from the Korea Fair Trade Commission in March 2025. 

The firm has bolstered its intellectual property practice with a key partner-level hires in the past year. Hankil D. Kang joined the firm as a partner in May 2024, from Bae, Kim & Lee. These strategic appointments underscore Lee & Ko's commitment to expanding its IP capabilities, particularly in healthcare-related fields. 

Client feedback 

"At Lee & Ko, they demonstrated a clear and thorough understanding of our business and its unique characteristics. Rather than providing general legal advice, they offered precise, tailored answers that addressed the specific issues we faced. Moreover, they provided clear and practical guidance on how to resolve those issues effectively, helping us make well-informed decisions at each stage. Their ability to grasp the core of our business and deliver relevant, actionable solutions was especially valuable." – Competition/antitrust 

"Lee & Ko actively seeks to understand the company's business areas and provides effective solutions based on this understanding." – Competition/antitrust 

"They are professional and excellent." – Competition/antitrust 

"Lee & Ko demonstrates strong expertise across a wide range of regulatory and compliance matters, particularly in complex areas such as competition law and corporate investigations. 
The firm is known for its depth of legal analysis, clear strategic advice, and ability to provide practical solutions tailored to the client’s business context. Their responsiveness and collaborative approach make them a reliable partner in sensitive and time-pressured situations. Overall, Lee & Ko combines legal excellence with commercial awareness, which makes their counsel both actionable and effective." – Competition/antitrust 

"They have top-tier experts and professional legal support." – Competition/antitrust 

"Lee & Ko conducted a thorough review with a high level of expertise and presented various alternatives." – Competition/antitrust  

"Lee & Ko combines deep legal expertise with a strong understanding of the Korean regulatory and business landscape. The firm is highly responsive and practical and consistently delivers high-quality advice across complex matters. Their client-focused approach and professionalism make them a trusted partner in both domestic and cross-border issues." – Competition/antitrust 

"They have great expertise and are easy to communicate with." – Competition/antitrust 

"The law firm holds business-specific professional expertise." – Competition/antitrust 

"As OK Financial Group was recently designated as a large business group by the KFTC, it is undergoing its first investigation by the KFTC. In this unfamiliar situation, Lee & Ko has been providing proactive and effective support in responding to the investigation. Moreover, they have been offering practical advice to help mitigate future risks related to fair trade compliance." – Competition/antitrust 

"Lee & Ko demonstrated exceptional diligence in investigating the factual basis of our case. Their thorough approach to fact-finding appears to have been a critical factor in the successful outcome of the litigation. Effective legal representation in damages lawsuits requires a comprehensive understanding of all relevant circumstances, and Lee & Ko excelled in this aspect of their service. The firm appears to have developed and executed an effective litigation strategy based on their thorough fact investigation. In damages lawsuits, establishing or refuting the elements of liability (duty, breach, causation and damages) requires strategic planning and execution." – Corporate and M&A 

"Their answers are always reliable and prompt." – Corporate and M&A 

"Lee & Ko is a premier Korean law firm with a well-earned reputation for legal excellence, strategic insight, and client dedication. The firm’s strength lies in its ability to deliver sophisticated, commercially sound advice across a wide range of complex legal issues, particularly in cross-border disputes and international arbitration. One of the most commendable aspects of Lee & Ko is its deep bench of highly skilled professionals who work seamlessly across practice areas. The firm demonstrates a clear understanding of client objectives, and its advice consistently reflects both technical precision and practical judgement." – Dispute resolution 

"Lee & Ko has a deep understanding of trademark law and provides practical, business-orientated advice. Their team is highly responsive, detail-orientated, and reliable in managing both domestic and international trademark matters." – Intellectual property 

"They analysed the technology in detail and reviewed the risks with suggested alternatives." – Intellectual property 

"Lee & Ko is one of the most prestigious law firms in Korea, and its diverse range of expertise enables effective communication among specialists from various fields. This collaboration ensures that clients receive accurate, comprehensive responses in a timely manner." – Intellectual property 

Jeong Yoon Choi 

"Jeongyoon is a highly knowledgeable and reliable expert in Korean competition law. She has a clear ability to analyse complex regulatory issues and translate them into practical, business-orientated advice. Her communication is always precise, timely, and solution-focused, which makes her an effective partner in both advisory and contentious matters. Her calm and thoughtful approach builds trust with clients, and her deep understanding of KFTC practice adds significant value to strategic decision-making." 

Byong Ki Chung 

"He demonstrates exceptional legal expertise and thorough understanding of complex issues. He is highly responsive and communicates clearly, ensuring that clients are always well-informed. His practical approach and attention to detail enable him to deliver effective solutions tailored to the client’s needs. Additionally, his professionalism and dedication build strong trust and confidence in his work." 

Sanghoon Han 

"Sanghoon is a highly capable and practical lawyer, particularly skilled in navigating complex construction disputes. What sets him apart is not just his deep knowledge of international arbitration and construction law but also the clarity and focus he brings to fast-moving, high-stakes matters. He has a unique ability to break down technically and legally complex issues into clear, manageable strategies – always keeping the big picture in mind while paying close attention to detail. In our experience, Sanghoon is exceptionally responsive. He’s consistently available, quick to grasp evolving issues, and solution-orientated in a way that gives clients real confidence. Even under tight deadlines or with complicated procedural developments, he remains calm, clear-headed, and constructive. Equally important, he’s a pleasure to work with. His collaborative and down-to-earth style makes it easy to align quickly on strategy, even across jurisdictions and teams. That combination of legal acumen, responsiveness, and approachable professionalism is rare – and extremely valuable in high-stakes cross-border matters." 

Jang Hyun Ka 

"He has been serving as the main handler in the current KFTC investigation, providing highly proactive and hands-on advice. Despite the fast-moving and urgent nature of the situation, he has responded swiftly and delivered effective, well-calibrated counsel based on his extensive experience." 

"He excels in communication with clients and responds quickly and proactively." 

Ji Yeon Kim 

"She does a thorough fact investigation and strategic case management." 

“She successfully completes the given mission with positive thinking and unyielding will.” 

Jaewoo Kwak 

"Jaewoo provides prompt and clear advice on trademark matters. He is professional, attentive to detail, and offers practical solutions tailored to our business needs." 

"He responds positively to new questions without panicking." 

"Jaewoo is the type of person you enjoy working with, both professionally and personally. He has been instrumental in applying his expertise in intellectual property across various fields. His exceptional knowledge and dedication have earned him the distinction of being named Attorney of the Year in Korea for consecutive years." 

