Representative Cases

 

  

• Advised  a leading U.S. pharmaceutical company in preventing a generic launch under the patent linkage system for the first time in Korean history by obtaining a sales stay from the Ministry of Food & Drug Safety followed by favourable decisions both in the patent infringement and invalidation actions
• Advised  a leading U.S. pharmaceutical company in a case before the Supreme Court in which a selection invention patent was held valid for the first time in Korean history
• Advised  a leading European pharmaceutical company in a case before the Patent Court in which an in vivo profile patent was held valid for the first time in Korean history
• Advised  a leading European pharmaceutical company in a patent litigation resulting in the recapture of drug price for the first time in Korean history
• Advised  a leading U.S. pharmaceutical company in a patent litigation resulting in a preliminary injunction order, while a related patent correction trial was pending, for the first time in Korean history
• Advised  a leading U.S. pharmaceutical company in a case before the Supreme Court in which a second medicinal use invention was held valid for the first time in Korean history
• Advised  a leading U.S. pharmaceutical company in a case recognizing a generic company's liability for the price reduction of an original drug triggered by the generic's early entry into the market for the first time in Korean history
• Advised a leading U.S. pharmaceutical company in a patent litigation resulting in successfully obtaining a preliminary injunction for the first time in Korean history against a generic product with skinny labeling infringing a patent for a nonlabeled indication
• Advised a leading U.S. pharmaceutical company in patent litigations resulting in successfully obtaining both preliminary and permanent injunction orders based on vaccine patents for the first time in Korean history   
• Advised a leading U.S. pharmaceutical company in a case before the Patent Court in which a patent directed to the use of a pharmaceutical product was held valid for the first time in Korean history
• Advised a leading U.S. pharmaceutical company resulting in a successful defense of key patent assets while redefining the standard for a "qualitatively different effect" for the first time in Korean history
• Advised a leading U.S. pharmaceutical company resulting in a successful defense of key patent asset directed to vaccine technology for the first time in Korean history
• Advised a leading U.S. pharmaceutical company in a patent litigation in which damages were awarded for the infringement of a medicinal use patent for the first time in Korean history against dozens of generic companies
• Advised a leading German automobile manufacturer in a patent litigation resulting in a successful defense against claims of infringement by a Korean conglomerate eventually leading to market protection of key technology
• Advised a leading U.S. pharmaceutical company in a case before the Patent Court in which the scope of patent term extension was successfully determined for the first time in Korean history to cover the products of numerous generic pharmaceutical companies that are only different from the original product in salt form 
• Advised a leading U.S. internet search engine company in a patent litigation resulting in a successful defense against claims of infringement after prevailing in multiple related administrative actions invalidating the asserted patent and finding outside of patent scope
• Advised a leading U.S. pharmaceutical company in a patent litigation resulting in a successful defense of key patent asset eventually leading to the enforcement of preliminary injunction orders against multiple generic pharmaceutical companies
• Advised a leading U.S. pharmaceutical company in a patent litigation resulting in a successful enforcement of key patent asset wherein an exception to the principle of territoriality was recognized for the first time in Korean history for a complicated vaccine technology
• Advised a leading U.S. internet corporation in a series of large scale invalidation and opposition actions resulting in the issuance and retention of key patent assets and technology
• Advised a leading German electrical connection/automation company in a patent litigation wherein its patent was held valid and infringed, leading to successful worldwide settlement 
• Advised a leading European furniture fitting manufacturer in a patent litigation resulting in successful enforcement of core essential technology and defense of key patent assets
• Advised a leading European maritime equipment manufacturer resulting in a successful defense of key patent asset despite negative outcomes in other jurisdictions
• Advised a leading multinational tool manufacturing company in a series of patent infringement and invalidation actions resulting in market protection and retention of key patent assets
• Advised a leading Taiwanese multitechnology company resulting in a successful invalidation of a competitor key patent directed to threedimensional printers eventually leading to the client’s entry of market
• Advised a leading German automobile manufacturer before the Korea Automobile Testing & Research Institute in connection with extensive investigations of vehicular product safety and disputes arising therefrom
• Advised a leading European power generation company in a successful defense against product defect claims
• Advised a leading German automobile manufacturer before the Ministry of Land, Infrastructure and Transport in connection with various recalls of vehicles to promote the compliance and safety of automobiles released to the public
• Advised a leading European pharmaceutical company before the Ministry of Food and Drug Safety to successfully create regulatory guidelines specific for client's field for the first time in Korean history
• Advised a leading European pharmaceutical company resulting in a successful enforcement of a medicinal use patent and award of damages for the first time in Korean history
• Advised a leading German automobile manufacturer before the Ministry of Land, Infrastructure and Transport in connection with homologation of automobiles and parts as well as various disputes arising therefrom
• Advised a leading German automobile manufacturer before the Korea Automobile Testing & Research Institute in connection with extensive vehicle fire investigations and technical and legal disputes arising therefrom
• Advised a leading German automobile manufacturer before the police and Prosecutors' Office in connection with vehicle safety investigations and liability disputes arising therefrom
• Advised various multinational pharmaceutical and chemical companies in effectively responding to intellectual property related antitrust agency sector surveys and inquiries
• Advised various multinational pharmaceutical companies in the listing of key patent assets in the Green List of the Ministry of Food and Drug Safety

