Yulchon LLC

Yulchon LLC is one of Korea’s leading full-service law firms. It has the highest success rate in the Korean Supreme Court and has been recognised by Korean law students as the preferred choice of employment and by Korean lawyers as the best workplace.

Yulchon employs over 480 professionals, including more than 60 foreign-licensed professionals. The firm’s perspective is international and its reach is global. Yulchon has represented clients from six continents and helped companies to expand around the globe.

Yulchon has been consistently recognised as a top-tier law firm in multiple areas, including tax, competition, corporate and M&A, and intellectual property. For example:

  • the IAM Patent 1000 has ranked the firm’s IP litigation and transaction practices as Tier 1;
  • Managing Intellectual Property ranked Yulchon as Tier 1 in its IP patent contentious category for seven consecutive years; and
  • Asian Legal Business ranked Yulchon as Tier 1 for patents for six consecutive years.

To further strengthen capabilities in outbound investments, Yulchon has opened offices in Jakarta, Moscow, Ho Chi Minh City, Hanoi, Shanghai and Yangon.

IP practice group

Yulchon’s IP practice listens to clients’ needs and focuses on their business strategies to provide tailored legal services relating to litigation, arbitration, licensing, negotiations, strategic counselling and compliance. The IP group is experienced in all aspects of intellectual property under Korean law, including patent and utility models, trademarks, designs, copyright, trade secrets, unfair competition, entertainment, privacy, Customs and international trade. The group’s expertise also covers the implementation of IP-related corporate programmes, including trade secrets compliance, employee inventions remuneration compliance, internal investigations for trade secrets misappropriation and forensic analysis to obtain tangible evidence. Further, the group is experienced in international IP dispute resolution management, including IP litigation, licensing and transactions, and freedom-to-operate opinions. Working in cooperation with Yulchon’s antitrust group, the IP group also provides clear guidance to clients on issues arising from the intersection of IP and antitrust law.

The IP group consists of legal professionals with experience and knowledge in all aspects of intellectual property, technology and various industries. These professionals include former judges, Korean Intellectual Property Office patent examiners and directors, government litigation attorneys, in-house counsel and engineers. The former judges served at the Patent Court, various district courts (including the Seoul Central District Court) and the IP division of the Seoul High Court. The group’s professionals have degrees in electrical engineering, mechanical engineering, chemical engineering, computer science, pharmacy, civil, urban and geo-systems engineering and naval architecture and oceanographic engineering. They work closely as a cohesive unit, focusing on communication within the group and with clients in order to gain an accurate understanding of clients’ needs and concerns.

Jeong Yeol Choe heads the firm’s IP practice group, and Hyeong Joo Lim co-heads the New Industry IP team – a sub-practice of the IP practice group. Mr Choe represented Samsung Electronics in its epic battle against Apple, and Mr Lim is experienced in implementing IP compliance programmes and conducting trade secrets misappropriation investigations. Da Woo Lee, a former Korean Patent Court judge, has a chemistry background and further strengthens the IP group’s litigation expertise and experience. Samuel Lee, a US-licensed partner, is experienced in patent licensing and international IP disputes, including US district court litigations and US International Trade Commission investigations. Kyung Ae Yoon has a PhD in pharmaceutical formations and is a former patent administrative law judge adjudicating invalidity litigations at the Korean Intellectual Property Trial and Appeal Board for pharmaceutical patents.

IP services

The IP group offers services in the following areas:

  • patents and utility models;
  • copyright (including computer programs);
  • trade secrets;
  • unfair competition;
  • entertainment (eg, celebrities, sports and movies);
  • IP risk management (eg, IP compliance and forensic analysis);
  • IP surveys and evaluation;
  • IP licensing and transactions;
  • international dispute management; and
  • protection of personal information.

Strategic alliance with YP Lee, Mock & Partners

Since February 2008, the IP group has formed a strategic alliance with YP Lee, Mock & Partners, one of the largest patent law firms in Korea. This enables Yulchon’s IP practice to utilise additional resources to efficiently and effectively handle litigation in all technical fields.


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Contact details

Yulchon LLC
Parnas Tower 38F
521 Teheran-ro
Seoul 06164
South Korea

Professional contacts

Other offices

  • Hanoi
  • Ho Chi Minh City
  • Jakarta
  • Moscow
  • Shanghai
  • Yangon

Sample client list

  • AmorePacific
  • Celltrion
  • Facebook
  • GSK
  • Golfzon
  • Hanmi
  • Hanwha
  • Hyundai
  • Samsung
  • Teledyne

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