• Seoul National University; B.Sc., Chemistry
• Yonsei University (Industrial Graduate School); M.Sc., Chemical Engineering
• Kobe University (Graduate School of Law); LL.M., Intellectual Property Law

Patent, Utility Model, Trademark, Design, Prosecution, Search, Analysis, Strategy, Trials, Appeal Cases, Dispute Resolution, Consulting, Collaborative Work with ETHICS Law Office

Organic chemistry, Inorganic chemistry, Electrochemistry, Biochemistry, Agricultural chemistry, Nano materials, Green renewable energy, New materials engineering, Pharmaceuticals, Biotechnology, Cosmetics, Cosmetic composition, Trademark, Design

• 1975~1976      Aekyung Industrial Co., Ltd.
• 1976~1982      AmorePacific Corporation
• 1989~2017      Representative, YOON & LEE International Patent & Law Firm
• 1992~1996      Lecturer, Graduate School of Industry, Yonsei University
• 2009~2012      President of the Korean Regional Group of the Asian Patent                                                  Attorneys Association (APAA)
• 2012~2014      President of the Korean Patent Attorneys Association (KPAA)
• 2015~2019      President of Intellectual Property Forum (IPForum)
• 2017~Current  Chief Executive Partner, YOON & LEE International Patent & Law Firm, LLC.

Patent Attorney, Republic of Korea

• Korean Patent Attorneys Association (KPAA) 
• Asian Patent Attorneys Association (APAA)
• Association Internationale pour la Protection de la Propriete Industrielle (AIPPI)
• Intellectual Property Forum (IPForum)

• Patent Law, 1984
• Korean Translation of "Chemical Patent Practice" written by John L. White, 1991
• Doctrine of Equivalents and Identity of Invention in Patent Infringement Suit, 1998

• Bronze Tower Order of Industrial Service Merit, 2016

• Korean, English, Japanese