About

Provided by Yoon & Yang LLC

Yoon & Yang's IP Practice Group handles a wide range of matters relating to patents, trade secrets, copyright and trademark disputes and prosecution. Work flows from all of IP areas are increasingly consistent between 2023 and 2024.

 

The Practice Group also houses prominent attorneys including Wonil Kim, Dongju Kwon, all of whom are senior partners in the Group. The two senior partners are well reputed by the clients for their active involvement in patents (Wonil Kim, Dongju Kwon) and trade secret (Wonil Kim) matters.

 

For junior partners, it is noteworthy to highlight Keun Woo Lee, Sejung Lee and Chang Woo Lee. Keun Woo is involved in the Firm's most high-profile trade secret and copyrights litigations. Keun Woo also retains three major broadcasting companies in his clientele. Sejung Lee and Chang Woo Lee are both experts in patent and trade secret issues. Sejung, who was successfully chosen as a “40 Under 40 in Asia” by Asian Legal Business currently handles SK Innovation-LG Chem's trade secret dispute and Qualcomm's patent related litigation in South Korea, both of which are among the most high-profile cases in the Korean IP market.

 

From an industry perspective, Yoon & Yang strongly holds its position as an IT powerhouse for IP matters, and the firm retains Qualcomm, SK Innovation, SK Hynix as its long standing clients and this trend still continues in 2024.



Chambers Review

Provided by Chambers
Intellectual Property - South Korea
2
Band 2
What the team is known for

Yoon & Yang climbs in the rankings this year on the basis of its increasingly sophisticated practice and strong support for its litigation abilities, especially in the IT and pharmaceutical sectors. The team services a domestic and multinational client base in respect of patent, trade mark, trade secret misappropriation and copyright infringement disputes. It is frequently instructed on cross-border IP litigation and also experienced in handling cases involving issues of competition law. Its client roster includes the SK Group, W-Scope and Toyota.

Work Highlights

Provided by Yoon & Yang LLC
  • Yoon & Yang represented SK Chemicals in a patent infringement action brought by Novartis alleging SK Chemicals had infringed a patent relating to its Exelon Patch. The case addresses important issues relating to the territorial principle of patent rights and the retroactive validity of a patent with an extended term.

Notable Practitioners

Provided by Chambers
Wonil Kim
4
Wonil Kim
4
Band 4

Kim Wonil heads Yoon & Yang's IP practice group. He has particular expertise in advising on patent infringement, trade secret misappropriation and invalidation proceedings. He continues to serve a host of domestic and foreign clients in the pharmaceutical and technology sectors.

Ranked Lawyers at
Yoon & Yang LLC

Provided by Chambers
Filter by
Band

South Korea

Intellectual Property

Wonil Kim
4
Wonil Kim
4
Band 4

Members

Provided by Yoon & Yang LLC

Chang Woo Lee

Chulgun Lim

Dongju Kwon

Head of Department

Keun Woo Lee

Sejung Lee

Clients

Provided by Yoon & Yang LLC

Dyson Technology

E-mart

HITE Jinro

Hanmi Pharm

Hyundai Mobis

Kolon Life Science

Kumho Petrochemical

MedyTox

Merck Sharp & Dohme Corp.

Otis Elevator Company

REG Life Sciences

SK Chemicals

SK Innovation (SK ON)

SK Shipping

SK bioscience

SK hynix

Sumitomo Chemical

Toyota Motor Corporation

W-Scope

Yuhan Corporation