In Seon Lee 

"He is aggressive, professional, and kind." 

Miji Lee 

"With over 20 years of experience in the field of competition law, her deep knowledge and practical expertise have been an invaluable asset to our company. Her extensive understanding of both legal regulations and industry practices allowed her to provide advice that was not only legally sound but also highly relevant to the realities of our business operations. Her ability to anticipate potential regulatory risks and suggest proactive, practical solutions helped us navigate complex situations with confidence. Her insights into subcontracting regulations, fair trade practices, and competition compliance significantly contributed to strengthening our internal systems and decision-making processes. Thanks to her guidance, we were able to manage sensitive business matters more effectively and minimise legal exposure in critical areas." 

Hyun Ah Song 

"She always provides positive speech and friendly answers." 

Jeong-Ho Sun 

"He understands even the most complex issues very well from the company’s perspective and always provides the best advice, which is why we keep turning to him. He has particularly strong insights into fair trade matters and is highly regarded in other areas of laws and regulations as well." 

"He has great expertise, is easy to communicate with, and has great relationships." 

"He has good communication with clients and expertise in competition law." 

Work highlights 

Represented OCI Company as defendant in the patent-infringement suit brought by Wacker Chemie AG concerning polycrystalline-silicon manufacturing technology, invalidating the asserted patent at the Supreme Court for failure to satisfy the description requirement and setting a key precedent on parameter-invention disclosure standards. 

Represented Tri Chemical Laboratories as patentee in the validity challenge brought by Versum Materials Korea concerning Tri Chemical Laboratories’ hafnium-precursor patent, persuading the IP High Court to uphold the patent’s inventiveness and validity despite an adverse precedent, thereby preserving Tri Chemical Laboratories’ dominant position in the high-k dielectric precursor market. 

Key clients 

Chemtronics, Fuji Electric, LG Chem, SharkNinja 

Client feedback 

"They are professional." – Competition/antitrust 

"The law firm offers accurate, tailored advice for business and timely communication. They are responsive, detail-orientated, and excellent at collaboration." – Competition/antitrust 

"They are professional, high quality, and timely." – Corporate and M&A 

"Excellent expertise, great team, deep market understanding, outstanding individuals." – Dispute resolution 

"Kim & Chang provided solutions based on its accumulated experience and professional legal expertise, after thoroughly considering the client’s needs. It makes full use of internal resources and strives to achieve the best possible outcome. What is particularly impressive is that they do not merely respond to questions but proactively think from the client’s perspective to identify effective solutions." – Dispute resolution 

"The strongest attribute of Kim & Chang is they have experienced consultants from each industry, former government officers, and specialised lawyers by subject." – Dispute resolution 

"Kim & Chang is the largest law firm in South Korea, and their network to gain relevant information and manage relevant stakeholders is strong enough to guarantee a positive outcome." – Dispute resolution 

"Among all law firms, Kim & Chang stands out for its unmatched expertise and extensive track record in corporate governance restructuring matters – particularly those involving the formation of holding companies and the conversion of branches into subsidiaries in Korea. With a deep bench of seasoned experts and proven know-how, the law firm consistently earned our trust as a reliable partner for such critical mandates." – Insurance 

"Kim & Chang boasts a diverse team of top-tier experts across various fields and is exceptionally efficient in handling matters. For instance, in a recent advisory case that required the opinion of an actuary, other law firms were unable to provide timely support due to the lack of in-house actuarial professionals. In contrast, Kim & Chang was able to deliver the necessary opinion swiftly, as it has its own in-house actuary." – Insurance  

"Kim & Chang is consistently hands-on throughout every stage of the process, demonstrating a deep commitment to understanding our specific needs. They offer practical, actionable advice that is tailored to real-world applications, helping us navigate complex legal challenges with confidence. Additionally, they provide a comprehensive understanding of the issues at hand, ensuring that we see the full picture and potential implications before making any decisions. This thorough approach enables us to make informed choices and effectively manage risks." – Labour and employment 

"I believe they are one of the very few law firms capable of providing detailed insights into their experiences, including enforcement trends observed from regulatory authorities. They approached the case with passion and a proactive mindset." – Regulatory 

"Kim & Chang is highly competent technically but also adopts a very practical approach towards conflict resolution. They are able to help manage the tax office very well and keep them focused on the key issues for resolution." – Tax 

"Kim & Chang is by far the most technically advanced advisors I have worked with in South Korea. Apart from being technically strong in all tax-related matters and constantly updating themselves on the changing regulations in the jurisdiction, they also take the time and effort to educate me on various initiatives that would be of benefit for my organisation. They are diligent, they are hard-working, and they provide exemplary service on a daily basis." – Tax 

Jongwon Jeon 

"Very professional, smart and knowledgeable on subject matter." 

"He is very actively collaborating with clients and contactable any time when I need to talk with him. He has a good insight into the legal system and business nature, especially in the medical device, pharmaceutical and healthcare service space, and he is good at designing a solution for a legal case from the beginning to the end." 

"His strength lies in his ability to evaluate the broad implications of a case through thorough risk analysis, while also offering rapid legal consultation for key decisions. He’s highly engaged in his work and always considers what’s best for the client. He is committed to leveraging the law firm’s internal resources to maximise client value." 

"First of all, he is super-professional and has a strong sense of responsibility. He works very hard and always gives us a clear response and action whenever we share any input. He's also knowledgeable enough to manage any legal issues of the alcohol industry. His professional management of a client and a case makes us feel comfortable about the positive outcome." 

"I've been working with him for several years on various matters, including audits, corporate governance, competition law, and litigation. He is a highly dedicated professional who consistently demonstrates exceptional analytical and problem-solving skills, and he exercises excellent judgement when providing legal advice. He has provided clear and practical guidance." 

"Mr. Jeon is consistently hands-on throughout every stage of the process, demonstrating a deep commitment to understanding our specific needs. He is very responsive and deeply cares about his clients, ensuring clear and timely communication at all times. Mr. Jeon offers practical, actionable advice tailored to real-world applications, helping us navigate complex legal challenges with confidence. Additionally, he provides a comprehensive understanding of the issues at hand, ensuring that we see the full picture and potential implications before making any decisions. This thorough approach enables us to make informed choices and effectively manage risks." 

Byung-Wha Kim 

"He provided professional and practical advice in the field of antitrust law." 

Chanik Park 

"He is professional." 

