Yoon & Yang LLC
Client SatisfactionLed by Dongju Kwon, the IP practice group at Yoon & Yang LLC frequently handles matters concerning patents, copyright, trademark disputes, trade secrets, and infringement cases. The practice has been strengthened by the arrival of Geonyoung Koh and Kyu Woong Cho, both of whom joined in early 2023 from the Suwon District Prosecutors' Office. Other notable members of the team include Changkwon Kim, Chang Woo Lee, and Sejung Lee.
Legal 500 Editorial commentary
Testimonials
Collated independently by Legal 500 research team.
- 'Yoon & Yang is one of the major law firms in Korea. The size of the team is somewhat smaller than that of other large law firms, but it has the advantage of having excellent individual skills and charging reasonable costs.'
Key clients
- SK Innovation (SK ON)
- Merck Sharp & Dohme Corp.
- W-Scope
- SK hynix
- SK bioscience
- SK Chemicals
- Hanmi Pharm
- Kolon Life Science
- MedyTox
- Kumho Petrochemical
- SK Shipping
- Hyundai Mobis
- Otis Elevator Company
- Sumitomo Chemical
- Toyota Motor Corporation
- Dyson Technology
- REG Life Sciences
- HITE Jinro
- E-mart
- Yuhan Corporation
Work highlights
- Representing SK On in a high-profile trade secret & patent infringement dispute between LG Energy Solution and SK On.
- Successfully defended W-Scope against Asahi Kasei Korea in a patent infringement lawsuit in Korea regarding rechargeable battery separator.
- Representing SK Chemicals in a patent infringement lawsuit in Korea against Novartis regarding Exleon Patch.
Practice head
The lawyer(s) leading their teams.
Dongju Kwon