Firm Profile > Yoon & Lee > Seoul, South Korea

Yoon & Lee
3RD FL. ACE HIGHEND TOWER-5
3RD FL. 226, GASAN DIGITAL 1-RO, GEUMCHEON-GU
SEOUL 08502
South Korea

Intellectual property: local firms Tier 3

Mid-sized IP boutique Yoon & Lee provides a comprehensive range of services regarding both the management and enforcement of IP rights. With a high number of patent attorneys on its bench, the team is particularly well-known for successful patent prosecution. Trade marks are another area of specialist expertise with key practitioner Sang-yong Lee particularly noted on this front. Lee heads up the offering, alongside Ji-man Park, Yong-won Lee, Byeong-ok Song and recently made-up partner Seong-hwan Park (promoted in January 2019). The firm most often acts for clients active in the electronics, pharmaceuticals, cosmetics, as well as mechanical and mechatronics sectors.

Practice head(s):

Ji-Man Park; Yong-Won Lee; Byeong-Ok Song; Sang-Yong Lee; Mr. Seong-Hwan Park

Key clients

Naraenano-Tech Co. Ltd.

Naeilhae Co. Ltd.

Wavelink Co. Ltd.

KMDP Co. Ltd.

Bandyco Co. Ltd.

Chrio Korea Co. Ltd.

Handu Korea Co., Ltd.

Trust & Communication Co., Ltd.

Homyung Eng. Co. Ltd.

The firm
Yoon & Lee was founded in 1989 by Mr. Dong-yol Yoon, one of the leading figures in the Korean IP sector and a former head of the Korean Patent Attorneys Association. The firm grew rapidly after gaining a strong reputation for patent filing, prosecution, and registration both in Korea and overseas, especially in the electronics, software, mechanical, pharmaceuticals, cosmetics, and biochemical sectors. Recently we have been strengthening our trademark and design sector led by Mr. Sang-yong Lee, a former trademark examiner at the Korea Intellectual Property Office (KIPO). In April 2017, the firm converted to a limited company with the senior partners becoming the owners of the company. The new structure provides a better structure for long-term growth by enabling clients to have greater trust and confidence in the firm’s stability.

Yoon & Lee has a wide range of clients in terms of geographical distribution and industrial sector and also ranging from established global operations to small and medium sized enterprises. The firm’s philosophy is to create strong trust-based relationships as reflected in the near 30-year long relationships developed with major Korean companies. We believe that honesty and a reputation for excellent work leads to satisfaction for its clients and a good reputation for the firm.

In particular, we are well-known for the high percentage of patent attorneys and technical specialists in comparison with general law firms and other patent law firms in Korea, which allows us to offer an efficient and effective combination of patent attorneys, former KIPO examiners, foreign attorneys, and technical advisors with advanced degrees.

Areas of practice
Yoon & Lee’s services cover all aspects of intellectual property rights (IP), for example filing, registration and litigation for patents and utility models (including appeal cases before the Patent Court) and trademark and design applications, copyright protection, licensing agreements and assignments, and technology valuation and transfer services.

For patents, the firm provides effective and efficient services for domestic and international patent rights, especially in high technology fields such as electrical engineering, electronics, telecommunications, machinery, chemistry, biotechnology, pharmaceuticals, and life sciences. The electronic & software and telecommunications sectors are overseen by Mr. Ji-man Park and Mr. Yong-won Lee. Mr. Park has an excellent reputation for his technical and legal knowledge and has advised major companies and the courts on technical issues and IP rights, while Mr. Lee has over 10 years’ experience as a patent attorney and is proficient in 3GPP LTE & LTE-A and 5G communication standards. Machinery sector cases are handled by Mr. Byeong-ok Song, who has an MS in physics, an LLM from Washington University (USA), and over 26 years’ experience as a patent attorney. As well as being managing partner, Mr. Dong-yol Yoon also heads the chemical and biochemical sectors.

The trademark and design team includes a licensed US attorney as well as an ex-KIPO trademark examiner and acts for businesses in all market sectors from established global organizations to small and medium sized enterprises and a globally expanding franchise operation. It is building a growing overseas reputation and handles trademark filings and registrations from clients in the USA, China, Japan, the EU, South America, and Southeast Asia as well as local Korean clients.