Hyun Wook Shin 

"Based on his extensive experience in corporate advisory, he does not offer abstract or surface-level solutions. Instead, he consistently strives to understand issues from the company's perspective and provide practical, tailored legal guidance." 

"He possesses top-tier expertise in the insurance sector, accurately identifies clients’ issues, and provides clear and effective solutions." 

 Kenny Sung 

"Kenny is very knowledgeable and practical. I have only good things to say about Kenny. He has helped us through a number of tax audits and other tax issues in South Korea. He's always been able to give practical solutions that make a difference. More importantly, he's always helped us obtain a good result."  

"Kenny is the primary contact at Kim & Chang and is the liaison between us and the broader Kim & Chang organisation. Over the past five years, Kenny has provided the most incredible service that I am still recommending him to other colleagues of mine in other organisations. He is hard-working, diligent, technically advanced, and provides excellent customer support daily. He is an exceptional leader, and I can see how he brings up other team members in our interactions to provide them with the opportunity to learn and advance in their careers." 

"Active and productive communication with HQ counterparts and NTS with strong knowledge in a gentle manner." 

Michael Yu 

"Excellent advisor, great communicator, very structured, reliable, understands clients' needs." 

An undisputed premier firm, Lee & Ko holds steady in the rankings as a fool-proof choice for its impressive roster of offshore and onshore clients. Its renowned finance practice wins plaudits from peers and clients that acknowledge its frequent role in representing lenders. The firm was elevated this year into the ‘Outstanding’ tiers for labour and employment and real estate. Lee & Ko’s traditional dominance in debt capital markets helped it maintain a steady flow of debt deals. Managing partner Yong Seok Ahn is recognised for his corporate and competition expertise.  

The firm has continued to evolve its practice areas through strategic hiring and internal changes. In the dispute resolution sector, Lee & Ko strengthened its team with key hires, including partners Young Su Kang, Tai Han Ha and Eun Pyo Hong in March 2025, and Eun Young Park in October 2024. The competition practice was bolstered by the addition of senior advisor Moo Jin Choi from the Korea Fair Trade Commission in March 2025. 

The firm has bolstered its intellectual property practice with a key partner-level hires in the past year. Hankil D. Kang joined the firm as a partner in May 2024, from Bae, Kim & Lee. These strategic appointments underscore Lee & Ko's commitment to expanding its IP capabilities, particularly in healthcare-related fields. 

Client feedback 

"At Lee & Ko, they demonstrated a clear and thorough understanding of our business and its unique characteristics. Rather than providing general legal advice, they offered precise, tailored answers that addressed the specific issues we faced. Moreover, they provided clear and practical guidance on how to resolve those issues effectively, helping us make well-informed decisions at each stage. Their ability to grasp the core of our business and deliver relevant, actionable solutions was especially valuable." – Competition/antitrust 

"Lee & Ko actively seeks to understand the company's business areas and provides effective solutions based on this understanding." – Competition/antitrust 

"They are professional and excellent." – Competition/antitrust 

"Lee & Ko demonstrates strong expertise across a wide range of regulatory and compliance matters, particularly in complex areas such as competition law and corporate investigations. 
The firm is known for its depth of legal analysis, clear strategic advice, and ability to provide practical solutions tailored to the client’s business context. Their responsiveness and collaborative approach make them a reliable partner in sensitive and time-pressured situations. Overall, Lee & Ko combines legal excellence with commercial awareness, which makes their counsel both actionable and effective." – Competition/antitrust 

"They have top-tier experts and professional legal support." – Competition/antitrust 

"Lee & Ko conducted a thorough review with a high level of expertise and presented various alternatives." – Competition/antitrust  

"Lee & Ko combines deep legal expertise with a strong understanding of the Korean regulatory and business landscape. The firm is highly responsive and practical and consistently delivers high-quality advice across complex matters. Their client-focused approach and professionalism make them a trusted partner in both domestic and cross-border issues." – Competition/antitrust 

"They have great expertise and are easy to communicate with." – Competition/antitrust 

"The law firm holds business-specific professional expertise." – Competition/antitrust 

"As OK Financial Group was recently designated as a large business group by the KFTC, it is undergoing its first investigation by the KFTC. In this unfamiliar situation, Lee & Ko has been providing proactive and effective support in responding to the investigation. Moreover, they have been offering practical advice to help mitigate future risks related to fair trade compliance." – Competition/antitrust 

"Lee & Ko demonstrated exceptional diligence in investigating the factual basis of our case. Their thorough approach to fact-finding appears to have been a critical factor in the successful outcome of the litigation. Effective legal representation in damages lawsuits requires a comprehensive understanding of all relevant circumstances, and Lee & Ko excelled in this aspect of their service. The firm appears to have developed and executed an effective litigation strategy based on their thorough fact investigation. In damages lawsuits, establishing or refuting the elements of liability (duty, breach, causation and damages) requires strategic planning and execution." – Corporate and M&A 

"Their answers are always reliable and prompt." – Corporate and M&A 

"Lee & Ko is a premier Korean law firm with a well-earned reputation for legal excellence, strategic insight, and client dedication. The firm’s strength lies in its ability to deliver sophisticated, commercially sound advice across a wide range of complex legal issues, particularly in cross-border disputes and international arbitration. One of the most commendable aspects of Lee & Ko is its deep bench of highly skilled professionals who work seamlessly across practice areas. The firm demonstrates a clear understanding of client objectives, and its advice consistently reflects both technical precision and practical judgement." – Dispute resolution 

"Lee & Ko has a deep understanding of trademark law and provides practical, business-orientated advice. Their team is highly responsive, detail-orientated, and reliable in managing both domestic and international trademark matters." – Intellectual property 

"They analysed the technology in detail and reviewed the risks with suggested alternatives." – Intellectual property 

"Lee & Ko is one of the most prestigious law firms in Korea, and its diverse range of expertise enables effective communication among specialists from various fields. This collaboration ensures that clients receive accurate, comprehensive responses in a timely manner." – Intellectual property 

Jeong Yoon Choi 

"Jeongyoon is a highly knowledgeable and reliable expert in Korean competition law. She has a clear ability to analyse complex regulatory issues and translate them into practical, business-orientated advice. Her communication is always precise, timely, and solution-focused, which makes her an effective partner in both advisory and contentious matters. Her calm and thoughtful approach builds trust with clients, and her deep understanding of KFTC practice adds significant value to strategic decision-making." 

