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Korean Attorney

Chang Ik SUNG

Mr. Chang Ik Sung is a partner in the IP & Technology Group of the Litigation Group. Mr. Sung mainly advises and represents clients on IP rights, product liability issues, general civil and criminal proceedings, and family law and inheritance proceedings. 

Previously, he served as a judge in the Patent Court and as a Chief Justice in the Ulsan District Court, and he has gained a wide range of legal experience from numerous top-tier domestic and international law firms.

He represents both domestic and international clients based on his experience as a judge and an attorney in the areas of IP, and general civil and criminal proceedings. He also serves as an arbitrator on the Korean Commercial Arbitration Board. He continues to actively research and publish on the topics of patent law as a member of the Korea Patent Law Society and the Korea Association for Info-Media Law.

Education Close

  • 2017Future Integrated-Technology Program, College of Engineering, Seoul National University
  • 2004Georgetown University Law Center (LL.M.)
  • 1993Seoul National University (LL.B.)

Experience Close

  • 2017-PresentPartner, JIPYONG LLC
  • 2022-PresentTemporary Director, Education Foundation of Kyonggi University
  • 2019-PresentMember, Donation Management Committee, Korea Institute for Advancement of Technology
  • 2016-PresentMediator, Patent Court
  • 2015-PresentMediator, Small & Medium-Sized Businesses Technical Dispute Mediation∙Arbitration Committee
  • 2012-PresentArbitrator, The Korean Commercial Arbitration Board
  • 2019-2021Auditor, Korean Intellectual Property Lawyers Association
  • 2019-2021Legal Advisor, Personal Information Protection Commission
  • 2018-2021Member, HR Committee I, Seoul City Government
  • 2017Attorney at Law, Chang-Ik SUNG Office
  • 2017-2018Advisor, Special Committee on Constitutional Amendment, National Assembly
  • 2016-2021Director, Seoul Volunteer Center
  • 2016-2019Mediator, Industrial Technology Dispute Mediation Committee
  • 2014-2019Director, Korean Intellectual Property Lawyers Association
  • 2012-2017Attorney at Law, One Law Partners, LLC
  • 2011-2012Chairperson, Junggu Election Commission, Ulsan
  • 2011-2012Presiding Judge, Ulsan District Court
  • 2009-2011Judge, Patent Court
  • 2007-2009Judge, Busan High Court
  • 2004-2005Finnegan, Henderson, Farabow, Garrett & Dunner LLP (International Guest)
  • 2001-2002Special Investigator, Cha Jung-Il’s Special Prosecution Team
  • 2001Visiting Attorney, Matsuo & Kosugi, Japan
  • 1999-2006Attorney at Law, Kim & Chang
  • 1998-1999Judge, Seoul District Court, Southern Branch
  • 1995-1998Judge Advocate Officer, Korean Air Force
  • 1995Judicial Research and Training Institute, Supreme Court of Korea

Honors and Recognitions Close

  • 2019-2021Leading Lawyer in Intellectual Property Practice, Legal Times

Speaking Engagements and Publications Close

  • 2018Trademark Law Commentary (Co-author), Center for Law & Technology Edition (Pakyoungsa Publishing)
  • 2017Trade Secret Protection Law (Co-author), Korean Patent Law Society Edition (Pakyoungsa Publishing)
  • 2015Commentary on Employee’s Invention System (Co-author), Korean Patent Law Society Edition (Pakyoungsa Publishing)
  • 2014Study on Patent cases (Co-translator), Korean Patent Law Society Edition (Pakyoungsa Publishing)
  • 2012Study on Patent cases (Co-author), Korean Patent Law Society Edition (Pakyoungsa Publishing)
  • 2011Validity of Foreign Divorce Judgments, Presented at the 8th Ulsan Regional Lawyers Convention
  • 2011Interpretation of Scope of Protection for Invention with Limited Applications or Uses of Production Method in the Premise of Patent Claim, Law & Technology, Vol. 7. No. 1. (Seoul National University Center for Law & Technology)
  • 2011Overview of American Patent Litigation, Patent Litigation Research, Vol. 5. ( Patent Court of Korea)
  • 2011Legal Issues Arising From Misappropriated Application of a Patent, Law Journal, Vol. 22. No. 2. (Chungbuk National University Law Research Institute)

Bar Admissions & Qualifications Close

  • 1995Korea

Languages Close

Korean / English / Japanese