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Mr. Ji Yun SEOK is a partner at DR & AJU LLC. His practice is primarily focused on Intellectual Property, Tax Litigation, Customs, Customs Inspections & Investigations, WTO & FTA, International Arbitration & Litigation, Infrastructure & Technology, Environmental, Social, Governance (ESG), and Europe.
Mr. Seok has handled various cases related to intellectual property rights, national tax, customs, and general civil disputes on behalf of domestic and foreign companies. In addition, he is committed to handling various disputes and providing advisory services across different industrial sectors, such as public services, energy, F&B, automobiles, electricity, and semiconductors.


      • DR & AJU LLC (2023-Present)
      • HMP Law (2012-2023)
      • Public Service Judge Advocate, Seoul High Prosecutors’ Office (2010-2012)
      • Public Service Judge Advocate, Korea Legal Aid Corporation (2009-2010)
      • Judicial Research and Training Institute of the Supreme Court of Korea (2009)
      • Université Paris II Panthéon-Assas (LLM, 2023)
      • College of Law, Korea University (LLB, 2007)
      • Daejeon Foreign Language High School (2000)
      • Admitted to Bar, Korea (2009)
      • Korean
      • English
      • French

Representative Activities

      • Industrial Accident Lawyer, Korea Electric Power Corporation (2022)
      • Executive Director, The Korean Association of Rehabilitation Bankruptcy Law (2018)
      • Legal Counsel, Korea Customs Service (2017)
      • Legal Counsel, National Tax Service (2016)
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  • Representative Matters
      • Won a case involving Microsoft’s copyright infringement claims against Seoul Metro regarding the subway passenger information system
      • Won a case involving unfair competition claims raised by the U.S. OREO Sandwich Cookies regarding imitation
      • Won a case involving trade secrets infringement claims on petrochemical waste disposal technology raised by competitors
      • Won a case involving the application of WTO concession tariff rates related to the classification dispute over imported semiconductors from Belgium
      • Won a case involving the application of preferential tariff rates under the Asia-Pacific Trade Agreement (APTA) for goods transiting through Hong Kong using through bills of lading (B/L)
      • Advised on preferential tariffs under the Korea-EU Free Trade Agreement (FTA) following the application of the U.K.-approved exporter system
      • Won a financial case of the Electricity Regulatory Commission involving the imposition of large-scale occupation and use fees for public waters on thermal power plant transmission connection facilities
      • Won an arbitration case seeking compensation for damages arising from a dispute over the replacement of hydrogen fuel cells at thermal power plants
      • Advised on the formation of a joint water supply system for the Barakah Nuclear Power Plant in the United Arab Emirates
      • Won a large-scale wage claim arising from the application of the peak wage system to public enterprise employees
      • Won a case involving the revocation of the sale of airport operation rights following the privatization of Cheongju International Airport
      • Won a case involving execution judgment and fraudulent action revocation lawsuit against a domestic investor of a Hollywood film company in the United States
      • Won an arbitration case seeking compensation for damages arising from the establishment of an automobile plant in Morocco by a multinational automobile manufacturer
      • Advised on unfair support practices, such as tunneling, in logistics and transportation by a conglomerate’s subsidiary
      • Enforcement of Foreign Judgments in South Korea, Lexology (Co-author, 2012-2020)
      • Rising Stars 100, Legal Times (2022)
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Practice Areas