Byong Ki Chung 

"He demonstrates exceptional legal expertise and thorough understanding of complex issues. He is highly responsive and communicates clearly, ensuring that clients are always well-informed. His practical approach and attention to detail enable him to deliver effective solutions tailored to the client’s needs. Additionally, his professionalism and dedication build strong trust and confidence in his work." 

Sanghoon Han 

"Sanghoon is a highly capable and practical lawyer, particularly skilled in navigating complex construction disputes. What sets him apart is not just his deep knowledge of international arbitration and construction law but also the clarity and focus he brings to fast-moving, high-stakes matters. He has a unique ability to break down technically and legally complex issues into clear, manageable strategies – always keeping the big picture in mind while paying close attention to detail. In our experience, Sanghoon is exceptionally responsive. He’s consistently available, quick to grasp evolving issues, and solution-orientated in a way that gives clients real confidence. Even under tight deadlines or with complicated procedural developments, he remains calm, clear-headed, and constructive. Equally important, he’s a pleasure to work with. His collaborative and down-to-earth style makes it easy to align quickly on strategy, even across jurisdictions and teams. That combination of legal acumen, responsiveness, and approachable professionalism is rare – and extremely valuable in high-stakes cross-border matters." 

Jang Hyun Ka 

"He has been serving as the main handler in the current KFTC investigation, providing highly proactive and hands-on advice. Despite the fast-moving and urgent nature of the situation, he has responded swiftly and delivered effective, well-calibrated counsel based on his extensive experience." 

"He excels in communication with clients and responds quickly and proactively." 

Ji Yeon Kim 

"She does a thorough fact investigation and strategic case management." 

“She successfully completes the given mission with positive thinking and unyielding will.” 

Jaewoo Kwak 

"Jaewoo provides prompt and clear advice on trademark matters. He is professional, attentive to detail, and offers practical solutions tailored to our business needs." 

"He responds positively to new questions without panicking." 

"Jaewoo is the type of person you enjoy working with, both professionally and personally. He has been instrumental in applying his expertise in intellectual property across various fields. His exceptional knowledge and dedication have earned him the distinction of being named Attorney of the Year in Korea for consecutive years." 

In Seon Lee 

"He is aggressive, professional, and kind." 

Miji Lee 

"With over 20 years of experience in the field of competition law, her deep knowledge and practical expertise have been an invaluable asset to our company. Her extensive understanding of both legal regulations and industry practices allowed her to provide advice that was not only legally sound but also highly relevant to the realities of our business operations. Her ability to anticipate potential regulatory risks and suggest proactive, practical solutions helped us navigate complex situations with confidence. Her insights into subcontracting regulations, fair trade practices, and competition compliance significantly contributed to strengthening our internal systems and decision-making processes. Thanks to her guidance, we were able to manage sensitive business matters more effectively and minimise legal exposure in critical areas." 

Hyun Ah Song 

"She always provides positive speech and friendly answers." 

Jeong-Ho Sun 

"He understands even the most complex issues very well from the company’s perspective and always provides the best advice, which is why we keep turning to him. He has particularly strong insights into fair trade matters and is highly regarded in other areas of laws and regulations as well." 

"He has great expertise, is easy to communicate with, and has great relationships." 

"He has good communication with clients and expertise in competition law." 

Client feedback 

"They are professional." – Competition/antitrust 

"The law firm offers accurate, tailored advice for business and timely communication. They are responsive, detail-orientated, and excellent at collaboration." – Competition/antitrust 

"They are professional, high quality, and timely." – Corporate and M&A 

"Excellent expertise, great team, deep market understanding, outstanding individuals." – Dispute resolution 

"Kim & Chang provided solutions based on its accumulated experience and professional legal expertise, after thoroughly considering the client’s needs. It makes full use of internal resources and strives to achieve the best possible outcome. What is particularly impressive is that they do not merely respond to questions but proactively think from the client’s perspective to identify effective solutions." – Dispute resolution 

"The strongest attribute of Kim & Chang is they have experienced consultants from each industry, former government officers, and specialised lawyers by subject." – Dispute resolution 

"Kim & Chang is the largest law firm in South Korea, and their network to gain relevant information and manage relevant stakeholders is strong enough to guarantee a positive outcome." – Dispute resolution 

"Among all law firms, Kim & Chang stands out for its unmatched expertise and extensive track record in corporate governance restructuring matters – particularly those involving the formation of holding companies and the conversion of branches into subsidiaries in Korea. With a deep bench of seasoned experts and proven know-how, the law firm consistently earned our trust as a reliable partner for such critical mandates." – Insurance 

"Kim & Chang boasts a diverse team of top-tier experts across various fields and is exceptionally efficient in handling matters. For instance, in a recent advisory case that required the opinion of an actuary, other law firms were unable to provide timely support due to the lack of in-house actuarial professionals. In contrast, Kim & Chang was able to deliver the necessary opinion swiftly, as it has its own in-house actuary." – Insurance  

"Kim & Chang is consistently hands-on throughout every stage of the process, demonstrating a deep commitment to understanding our specific needs. They offer practical, actionable advice that is tailored to real-world applications, helping us navigate complex legal challenges with confidence. Additionally, they provide a comprehensive understanding of the issues at hand, ensuring that we see the full picture and potential implications before making any decisions. This thorough approach enables us to make informed choices and effectively manage risks." – Labour and employment 

"I believe they are one of the very few law firms capable of providing detailed insights into their experiences, including enforcement trends observed from regulatory authorities. They approached the case with passion and a proactive mindset." – Regulatory 

"Kim & Chang is highly competent technically but also adopts a very practical approach towards conflict resolution. They are able to help manage the tax office very well and keep them focused on the key issues for resolution." – Tax 

"Kim & Chang is by far the most technically advanced advisors I have worked with in South Korea. Apart from being technically strong in all tax-related matters and constantly updating themselves on the changing regulations in the jurisdiction, they also take the time and effort to educate me on various initiatives that would be of benefit for my organisation. They are diligent, they are hard-working, and they provide exemplary service on a daily basis." – Tax 

Jongwon Jeon 

"Very professional, smart and knowledgeable on subject matter." 

"He is very actively collaborating with clients and contactable any time when I need to talk with him. He has a good insight into the legal system and business nature, especially in the medical device, pharmaceutical and healthcare service space, and he is good at designing a solution for a legal case from the beginning to the end." 

"His strength lies in his ability to evaluate the broad implications of a case through thorough risk analysis, while also offering rapid legal consultation for key decisions. He’s highly engaged in his work and always considers what’s best for the client. He is committed to leveraging the law firm’s internal resources to maximise client value." 

