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Kim & Chang

Intellectual Property: Patent Specialists

Asia-Pacific Guide 2026 : South Korea

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Kim & Chang

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About

Provided by Kim & Chang

In Korea’s fast-paced and constantly evolving business environment, Kim & Chang’s Intellectual Property (IP) Practice is uniquely qualified to provide comprehensive, high-quality and cost-effective legal services to our clients.

Our IP Practice is the largest in Korea, comprising more than 400 professionals, including IP litigators, patent attorneys, and foreign IP attorneys, as well as over 600 patent engineers, trademark paralegals and support staff. Our Practice personnel work together to provide a full range of services including in relation to patent, trademark, design, copyright, unfair competition, e-commerce, trade secrets, computer, and Internet law expertise in the areas of litigation, enforcement, dispute resolution, licensing, prosecution, transactions, due diligence, audits, asset management and general counseling.

This depth of experience makes Kim & Chang’s IP Practice the leading provider of IP services in Korea.

Key Practices:

  • Trade Secret & Corporate Information Protection
  • Industrial Security and Export Control
  • Border Measures
  • Copyright
  • Design
  • Employee Invention
  • Intellectual Property Dispute
  • International IP Disputes
  • International IP Prosecution
  • IP Administrative Action & Appeal
  • IP Counseling, Portfolio Management & Strategy
  • IP Due Diligence, Licensing & IP Transactions
  • Patent & Utility Model
  • Trade Secret & Corporate Information Protection
  • Trademark
  • Unfair Competition

Chambers Review

Provided by Chambers

Intellectual Property: Patent Specialists - South Korea

Band 1

What the Team is Known For

Kim & Chang's intellectual property group is market-leading and regularly acts for well-known multinational corporations in high-value litigation before all levels of court. The team handles the full gamut of contentious IP work, including patent, trade mark and copyright disputes. The firm houses a substantial group of foreign lawyers who provide analysis on overseas matters and are licensed to practice in a variety of key jurisdictions. It offers a high level of technical expertise, with a substantial number of IP lawyers alongside a sizeable group of patent scientists and support members. The law firm also offers full patent prosecution services.

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Work Highlights

Provided by Chambers

  • Kim & Chang represented RaQualia Pharma and HK inno.N Corporation in defending against 213 scope confirmation actions filed by nearly 70 Korean generics challenging RaQualia's KR compound patent covering an acid blocker used for gastric acid inhibition.

Strengths

Provided by Chambers

  • They have a large team of high-quality lawyers who think deeply about the most beneficial ways to help the client.

    Intellectual Property: Patent Specialists respondentAsia-Pacific

  • Kim & Chang has a deep understanding of patent rules, practice trends and the business needs of clients.

    Intellectual Property: Patent Specialists respondentAsia-Pacific

Notable Practitioners

Provided by Chambers

  • Jay (Young-June) Yang
    Jay (Young-June) Yang

    Jay (Young-June) Yang

    Jay Yang (Yang Young-June) heads Kim & Chang's intellectual property legal team and maintains a highly respected position in the market, with a career spanning over three decades. His expertise covers copyright, trade mark and patent mandates.

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  • Young KIM
    Young KIM

    Young KIM

    Kim Young draws on over 30 years' experience advising on IP matters, particularly in relation to patents. She has notable expertise in mandates relating to the pharmaceutical and chemical sectors.

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  • Duck Soon Chang
    Duck Soon Chang

    Duck Soon Chang

    Chang Duck Soon is a highly experienced lawyer and continues to act in impressive contentious cases. He offers particular expertise in copyright disputes and patent infringement matters and brings to bear valuable experience gained during his time as a former adviser to the Korea Trade Commission on IP-related policies.

    • In the final decision-making stage, he spared no effort to support us in both material and emotional ways so that the case could be resolved with the best quality within the budget.

      Intellectual Property: Patent Specialists respondentAsia-Pacific
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  • Sang-Wook Han
    Sang-Wook Han

    Sang-Wook Han

    Han Sang-Wook focuses his practice on domestic and cross-border litigious mandates and offers extensive expertise in cases involving trade mark and patent infringement.

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  • Seong-Soo Park
    Seong-Soo Park

    Seong-Soo Park

    Park Seong-Soo maintains a notable practice in the IP sphere. He has experience advising on patent, copyright and trade secret matters.

    • Park Seong-Soo provides well-balanced advice which helps us understand how the court might respond and what we need to prepare. He also offers well-structured strategic guidance accordingly.

      Intellectual Property: Patent Specialists respondentAsia-Pacific
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  • Yu-Seog Won
    Yu-Seog Won

    Yu-Seog Won

    Won Yu-Seog is recognised for his high-profile activity representing important domestic and international clients in IP infringement disputes. He brings to bear experience gained during his time as a judge in the Patent Court of Korea to offer particular expertise in patent cases.

    • Won Yu-Seog shows excellence in his IP expertise.

      Intellectual Property: Patent Specialists respondentAsia-Pacific
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  • Minjung Park
    Minjung Park

    Minjung Park

    Park Minjung often represents both domestic and international clients in IP disputes, with clients benefiting from her experience as a former Patent Court judge.

    • Park Minjung thinks about various aspects from the client's point of view, and has strengths in domestic litigation.

      Intellectual Property: Patent Specialists respondentAsia-Pacific
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  • Cheonwoo Son
    Cheonwoo Son

    Cheonwoo Son

    Son Cheonwoo represents clients in the technology sector and pharmaceutical industry in intellectual property disputes such as those relating to patent and trade secrets.

    • He has a very strong knowledge of IP, and has developed a successful litigation strategy based on his years of experience in court.

      Intellectual Property: Patent Specialists respondentAsia-Pacific

    • He has an excellent ability to organise complex problems and research to find new perspectives.

      Intellectual Property: Patent Specialists respondentAsia-Pacific
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  • Chun Y. YANG
    Chun Y. YANG

    Chun Y. YANG

    Yang Chun is a senior foreign attorney whose expertise is often sought after by international clients in various industries including gaming.

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  • John J. Kim
    John J. Kim

    John J. Kim

    John Kim is a foreign attorney who is admitted to the California State Bar and registered to practice before the US Patent and Trademark Office.

    • John is an experienced patent lawyer in the pharmaceutical space. He is able to handle matters efficiently with very little instruction.

      Intellectual Property: Patent Specialists respondentAsia-Pacific
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Ranked Individuals at Kim & Chang (10)

South Korea

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