Mr. Jong Sun CHOI is Head of Intellectual Property PG. His practice is primarily focused on Intellectual Property, Corporate, Criminal Defense Litigation, General Civil Disputes, and Blockchain.

Mr. Choi served as a judge of the Patent Court and as a member of the Subcommittee on Patent Law at the Korean Intellectual Property Office.
Mr. Choi served as a judge of the Intellectual Property Department of the Seoul District Court and the Patent Court. He also served as a member of the Subcommittee on Patent Law at the Korean Intellectual Property Office. He is currently a member of the Civil Mediation Committee at the Patent Court and an arbitrator of the Korea Commercial Arbitration Board.
Mr. Choi advises and represents various corporations, including Posco International, National Health Insurance Corporation, Korea Gas Corporation, Kumho Tire, Seoul National University R&DB Foundation, NHN Commerce, SR, Union Korea Pharm Co., Ltd., and WoojungBIO Inc.

Bar Admissions

• Admitted to Bar, Korea (2001)

Education

• Visiting Scholar, University of Houston (2017)
• Sungkyunkwan University (BA in Public Administration, 1997)
• Jaehyun High School (1990)

Significant Accomplishments

• Arbitrator, Korea Commercial Arbitration Board (2021)
• D&A LLC (2019-Present)
• Attorney, DARAE Law & IP Group (2019)
• Presiding Judge, Daegu District Court (2018-2019)
• Eastern District of Texas, United States District Court (2017)
• Presiding Judge, Daegu District Court (2017)
• Member, Subcommittee on Patent Law, Korean Intellectual Property Office (2014-2016)
• Judge, Patent Court (2012)
• Judge, Suwon District Court (2011)
• Judge, Daegu Western District Court (2008)
• Judge, Busan District Court (2007)
• Judge, Busan Family Court (2005)
• Judge, Intellectual Property Department, Seoul District Court (2003)
• Law Clerk, Seoul High Court (2002-2003)
• Law Clerk, Incheon District Court (2001-2002)
• Judicial Research and Training Institute (2001)

Professional Activities and Experience

• Represented a client accused of violating the Capital Markets Act for allegedly earning unjust enrichment of KRW 10 billion in a lawsuit where the court decided that it was impractical to calculate the unjust enrichment
• Represented a client accused of professional breach of trust(in business for providing a hotel worth KRW 1 trillion to the parent company as collateral without any debt collection measures and received the decision on the absence of suspicion
• Represented a company executive accused of breach of trust for a high-priced acquisition related to M&A and received the verdict of not guilty from the Supreme Court

• Commercialisation of Healthcare in South Korea: Overview, Practical Law, Thomson Reuters (Co-author, 2021)
• Related Issues and Measures to Improve the Revision Adjudication Request (Related to Its Timing and Retroactive Effect), Symposium for the 20th Anniversary of the Patent Court of Korea, the Patent Court of Korea (2018)
• Examining the New Basis for Refusal Not Allowed in the Litigation to Revoke the Rulings to Dismiss the Request for Appeal Against the (Patent Registration) Refusal Decision, the Supreme Court Special Litigation Working Group, Judicial Development Foundation (2018)
• Proposal for Optimization of Inventive Step Judgment, Patent Litigation Research Vol. 7, Patent Court of Korea (2017)
• Composition of the Invention-to-be-Confirmed Subject to the Judgment of the Prior-Art Defense, LAW & TECHNOLOGY, Seoul National University Center for Technology and Law (2016)
• 100 Information Law Cases (2), Korea Information Law Society, Pakyoungsa (Co-author, 2016)
• Commentary on the Design Protection Act, Pakyoungsa (Co-author, 2015)
• Regarding Primary Patent Requirements for Numerical Limitation Inventions, the Supreme Court Special Litigation Working Group, Judicial Development Foundation (2015)
• Intellectual Property Litigation Practice (3rd Edition), the Patent Court of Korea Intellectual Property Litigation Practice Research Group, Pakyoungsa (Co-author, 2014)
• 100 Patent Law Cases (4th Edition), Compilated by Korea Patent Law Society, Pakyoungsa (Co-compilator, 2014)
• The Heterogeneous Effect of Numerical Limitation Inventions, LAW & TECHNOLOGY, Seoul National University Center for Technology and Law (2014)
• Review of Patent Law Article 63 and 170 Cases by Type, LAW & TECHNOLOGY, Seoul National University Center for Technology and Law (2013)
• Intellectual Property Trial Practice Handbook, Court Administration Office (Co-author, 2004)