"First of all, he is super-professional and has a strong sense of responsibility. He works very hard and always gives us a clear response and action whenever we share any input. He's also knowledgeable enough to manage any legal issues of the alcohol industry. His professional management of a client and a case makes us feel comfortable about the positive outcome." 

"I've been working with him for several years on various matters, including audits, corporate governance, competition law, and litigation. He is a highly dedicated professional who consistently demonstrates exceptional analytical and problem-solving skills, and he exercises excellent judgement when providing legal advice. He has provided clear and practical guidance." 

"Mr. Jeon is consistently hands-on throughout every stage of the process, demonstrating a deep commitment to understanding our specific needs. He is very responsive and deeply cares about his clients, ensuring clear and timely communication at all times. Mr. Jeon offers practical, actionable advice tailored to real-world applications, helping us navigate complex legal challenges with confidence. Additionally, he provides a comprehensive understanding of the issues at hand, ensuring that we see the full picture and potential implications before making any decisions. This thorough approach enables us to make informed choices and effectively manage risks." 

Byung-Wha Kim 

"He provided professional and practical advice in the field of antitrust law." 

Chanik Park 

"He is professional." 

Hyun Wook Shin 

"Based on his extensive experience in corporate advisory, he does not offer abstract or surface-level solutions. Instead, he consistently strives to understand issues from the company's perspective and provide practical, tailored legal guidance." 

"He possesses top-tier expertise in the insurance sector, accurately identifies clients’ issues, and provides clear and effective solutions." 

 Kenny Sung 

"Kenny is very knowledgeable and practical. I have only good things to say about Kenny. He has helped us through a number of tax audits and other tax issues in South Korea. He's always been able to give practical solutions that make a difference. More importantly, he's always helped us obtain a good result."  

"Kenny is the primary contact at Kim & Chang and is the liaison between us and the broader Kim & Chang organisation. Over the past five years, Kenny has provided the most incredible service that I am still recommending him to other colleagues of mine in other organisations. He is hard-working, diligent, technically advanced, and provides excellent customer support daily. He is an exceptional leader, and I can see how he brings up other team members in our interactions to provide them with the opportunity to learn and advance in their careers." 

"Active and productive communication with HQ counterparts and NTS with strong knowledge in a gentle manner." 

Michael Yu 

"Excellent advisor, great communicator, very structured, reliable, understands clients' needs." 

An undisputed premier firm, Lee & Ko holds steady in the rankings as a fool-proof choice for its impressive roster of offshore and onshore clients. Its renowned finance practice wins plaudits from peers and clients that acknowledge its frequent role in representing lenders. The firm was elevated this year into the ‘Outstanding’ tiers for labour and employment and real estate. Lee & Ko’s traditional dominance in debt capital markets helped it maintain a steady flow of debt deals. Managing partner Yong Seok Ahn is recognised for his corporate and competition expertise.  

The firm has continued to evolve its practice areas through strategic hiring and internal changes. In the dispute resolution sector, Lee & Ko strengthened its team with key hires, including partners Young Su Kang, Tai Han Ha and Eun Pyo Hong in March 2025, and Eun Young Park in October 2024. The competition practice was bolstered by the addition of senior advisor Moo Jin Choi from the Korea Fair Trade Commission in March 2025. 

The firm has bolstered its intellectual property practice with a key partner-level hires in the past year. Hankil D. Kang joined the firm as a partner in May 2024, from Bae, Kim & Lee. These strategic appointments underscore Lee & Ko's commitment to expanding its IP capabilities, particularly in healthcare-related fields. 

Client feedback 

"At Lee & Ko, they demonstrated a clear and thorough understanding of our business and its unique characteristics. Rather than providing general legal advice, they offered precise, tailored answers that addressed the specific issues we faced. Moreover, they provided clear and practical guidance on how to resolve those issues effectively, helping us make well-informed decisions at each stage. Their ability to grasp the core of our business and deliver relevant, actionable solutions was especially valuable." – Competition/antitrust 

"Lee & Ko actively seeks to understand the company's business areas and provides effective solutions based on this understanding." – Competition/antitrust 

"They are professional and excellent." – Competition/antitrust 

"Lee & Ko demonstrates strong expertise across a wide range of regulatory and compliance matters, particularly in complex areas such as competition law and corporate investigations. 
The firm is known for its depth of legal analysis, clear strategic advice, and ability to provide practical solutions tailored to the client’s business context. Their responsiveness and collaborative approach make them a reliable partner in sensitive and time-pressured situations. Overall, Lee & Ko combines legal excellence with commercial awareness, which makes their counsel both actionable and effective." – Competition/antitrust 

"They have top-tier experts and professional legal support." – Competition/antitrust 

"Lee & Ko conducted a thorough review with a high level of expertise and presented various alternatives." – Competition/antitrust  

"Lee & Ko combines deep legal expertise with a strong understanding of the Korean regulatory and business landscape. The firm is highly responsive and practical and consistently delivers high-quality advice across complex matters. Their client-focused approach and professionalism make them a trusted partner in both domestic and cross-border issues." – Competition/antitrust 

"They have great expertise and are easy to communicate with." – Competition/antitrust 

"The law firm holds business-specific professional expertise." – Competition/antitrust 

"As OK Financial Group was recently designated as a large business group by the KFTC, it is undergoing its first investigation by the KFTC. In this unfamiliar situation, Lee & Ko has been providing proactive and effective support in responding to the investigation. Moreover, they have been offering practical advice to help mitigate future risks related to fair trade compliance." – Competition/antitrust 

"Lee & Ko demonstrated exceptional diligence in investigating the factual basis of our case. Their thorough approach to fact-finding appears to have been a critical factor in the successful outcome of the litigation. Effective legal representation in damages lawsuits requires a comprehensive understanding of all relevant circumstances, and Lee & Ko excelled in this aspect of their service. The firm appears to have developed and executed an effective litigation strategy based on their thorough fact investigation. In damages lawsuits, establishing or refuting the elements of liability (duty, breach, causation and damages) requires strategic planning and execution." – Corporate and M&A 

