About

Provided by Yoon & Yang LLC

Recent developments

 

In March 2023, the practice group hired Geonyoung Koh, a Korean attorney and former prosecutor as a partner in its IP practice area. Mr. Geonyoung Koh previously worked for eight years as a software engineer at the largest IT companies such as Pantech & Curitel and NHN Corporation before starting his prosecutor career. While working as a software engineer, he had an experience in developing search engine program. As a prosecutor, he also worked at cyber crime investigation department, the industrial technology crime investigation department and his main cases include cryptocurrency theft, hydrogen fuel cell technology leakage and OLED cleaning equipment technology leakage case.

 

In 2022, the firm recruited Kyu Woong Cho, a renowned technology, IP lawyer. While his tenure at the Korea’s prosecution office, he obtained expert knowledge in investigations of cyber-crime, leakage of technologies including trade secrets and intellectual properties. Before starting his legal career, he worked for Samsung SDI for ten years at its Central Research Center, Patent Strategy Team and Strategic Planning Team, during which he built first-hand experience in the energy industry including secondary cells. In particular, he has 37 patents registered in his name in Korea and abroad, including 12 U.S. patents in the sectors of secondary cells and fuel cells.

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

Changkwon Kim

Chulgun Lim

Dong Hee Kang

Dongju Kwon

Head of Department

Hong Seok Choi

Sejung Lee

Yoon Sun Kim

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