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Byung-Chol Yoon

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Kim & Chang

Work Department

International Arbitration & Cross-Border Litigation, Litigation, Tax Audit & Tax Dispute Resolution, International Litigation, Corporate & M&A Litigation, Tax Litigation


Byung-Chol (B.C.) Yoon is a partner at Kim & Chang and the co-chair of the firm’s International Arbitration and Cross-Border Litigation Practice. He also practices in Litigation as well as Tax Audit and Tax Dispute Resolution Practices.

Mr. Yoon has extensive experience in international arbitration and cross-border disputes. He has represented the firm's clients in a broad range of fields such as mergers and acquisitions, overseas investments, construction and joint venture in more than 200 arbitration cases in various jurisdictions, under the rules of the ICC, LCIA, ICDR, SIAC, LMAA, JCAA and KCAB, as well as ad-hoc arbitration cases including UNCITRAL Arbitration Rule cases.

One of the high-profile cases which he represented as a counsel from 2006 to 2008 was an ICC arbitration worth USD three billion between a Korean conglomerate and foreign companies regarding the acquisition of a life insurance company. This remains one of the largest ever international arbitrations involving a Korean party.

Also, in 2011 and 2012, Mr. Yoon and his team successfully represented an international consortium against a Korean municipality in an ICC arbitration. This is the largest ICC arbitration with the total value of claims and counterclaims exceeding USD one billion and was the first major PPP infrastructure international arbitration in Korea. The team obtained two distinct awards for a total value of USD 750 million with all counterclaims dismissed within 18 months of filing of the arbitration.

Prior to joining the firm, Mr. Yoon served as a judge at the Seoul District Court of Korea and taught as an adjunct professor at the Seoul National University College of Law. He is currently a court member of the ICC International Court of Arbitration after serving as a member of the SIAC Board from 2009. He currently serves on the arbitration panels of ICSID, SIAC, ICDR, HKIAC and KCAB. In addition to his international career, his arbitration expertise has been highly valued in Korea where he was the President of the Korean Council for International Arbitration (KOCIA), playing a key role in promoting international arbitration and revising the KCAB’s International Arbitration Rules. At the same time, he served as the Secretary General of the Seoul International Dispute Resolution Centre (Seoul IDRC).

Mr. Yoon has been consistently ranked in the top tier as a star individual or leading individual for international arbitration and litigation practices by various notable legal directories including Chambers Global, Chambers Asia Pacific, Legal 500, The International Who’s Who of Commercial Arbitration and Euromoney’s Expert Guides. He frequently speaks on international arbitration issues and also has contributed numerous articles in the same field.

Mr. Yoon received an LL.M. from Harvard Law School in 1995, and an LL.M. from the Seoul National University School of law in 1993. He graduated from the Judicial Research and Training Institute of the Supreme Court of Korea in 1987, and received an LL.B. from the Seoul National University College of Law in 1985. He is admitted to the New York bar and Korea bar.


Korean and English


Admitted to bar, Korea, 1987; New York, 1996


Harvard Law School (LL.M., 1995)
Graduate School of Law, Seoul National University (LL.M., 1993)
Judicial Research and Training Institute of the Supreme Court of Korea (1987)
College of Law, Seoul National University (LL.B., 1985)

Asia Pacific: Regional International Arbitration

Leading firms

Within: Leading firms

Korean heavyweight Kim & Chang’s Seoul office handles work not just in engineering, but also concerning M&A disputes, global projects and investment disputes. Chul-Won Lee is representing a Korean shipyard in a $500m dispute with an offshore drilling contractor, with other key lawyers in the team including Byung-Chol Yoon and Eun Young Park. Foreign attorneys of note include Joel Richardson and Kay-Jannes Wegner – the former is admitted in the District of Columbia, the latter in England and Germany; Richardson and Byung-Woo Im represent a Korean industrial company in a dispute concerning oil pipelines in the GCC region.

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South Korea

International arbitration

Within: International arbitration

Kim & Chang ‘consistently delivers an extremely high level of service' in the most complex international disputes, particularly within M&A, construction and shipping sectors. The practice jointly led by Byung-Chol Yoon  and Eun Young Park; Yoon ‘manages the client interface and client meetings very well’ and is highly experienced in cross-border disputes; he and Sungjean Seo successfully defended a Korean shipbuilder in a London-based ad hoc arbitration. Meanwhile, Park, Byung-Woo Im and Joel Richardson represented the claimant, a Korean subsidiary of a French industrial gases supplier, in ICC arbitration over the termination of a supply agreement. Kay-Jannes Wegner is ‘one of the best advocates in Korea’; he regularly acts in cases involving European interests. Richard Menard and Chul-Won Lee are also recommended. Liz Kyo-Hwa Chung has joined Microsoft Korea as head of corporate, external and legal affairs.

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