"Their answers are always reliable and prompt." – Corporate and M&A 

"Lee & Ko is a premier Korean law firm with a well-earned reputation for legal excellence, strategic insight, and client dedication. The firm’s strength lies in its ability to deliver sophisticated, commercially sound advice across a wide range of complex legal issues, particularly in cross-border disputes and international arbitration. One of the most commendable aspects of Lee & Ko is its deep bench of highly skilled professionals who work seamlessly across practice areas. The firm demonstrates a clear understanding of client objectives, and its advice consistently reflects both technical precision and practical judgement." – Dispute resolution 

"Lee & Ko has a deep understanding of trademark law and provides practical, business-orientated advice. Their team is highly responsive, detail-orientated, and reliable in managing both domestic and international trademark matters." – Intellectual property 

"They analysed the technology in detail and reviewed the risks with suggested alternatives." – Intellectual property 

"Lee & Ko is one of the most prestigious law firms in Korea, and its diverse range of expertise enables effective communication among specialists from various fields. This collaboration ensures that clients receive accurate, comprehensive responses in a timely manner." – Intellectual property 

Jeong Yoon Choi 

"Jeongyoon is a highly knowledgeable and reliable expert in Korean competition law. She has a clear ability to analyse complex regulatory issues and translate them into practical, business-orientated advice. Her communication is always precise, timely, and solution-focused, which makes her an effective partner in both advisory and contentious matters. Her calm and thoughtful approach builds trust with clients, and her deep understanding of KFTC practice adds significant value to strategic decision-making." 

Byong Ki Chung 

"He demonstrates exceptional legal expertise and thorough understanding of complex issues. He is highly responsive and communicates clearly, ensuring that clients are always well-informed. His practical approach and attention to detail enable him to deliver effective solutions tailored to the client’s needs. Additionally, his professionalism and dedication build strong trust and confidence in his work." 

Sanghoon Han 

"Sanghoon is a highly capable and practical lawyer, particularly skilled in navigating complex construction disputes. What sets him apart is not just his deep knowledge of international arbitration and construction law but also the clarity and focus he brings to fast-moving, high-stakes matters. He has a unique ability to break down technically and legally complex issues into clear, manageable strategies – always keeping the big picture in mind while paying close attention to detail. In our experience, Sanghoon is exceptionally responsive. He’s consistently available, quick to grasp evolving issues, and solution-orientated in a way that gives clients real confidence. Even under tight deadlines or with complicated procedural developments, he remains calm, clear-headed, and constructive. Equally important, he’s a pleasure to work with. His collaborative and down-to-earth style makes it easy to align quickly on strategy, even across jurisdictions and teams. That combination of legal acumen, responsiveness, and approachable professionalism is rare – and extremely valuable in high-stakes cross-border matters." 

Jang Hyun Ka 

"He has been serving as the main handler in the current KFTC investigation, providing highly proactive and hands-on advice. Despite the fast-moving and urgent nature of the situation, he has responded swiftly and delivered effective, well-calibrated counsel based on his extensive experience." 

"He excels in communication with clients and responds quickly and proactively." 

Ji Yeon Kim 

"She does a thorough fact investigation and strategic case management." 

“She successfully completes the given mission with positive thinking and unyielding will.” 

Jaewoo Kwak 

"Jaewoo provides prompt and clear advice on trademark matters. He is professional, attentive to detail, and offers practical solutions tailored to our business needs." 

"He responds positively to new questions without panicking." 

"Jaewoo is the type of person you enjoy working with, both professionally and personally. He has been instrumental in applying his expertise in intellectual property across various fields. His exceptional knowledge and dedication have earned him the distinction of being named Attorney of the Year in Korea for consecutive years." 

In Seon Lee 

"He is aggressive, professional, and kind." 

Miji Lee 

"With over 20 years of experience in the field of competition law, her deep knowledge and practical expertise have been an invaluable asset to our company. Her extensive understanding of both legal regulations and industry practices allowed her to provide advice that was not only legally sound but also highly relevant to the realities of our business operations. Her ability to anticipate potential regulatory risks and suggest proactive, practical solutions helped us navigate complex situations with confidence. Her insights into subcontracting regulations, fair trade practices, and competition compliance significantly contributed to strengthening our internal systems and decision-making processes. Thanks to her guidance, we were able to manage sensitive business matters more effectively and minimise legal exposure in critical areas." 

Hyun Ah Song 

"She always provides positive speech and friendly answers." 

Jeong-Ho Sun 

"He understands even the most complex issues very well from the company’s perspective and always provides the best advice, which is why we keep turning to him. He has particularly strong insights into fair trade matters and is highly regarded in other areas of laws and regulations as well." 

"He has great expertise, is easy to communicate with, and has great relationships." 

"He has good communication with clients and expertise in competition law." 

Work highlights 

Represented DB Insurance as appellant in the High Court appeal reversing the district court’s ruling that an independent-contractor sales-team leader was an employee entitled to severance pay, establishing a key 2024 precedent on contractor-versus-employee classification under the Labor Standards Act. 

Represented Kumho Tire as respondent in the High Court labour dispute brought by newly direct-hired workers seeking retroactive employee-stock benefits for the period when they had been unlawfully dispatched, securing dismissal of all claims and setting a 2024 precedent that discretionary ESOP benefits are not subject to retroactive employer liability. 

Represented Samsung Electronics and its senior officers as appellants in the High Court appeal reversing their district-court convictions for negligent manslaughter and fire-safety violations arising from a fatal CO₂ leak at the client’s facility, establishing a 2024 precedent on causation and the scope of officers’ duties under Korea’s Serious Accidents Punishment Act. 

Key clients 

DSM-Firmenich Group, Hyundai Motor Company 

Yulchon secures its place in the ‘Outstanding’ band for competition, dispute resolution, M&A, private equity and tax this year. Its famed dispute resolution practice has more than 250 professionals and keeps apace with an evolving market, creating new disputes practice areas that are novel and innovative.  

The firm has strategically bolstered its team through key hires across various practice areas. The competition/antitrust practice has been particularly active in recruitment, welcoming Genny S Kim from Jipyong as a partner. However, the practice also saw the departures of Hyo Sung Kim in June 2024. 

The dispute resolution practice underwent substantial growth, welcoming three new partners including Jinsub Kim from Samsung C&T legal team dispute resolution TF, Shi Won Lee from a role as Secretary to the President for Public Office Discipline, and Jae Hwan Shin from National Court Administration. Two partners departed – Rak Hyun Kim to SK Group and Jae Eok Park. 

In the tax practice, Yulchon made strategic hires including Kwang Lae Cho from the Tax Tribunal, Jung Wook Jun from Samsung Life Insurance, and Se Bin Lee from Supreme Court of Korea. 

