Our Professionals
Managing Partners

Patent Attorney Hoon-Tae Jin
- M.S. in Computer Information and Communication Engineering, Korea University
- Regular Member, Korean Patent Attorneys Association (KPAA)
- Former Secretary-General, KPAA
- Former Executive Director, KPAA
- Former Delegate, KPAA General Assembly
- Former Member, KPAA Election Commission
- Former Government R&D Project Evaluation Committee Member
- Managing Partner, DOOCHANG IP Law Office (Present)

Patent Attorney Eun-Jung Hong
- B.S. in Biology, Korea University
- Regular Member, Korean Patent Attorneys Association (KPAA)
- Former Patent Attorney (Biotechnology/Chemistry), Wone International Patent Law Firm
- Former Patent Attorney (Chemistry/Trademarks), CHA Joint Patent Law Office
- Former Patent Attorney (Biotechnology/Trademarks), Barun International Patent Law Office
- Managing Partner, DOOCHANG IP Law Office (Present)
Of-Counsel Patent Attorneys

Patent Attorney Young-Hoi Ko
- B.S. in Architecture, Seoul National University
- Ph.D. coursework in Architecture, Seoul National University
- Licensed Professional Engineer (Construction Engineering)
- Licensed Professional Engineer (Building Mechanical Facilities)
- Former Vice President, Korean Patent Attorneys Association (KPAA)
- Former Delegate, KPAA General Assembly
- Former President, KPAA
- Court-Appointed Expert Advisor (Present)
- Criminal Conciliation Commissioner, Seoul Central District Prosecutors’ Office (Present)
- Managing Partner, SungChang Patent Law Office (Present)

Patent Attorney Il-Gon Kim
- B.S. in Aerospace Engineering, Seoul National University
- Regular Member, Korean Patent Attorneys Association (KPAA)
- Former Engineer, Korean Air
- Patent Attorney, SungChang Patent Law Office (Present)
Of-Counsel Attorneys

Attorney Yeon-Seok Choi
- LL.B., Pusan National University
- J.D., Jeju National University Law School
- Ph.D., Jeju National University Graduate School (Law)
- Former Attorney, Jinwoo Law Firm
- Former Public Defender, Suwon District Court Ansan Branch
- Former Court-Appointed Defense Counsel, Seoul District Court
- Former Court-Appointed Defense Counsel, Seoul High Court
- Former Court-Appointed Defense Counsel, Supreme Court of Korea
- Attorney, Daejin Law Firm (Present)
Technical & Business Directors

Technical Director Woon-Sung Hong
- B.S. in Mechanical Engineering, Konkuk University
- Licensed Professional Engineer (Fire Protection Engineering)
- Member, Central Fire Protection Technical Deliberation Committee, National Fire Agency
- Former Design Division, Hanbaek FNC
- Former Nuclear Power Division, Korea Electric Power Corporation (KEPCO) Engineering
- Former Plant Division, Hyundai Heavy Industries

Technical Director Ok-Joo Jin
- M.A. in Architectural Fine Arts, Chung-Ang University
- Senior Professional Engineer (Architectural Design & Construction)
- Former Architect, Kunwon International Architects & Engineers
- Former Architect, DST Architects & Engineers
- Former Architect, Nowdongin Architects & Engineers
- Former Architect, Heerim Architects & Planners

Business Director Sung-Bae Ham
- B.A. in Industrial Information, Chung-Ang University
- Former Sales Director, MTM Communications
- Former Team Leader, Fresh Communications
- Former Executive Director, Cyclone Entertainment
- Former Managing Director, J&H Film
- Former Professor, Department of Management, Namyejong College of Arts & Practical Studies
- Former Deputy Director of Public Relations, Integrity Korea (NGO)

International Business Director Don-Man Choi
- B.A. in Business Administration, Chung-Ang University
- Former Planning Division, InterContinental Hotel
- Former Managing Director, Sewon Antique
- Former Managing Director, StartupCook Franchise
- Former Procurement Director, Eugene Krebs (Vietnam)
Technical Advisors

Technical Advisor Sang-Cheon Yoon
- B.S. in Mechanical Engineering, Kyung Hee University
- M.S. in Automatic Control, Kyung Hee University
- Ph.D. coursework in Automatic Control, Kyung Hee University
- Director, T2L Logistics Research Institute (Present)