Jiyul Yoo Senior Foreign Attorney
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  • TEL 82 2 6003 7552
  • FAX 82 2 6003 7804
  • E-MAIL
Jiyul Yoo is a senior foreign attorney at Yoon & Yang LLC. His main practice areas include corporate law, international matters, healthcare, and intellectual property.
Jiyul Yoo primarily advises global foreign companies and its domestic subsidiaries and advises domestic companies on foreign matters. Mr. Yoo has authored publications including “U.S. Anti-dumping Law and Practice,” a book well received by the international trade community in Korea. Mr. Yoo has chaired Yoon & Yang’s healthcare practice group and served as a lecturer at the Judicial Research & Training Institute, member of the Korean Appeal Agency on Doping, and a member of the Advisory Committee on Korea-US FTA of the Ministry of Foreign Affairs.


  • 2005-present Yoon & Yang LLC
  • 2010-17 Member, The Legal Advisory Committee on International Investment Dispute of the Ministry of Justice
  • 2012-13 Named in Euromoney Legal Media Group’s AsiaLaw Leading Lawyers
  • 2009-13 Member, Korean Appeal Agency on Doping
  • 2010-11 Visiting Lecturer, Judicial Training and Research Institute
  • 2009 Member, Pusan Financial Hub Advisory Board
  • 2009 Lecturer, Introduction to Law, Sangmyung University
  • 2006-09 Member, Korea Anti-doping Agency
  • 2006-07 Expert Advisory Member of the Korea-U.S. Free Trade Agreement, Ministry of Foreign Affairs and Trade
  • 2005-07 Lecturer, Youngsan University Law School
  • 2002-06 Civilian Trade Negotiations Advisory Group for Competition Policy for Korean’s Ministry of Foreign Affairs and Trade
  • 2005 Advisory Board for Advanced Trade Nation of the Ministry of Finance and Economy
  • 2004 Member, The Korea Trade Commission Task Force on International Trade Regulations
  • 2002-05 Yulchon LLC
  • 2001-02 Advisory Counsel, Overseas Korean Lawyers, Legal Service Center for International Trade and Promotion of Korea’s Ministry of Justice
  • 2001-02 Pillsbury Winthrop LLP (Washington, DC)
  • 1998-00 Dorsey & Whitney LLP (Washington, DC)
  • 1995-98 Winthrop, Stimson, Putnam & Roberts (Washington, DC)


  • 1995 Vanderbilt School of Law, J.D.
  • 1990 Columbia University, Graduate School of Business, M.B.A.
  • 1988 Seoul National University, Department of International Relations, B.A.

Representative Matters

  • Advised on US litigation between SK Hynix and San Disk concerning trade secrets
  • Advised on international arbitration and litigation secrets between OTO Melara in Italy and Hyundi Wia concerning trade secrets
  • Advised on US company M on litigation against domestic company G
  • Advised on Canadian company S on litigation against domestic company D
  • Advised on matters including a domestic pharmaceutical company’s overseas expansion, a foreign pharmaceutical company’s entry into Korea, health insurance benefit list listing, clinical trials, drug price determination, Green List listing, and K-Quarantine
  • Advised Qualcomm on debt-for-equity swap, workout, and court receivership
  • Advised the largest shareholder of Irevo on its sale of shares to Assa Abloy in Sweden
  • Advised on the establishment of a joint venture (Randomhouse Joongang) between Random House and Joongang M&B
  • Advised company T on sales of its shares to Google
  • Advised SK Chemicals, Samyang Corporation, Saehan Media, and Shinho Paper on US anti-dumping cases


  • Leading Lawyer, Corporate Governance, asialaw Leading Lawyers (2012, 2013)


  • “U.S. Antidumping Law and Practice,” Dasan Publishing Co., 2002
  • “Impact of the South Korea-US Free Trade Agreement on the Korean pharmaceutical industry”, Practical Law Multi-Jurisdictional Guide, Life Sciences., Co-Author, 2012
  • “Enforcement of competition law in the South Korean pharmaceutical industry”, Practical Law Multi-Jurisdictional Guide, Life Sciences, Co-Author, 2013
  • “Remedies for Unfair Trade Practices in Relation to the Intellectual Property Right Infringement in South Korea”, Michigan International Lawyer Co-Author, Winter 2013