Work highlights 

Represented an auto parts manufacturer and its CEO in defending against criminal prosecution under health and safety laws. This is a significant victory for the client but also marks the first actual acquittal on the merits since the enactment of the Serious Accidents Punishment Act. 

Advised a foreign-owned company in negotiations with its labour union and represented it in defending against legal disputes at the labour office and Labor Relations Commission involving allegations of unfair labour practices and other violations of Korean labour laws. 

Client feedback 

"They are professional." – Competition/antitrust 

"The law firm offers accurate, tailored advice for business and timely communication. They are responsive, detail-orientated, and excellent at collaboration." – Competition/antitrust 

"They are professional, high quality, and timely." – Corporate and M&A 

"Excellent expertise, great team, deep market understanding, outstanding individuals." – Dispute resolution 

"Kim & Chang provided solutions based on its accumulated experience and professional legal expertise, after thoroughly considering the client’s needs. It makes full use of internal resources and strives to achieve the best possible outcome. What is particularly impressive is that they do not merely respond to questions but proactively think from the client’s perspective to identify effective solutions." – Dispute resolution 

"The strongest attribute of Kim & Chang is they have experienced consultants from each industry, former government officers, and specialised lawyers by subject." – Dispute resolution 

"Kim & Chang is the largest law firm in South Korea, and their network to gain relevant information and manage relevant stakeholders is strong enough to guarantee a positive outcome." – Dispute resolution 

"Among all law firms, Kim & Chang stands out for its unmatched expertise and extensive track record in corporate governance restructuring matters – particularly those involving the formation of holding companies and the conversion of branches into subsidiaries in Korea. With a deep bench of seasoned experts and proven know-how, the law firm consistently earned our trust as a reliable partner for such critical mandates." – Insurance 

"Kim & Chang boasts a diverse team of top-tier experts across various fields and is exceptionally efficient in handling matters. For instance, in a recent advisory case that required the opinion of an actuary, other law firms were unable to provide timely support due to the lack of in-house actuarial professionals. In contrast, Kim & Chang was able to deliver the necessary opinion swiftly, as it has its own in-house actuary." – Insurance  

"Kim & Chang is consistently hands-on throughout every stage of the process, demonstrating a deep commitment to understanding our specific needs. They offer practical, actionable advice that is tailored to real-world applications, helping us navigate complex legal challenges with confidence. Additionally, they provide a comprehensive understanding of the issues at hand, ensuring that we see the full picture and potential implications before making any decisions. This thorough approach enables us to make informed choices and effectively manage risks." – Labour and employment 

"I believe they are one of the very few law firms capable of providing detailed insights into their experiences, including enforcement trends observed from regulatory authorities. They approached the case with passion and a proactive mindset." – Regulatory 

"Kim & Chang is highly competent technically but also adopts a very practical approach towards conflict resolution. They are able to help manage the tax office very well and keep them focused on the key issues for resolution." – Tax 

"Kim & Chang is by far the most technically advanced advisors I have worked with in South Korea. Apart from being technically strong in all tax-related matters and constantly updating themselves on the changing regulations in the jurisdiction, they also take the time and effort to educate me on various initiatives that would be of benefit for my organisation. They are diligent, they are hard-working, and they provide exemplary service on a daily basis." – Tax 

Jongwon Jeon 

"Very professional, smart and knowledgeable on subject matter." 

"He is very actively collaborating with clients and contactable any time when I need to talk with him. He has a good insight into the legal system and business nature, especially in the medical device, pharmaceutical and healthcare service space, and he is good at designing a solution for a legal case from the beginning to the end." 

"His strength lies in his ability to evaluate the broad implications of a case through thorough risk analysis, while also offering rapid legal consultation for key decisions. He’s highly engaged in his work and always considers what’s best for the client. He is committed to leveraging the law firm’s internal resources to maximise client value." 

"First of all, he is super-professional and has a strong sense of responsibility. He works very hard and always gives us a clear response and action whenever we share any input. He's also knowledgeable enough to manage any legal issues of the alcohol industry. His professional management of a client and a case makes us feel comfortable about the positive outcome." 

"I've been working with him for several years on various matters, including audits, corporate governance, competition law, and litigation. He is a highly dedicated professional who consistently demonstrates exceptional analytical and problem-solving skills, and he exercises excellent judgement when providing legal advice. He has provided clear and practical guidance." 

"Mr. Jeon is consistently hands-on throughout every stage of the process, demonstrating a deep commitment to understanding our specific needs. He is very responsive and deeply cares about his clients, ensuring clear and timely communication at all times. Mr. Jeon offers practical, actionable advice tailored to real-world applications, helping us navigate complex legal challenges with confidence. Additionally, he provides a comprehensive understanding of the issues at hand, ensuring that we see the full picture and potential implications before making any decisions. This thorough approach enables us to make informed choices and effectively manage risks." 

Byung-Wha Kim 

"He provided professional and practical advice in the field of antitrust law." 

Chanik Park 

"He is professional." 

Hyun Wook Shin 

"Based on his extensive experience in corporate advisory, he does not offer abstract or surface-level solutions. Instead, he consistently strives to understand issues from the company's perspective and provide practical, tailored legal guidance." 

"He possesses top-tier expertise in the insurance sector, accurately identifies clients’ issues, and provides clear and effective solutions." 

 Kenny Sung 

"Kenny is very knowledgeable and practical. I have only good things to say about Kenny. He has helped us through a number of tax audits and other tax issues in South Korea. He's always been able to give practical solutions that make a difference. More importantly, he's always helped us obtain a good result."  

"Kenny is the primary contact at Kim & Chang and is the liaison between us and the broader Kim & Chang organisation. Over the past five years, Kenny has provided the most incredible service that I am still recommending him to other colleagues of mine in other organisations. He is hard-working, diligent, technically advanced, and provides excellent customer support daily. He is an exceptional leader, and I can see how he brings up other team members in our interactions to provide them with the opportunity to learn and advance in their careers." 

"Active and productive communication with HQ counterparts and NTS with strong knowledge in a gentle manner." 

Michael Yu 

"Excellent advisor, great communicator, very structured, reliable, understands clients' needs." 

