Jaehyun Ahn

Jaehyun Ahn

Senior Associate

Trademark, Design

Korean, English


T.+82 2 6405 0444

"True Veteran of Trademark and Design"

Jaehyun graduated with a full-time scholarship from Sungkyunkwan University with a B.A. in Public Administration. He further received his Master’s degree in the same field at Seoul National University and his Ph.D. in Intellectual Property Law at Chungnam National University. After passing the 31st Korea National Open Competitive Examination for Grade 5, Jaehyun has worked as an examiner, trial examiner, presiding trial judge and chief judge at the Korean Intellectual Property Office (KIPO) for 28 years. During these years, he has proven his outstanding expertise in trademark trials by handling more than 3,000 trials. Not only that, but Jaehyun has also acquired years of experience in various fields such as international cooperation and international application/patent grant. As the Chairman of World Intellectual Property Organization (WIPO)’s Program and Budget Committee, Jaehyun oversaw the international registration and protection of patents, designs, trademarks and copyrights for 2 years. Upon retirement from KIPO, Jaehyun worked as a professor of Kyung Hee University’s Intellectual Property Entrepreneurship Education Center for 3 and a half years, and joined PI IP Law as of February, 2020. Together with Daeho, Jaehyun currently supervises Trademark cases from application and registration to trial and appeal. Jaehyun specializes in trademark trials and has extensive experience regarding them. His doctoral thesis also regards trademark cancellation trials.


  • Senior Associate, PI IP LAW (2020 - Present)
  • Professor, Kyung Hee University (2016 - 2019)
  • Chief Administrative Judge, Korean Intellectual Property Tribunal (KIPT) (2013 - 2016)
  • Director-General, International Cooperation & Customer Support Bureau, Korean Intellectual Property Office (KIPO) (2010 - 2013)
  • Dean, International Intellectual Property Training Institute (IIPTI) (2010)
  • Administrative Judge, Korean Intellectual Property Tribunal (KIPT) (2007 - 2009)
  • Director, International Cooperation Division, Korean Intellectual Property Office (KIPO) (2004 - 2005)
  • Intellectual Property Attaché, Mission of the Republic of Korea in Geneva (2000 - 2003)
  • Senior Deputy Director, International Cooperation Division & Invention Promotion Division, Korean Intellectual Property Office (KIPO) (1996 - 1998)
  • Director, Information Planning Division, Korean Intellectual Property Office (KIPO) (1991 - 1994)
  • Deputy Director, Administration Office, Korean Intellectual Property Tribunal (KIPT) (1989 - 1991)


  • Director, Korean Society of the Intellectual Property Education & Research (2017)
  • Study on the Trial System for the Revocation of a Trademark Registration for Unjust Use or Non-use of a Trademark, Chungnam National University (2016)
  • Study on the Unitary Patent System and the Unified Patent Court in Europe (Intellectual Property Research Vol. 8 No. 2) (2013)
  • Revolution in the United States Patent System (Invention Patent, September, 2012)


  • Korean Patent Attorney
  • Korean Technology Transfer Agent
  • Intellectual Property Law, Queen Mary College, University of London