Department Name Email Telephone
Patent and utility model registration and prosecution Dong-yol Yoon
Patent and utility model registration and prosecution Ji-man Park
Patent and utility model invalidation, infringement, and litigation Dong-yol Yoon
Patent and utility model invalidation, infringement, and litigation Ji-man Park
Patent/utility model - Electronics & Software Ji-man Park
Patent/utility model - Electronics & Software Yong-won Lee
Patent/utility model - Chemical & Biochemical Dong-yol Yoon
Patent/utility model - Mechanical & Mechatronics Ji-man Park
Patent/utility model - Mechanical & Mechatronics Byeong-ok Song
Trademark filing and prosecution Sang-yong Lee
Trademark filing and prosecution Jaewon Yoon
Trademark infringement and litigation Sang-yong Lee
Trademark infringement and litigation Jaewon Yoon
Copyright protection Sang-yong Lee
Copyright protection Jaewon Yoon
Design filing and prosecution Sang-yong Lee
Design filing and prosecution Jaewon Yoon
Unfair competition and anti-counterfeit measures Dong-yol Yoon
Unfair competition and anti-counterfeit measures Ji-man Park
Licensing agreements and assignments Dong-yol Yoon
Licensing agreements and assignments Ji-man Park
Technology transfer and valuation Dong-yol Yoon
Technology transfer and valuation Ji-man Park
Consultation on establishment and protection of IP rights Dong-yol Yoon
Consultation on establishment and protection of IP rights Ji-man Park
Photo Name Position Profile
Mr Sang-yong Lee  photo Mr Sang-yong Lee Partner Patent Attorney
Mr Yong-won Lee  photo Mr Yong-won Lee Partner Patent Attorny
Mr Ji-man Park  photo Mr Ji-man Park Partner Patent Attorney
Mr Byeong-ok Song  photo Mr Byeong-ok Song Partner Patent Attorny
Mr Dong-yol Yoon  photo Mr Dong-yol Yoon Managing Partner
Ms Jaewon Yoon  photo Ms Jaewon Yoon Associate
Korean
English
Japanese
Chinese
World Intellectual Property Association of Korean Practitioners
Asian Patent Attorney Association (APAA)
Fédération Internationale des Conseils en Propriété Intellectuelle (FICPI)
LES (Licensing Executives Society)
INTA - International Trademark Association

List of Yoon & Lee’s key clients:

  • Samsung Electronics Co., Ltd.
  • AmorePacific Corporation
  • Boryung Pharmaceutical Co., Ltd.
  • Sony Interactive Entertainment Inc.
  • Korea Electronics Technology Institute
  • Murata Manufacturing Co., Ltd.
  • Adeka Corporation
  • Nippon Steel Chemical & Material Co., Ltd.
  • French Alternative Energies and Atomic Energy Commission (CEA)
  • Mekra Lang GmbH & Co. KG

INTELLECTUAL PROPERTY (LOCAL FIRMS)

YOON & LEE provides a comprehensive range of services for intellectual property (IP) rights, including patents and trademarks, as well as consultation services for the management and enforcement of IP rights. The firm was founded in 1989, became a limited liability company in April 2017, and provides distinctive and specialized services for domestic and foreign clients.

We are able to offer IP services optimized for the benefit of our clients through close cooperation and teamwork that maximizes the high levels of expertise and experience of our staff of 75 (30 foreign and domestic patent attorneys and lawyers). We are well-known for the high percentage of patent attorneys and technical specialists in comparison with general law firms and other patent law firms in Korea. In particular, we offer an efficient and effective combination of patent attorneys, former KIPO examiners, foreign attorneys, and technical advisors with advanced degrees (PhD and other post-graduate qualifications) in their specialist subjects, such as electrical engineering, computer science, and biotechnology.

Our main values are sincerity, reliability, and harmony, which are reflected in our work practices. First, all staff members strive to increase their professionalism and work skills so that they are able to meet the ever changing technological advances as well as developments in the laws, policies, and legal cases in various jurisdictions. Second, we provide quick, accurate, and specialized services to satisfy our clients’ requests while solidifying trust and establishing long-term client relationships. Third, all our staff cooperate and work together actively to provide comprehensive services that benefit from their combined experience and skills.