Client feedback 

"They are professional." – Competition/antitrust 

"The law firm offers accurate, tailored advice for business and timely communication. They are responsive, detail-orientated, and excellent at collaboration." – Competition/antitrust 

"They are professional, high quality, and timely." – Corporate and M&A 

"Excellent expertise, great team, deep market understanding, outstanding individuals." – Dispute resolution 

"Kim & Chang provided solutions based on its accumulated experience and professional legal expertise, after thoroughly considering the client’s needs. It makes full use of internal resources and strives to achieve the best possible outcome. What is particularly impressive is that they do not merely respond to questions but proactively think from the client’s perspective to identify effective solutions." – Dispute resolution 

"The strongest attribute of Kim & Chang is they have experienced consultants from each industry, former government officers, and specialised lawyers by subject." – Dispute resolution 

"Kim & Chang is the largest law firm in South Korea, and their network to gain relevant information and manage relevant stakeholders is strong enough to guarantee a positive outcome." – Dispute resolution 

"Among all law firms, Kim & Chang stands out for its unmatched expertise and extensive track record in corporate governance restructuring matters – particularly those involving the formation of holding companies and the conversion of branches into subsidiaries in Korea. With a deep bench of seasoned experts and proven know-how, the law firm consistently earned our trust as a reliable partner for such critical mandates." – Insurance 

"Kim & Chang boasts a diverse team of top-tier experts across various fields and is exceptionally efficient in handling matters. For instance, in a recent advisory case that required the opinion of an actuary, other law firms were unable to provide timely support due to the lack of in-house actuarial professionals. In contrast, Kim & Chang was able to deliver the necessary opinion swiftly, as it has its own in-house actuary." – Insurance  

"Kim & Chang is consistently hands-on throughout every stage of the process, demonstrating a deep commitment to understanding our specific needs. They offer practical, actionable advice that is tailored to real-world applications, helping us navigate complex legal challenges with confidence. Additionally, they provide a comprehensive understanding of the issues at hand, ensuring that we see the full picture and potential implications before making any decisions. This thorough approach enables us to make informed choices and effectively manage risks." – Labour and employment 

"I believe they are one of the very few law firms capable of providing detailed insights into their experiences, including enforcement trends observed from regulatory authorities. They approached the case with passion and a proactive mindset." – Regulatory 

"Kim & Chang is highly competent technically but also adopts a very practical approach towards conflict resolution. They are able to help manage the tax office very well and keep them focused on the key issues for resolution." – Tax 

"Kim & Chang is by far the most technically advanced advisors I have worked with in South Korea. Apart from being technically strong in all tax-related matters and constantly updating themselves on the changing regulations in the jurisdiction, they also take the time and effort to educate me on various initiatives that would be of benefit for my organisation. They are diligent, they are hard-working, and they provide exemplary service on a daily basis." – Tax 

Jongwon Jeon 

"Very professional, smart and knowledgeable on subject matter." 

"He is very actively collaborating with clients and contactable any time when I need to talk with him. He has a good insight into the legal system and business nature, especially in the medical device, pharmaceutical and healthcare service space, and he is good at designing a solution for a legal case from the beginning to the end." 

"His strength lies in his ability to evaluate the broad implications of a case through thorough risk analysis, while also offering rapid legal consultation for key decisions. He’s highly engaged in his work and always considers what’s best for the client. He is committed to leveraging the law firm’s internal resources to maximise client value." 

"First of all, he is super-professional and has a strong sense of responsibility. He works very hard and always gives us a clear response and action whenever we share any input. He's also knowledgeable enough to manage any legal issues of the alcohol industry. His professional management of a client and a case makes us feel comfortable about the positive outcome." 

"I've been working with him for several years on various matters, including audits, corporate governance, competition law, and litigation. He is a highly dedicated professional who consistently demonstrates exceptional analytical and problem-solving skills, and he exercises excellent judgement when providing legal advice. He has provided clear and practical guidance." 

"Mr. Jeon is consistently hands-on throughout every stage of the process, demonstrating a deep commitment to understanding our specific needs. He is very responsive and deeply cares about his clients, ensuring clear and timely communication at all times. Mr. Jeon offers practical, actionable advice tailored to real-world applications, helping us navigate complex legal challenges with confidence. Additionally, he provides a comprehensive understanding of the issues at hand, ensuring that we see the full picture and potential implications before making any decisions. This thorough approach enables us to make informed choices and effectively manage risks." 

Byung-Wha Kim 

"He provided professional and practical advice in the field of antitrust law." 

Chanik Park 

"He is professional." 

Hyun Wook Shin 

"Based on his extensive experience in corporate advisory, he does not offer abstract or surface-level solutions. Instead, he consistently strives to understand issues from the company's perspective and provide practical, tailored legal guidance." 

"He possesses top-tier expertise in the insurance sector, accurately identifies clients’ issues, and provides clear and effective solutions." 

 Kenny Sung 

"Kenny is very knowledgeable and practical. I have only good things to say about Kenny. He has helped us through a number of tax audits and other tax issues in South Korea. He's always been able to give practical solutions that make a difference. More importantly, he's always helped us obtain a good result."  

"Kenny is the primary contact at Kim & Chang and is the liaison between us and the broader Kim & Chang organisation. Over the past five years, Kenny has provided the most incredible service that I am still recommending him to other colleagues of mine in other organisations. He is hard-working, diligent, technically advanced, and provides excellent customer support daily. He is an exceptional leader, and I can see how he brings up other team members in our interactions to provide them with the opportunity to learn and advance in their careers." 

"Active and productive communication with HQ counterparts and NTS with strong knowledge in a gentle manner." 

Michael Yu 

"Excellent advisor, great communicator, very structured, reliable, understands clients' needs." 

Yulchon secures its place in the ‘Outstanding’ band for competition, dispute resolution, M&A, private equity and tax this year. Its famed dispute resolution practice has more than 250 professionals and keeps apace with an evolving market, creating new disputes practice areas that are novel and innovative.  

The firm has strategically bolstered its team through key hires across various practice areas. The competition/antitrust practice has been particularly active in recruitment, welcoming Genny S Kim from Jipyong as a partner. However, the practice also saw the departures of Hyo Sung Kim in June 2024. 

The dispute resolution practice underwent substantial growth, welcoming three new partners including Jinsub Kim from Samsung C&T legal team dispute resolution TF, Shi Won Lee from a role as Secretary to the President for Public Office Discipline, and Jae Hwan Shin from National Court Administration. Two partners departed – Rak Hyun Kim to SK Group and Jae Eok Park. 

In the tax practice, Yulchon made strategic hires including Kwang Lae Cho from the Tax Tribunal, Jung Wook Jun from Samsung Life Insurance, and Se Bin Lee from Supreme Court of Korea.