Kwanghoon Yoon


Civil Litigation, Commercial Matters, Intellectual Property, Construction & Real Estates


Kwanghoon Yoon is a lawyer at Chaeum Attorneys at Law, who specializes in the areas of general corporate matters, civil litigation, construction & real estates as well as intellectual property including patents, trademarks, copyrights, unfair competition, trade secrets, product liability and compensation for inventions. Prior to joining Chaeum in 2016, he worked as a lawyer at Yulchon and Lee & Ko. Mr. Yoon graduated from Choongnam National University Law School in 2012 and also holds a B.S. in Electrical Engineering from KAIST (Korea Advanced Institute of Science and Technology).

areas of practice

Corporate, Civil Litigation, Intellectual Property, Public Procurement, Construction & Real Estate

work experience

– Chaeum Attorneys at Law (Former Hansung Attorneys at Law prior to incorporation) (2016-Present)
– Lee & Ko LLC (2014-2015)
– Yulchon LLC (2012-2013)
– Park Systems(Electrical Engineer) (2004-2006)

Academic background

  • Kyonggi Science High School (2001)
  • KAIST – B.S.(Electrical Engineering) (2008)
  • Choongnam National University Law School (2012)
  • Seoul National University – Ph. D. Candidate in Law (2016-2020)

Notable cases

Trade Secret
– Misappropriation case on manufacturing process and technology of confectionery
– Misappropriation case on manufacturing process and technology of automobile components

– Copyright infringement case on commercial message
– Copyright infringement case on SI software
– Dispute on copyright infringement and breach of license agreement

IP Compliance
– Developing compliance solution regarding employee invention and remuneration system
– Developing compliance solution regarding copyright and software license

– U.S and Japanese patent dispute on CCD (Charge Coupled Device)
– Patent infringement case on laser printer OPC drum

Public Procurement
– Administrative litigation for defense industry company on Restrictions on Qualification for Participation
– Administrative litigation for telecommunication device manufacturer on Restrictions on Participation in National Research and Development Projects
– Disposal litigation to confirm contractor’s status, Disposal litigation to prohibit the procedure of bidding, etc.


– Admitted to bar, Korea(2012)
– Admitted to the Korean Patent bar, Korea (2013)


– Korean
– Japanese
– English

Return to List