
Yoon & Lee’s IP practice is a leading name in the market for patent and trademark work thanks to its large team of patent attorneys and technical specialists. The firm is especially active in handling contentious patent matters in patent and law courts, and is also well versed in patent and trademark prosecution. Dong-yol Yoon, the founder and managing partner of the firm, is a market veteran who has established the firm as a key advisor to large companies. Sang-yong Lee leads on trademark and design, overseeing the full life cycle of proceedings. Byeong-ok Song oversees the mechatronics team, specialising in optics and semiconductors, and Ji-Man Park heads the telecoms team, acting on network systems and communications. At the helm of the standard essential patent team, Yong-won Lee handles patent matters in business models, semiconductors and mobile stations.
Legal 500 Editorial commentary
Testimonials
Collated independently by Legal 500 research team.
- 'The team offers the elite legal expertise we would expect from a top-tier firm, delivered through a modern, efficient, and collaborative model designed to provide partnership and tangible business value.'
Key clients
- Samsung Electronics
- Amore Pacific
- Naraenano-Tech Co. Ltd.
- Naeilhae Co. Ltd.
- Wavelink Co. Ltd.
- KMDP Co. Ltd.
- Handu Korea Co., Ltd.
- Trust & Communication Co., Ltd.
- Hon-ik Group
- Gachon University
- Security Zone, Co. Ltd.
- CardCam Co., Ltd.
Work highlights
Obtained a patent for Konako by advising the company on its proposed patent filing and then overcoming an office action.
Obtained a patent for Sun Kwang E&C by working closely with the client from the initial stage of conceiving the relevant idea of the invention.
Successfully registered a trademark for an individual client without office actions by advising on minor changes to the client’s proposed trademark.
Lawyers
Hall of Fame: PATMA
The lawyers at the very top of the profession, widely known and respected by peers and clients for their longstanding involvement in market-leading work.
Leading partners: PATMA
The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.
Practice head
Ji-man Park; Yong-won Lee; Byeong-ok; Sang-yong Lee; Dong-yol Yoon