Awards

• Legal 500 Asia Pacific: Named as a leading partner for intellectual property law in Korea (2024-2026)
• Intellectual Asset Management (IAM) Strategy 300 Global Leaders: Named as one of the global leaders in intellectual property strategy (2026)
• Lexology Index Global Elite Thought Leaders: Named as a global elite thought leader for patent law in Korea (2024-2025)
• Asia Business Law Journal: Named in the A-List of Korea's Top 100 Lawyers (2024-2025)
• Lexology Index: Named as a sole recipient of Client Choice Awards – Intellectual Property – Patents (2024-2025)
• Asialaw Leading Lawyers: Named as a leading lawyer for intellectual property law in Korea (2024-2025)
• Lexology Index Thought Leaders Intellectual Property: Named as a thought leader for patent law in Korea (2024-2025)
• Intellectual Asset Management (IAM) Strategy 300: Named as one of the world's leading intellectual property strategists (2025)
• Lexology Index Intellectual Property: Named as a thought leader for patent law in Korea (2024-2025)
• Lexology Index South Korea: Named as a leading lawyer for intellectual property law in Korea (2025)
• Intellectual Asset Management (IAM) Patent 1000: Named as one of the world's leading patent professionals (2018-2025) 
• Asian Legal Business (ALB): Named as one of Korea's Super 30 Lawyers (2022-2023)
• Chambers Global: Named as a leading lawyer for intellectual property law in Korea (2019)
• Chambers Asia Pacific: Named as a leading lawyer for intellectual property law in Korea (2018)
• Lexology Index Investigations: Named as a leading lawyer for investigations in Korea (2025)
• Asialaw Awards: Named as a recipient of Client Choice Award – honourable mention lawyer – South Korea (2023)
• Who's Who Legal Intellectual Property: Named as a global leader for intellectual property law in Korea (2023-2024)
• Who's Who Legal South Korea: Named as a national leader for intellectual property law in Korea (2024)
• Lexology Index Intellectual Property: Named as a leading patent agent and attorney for intellectual property law in Korea (2025)
• Managing Intellectual Property (MIP) IP Stars: Recognized practitioner for intellectual property law in Korea (2018)
• Benchmark Litigation Asia Pacific: Recognized practitioner for intellectual property law in Korea (2018)
• Asian Legal Business (ALB): Recognized practitioner for intellectual property law in Korea (2016)
• Chambers Global: Recognized practitioner for intellectual property law in Korea (2015)
• Asialaw Profiles: Recognized practitioner for intellectual property law in Korea (2015, 2023-2024)
• Chambers Asia Pacific: Recognized practitioner for intellectual property law in Korea (2014, 2016, 2019)
• Legal 500 Asia Pacific: Named as a key lawyer for intellectual property law in Korea (2012-2026)
• Managing Intellectual Property (MIP): Recognized practitioner for intellectual property law in Korea (2012-2013)

Publications/Activities

• Patent Approval Linkage System (South Korea), Practical Law Global, Thomson Reuters (2023)
• Patent Protection for Life Sciences Inventions (South Korea), Practical Law Global, Thomson Reuters (2023)
• Why Did a South Korea Court Invoke the ‘Extraterritorial Activity' Exception in Prevenar 13 Case? Life Sciences Intellectual Property Review, Newton Media Ltd. (2023)
• Patent Scope Confirmation Trials (South Korea), Practical Law Global, Thomson Reuters (2023)
• Korean District Court Recognizes Infringement of Pfizer's Patent for Prevenar 13® Based on Extraterritorial Activity, Lexology, Law Business Research (2023)
• Trials for Patent Correction (South Korea), Practical Law Global, Thomson Reuters (2023)
• Pharmaceutical IP and Competition Law in South Korea: Overview, Practical Law Company, Thomson Reuters (2019)
• International Patent Litigation: A Country-by-Country Analysis, Republic of Korea, American Intellectual Property Law Association, Bloomberg Law (2018) 
• Drug Manufacturer Obtains First Damages Award for Infringement of Second Use Medical Patent, International Law Office, Globe Business Publishing Ltd. (2017) 
• First Damages Award for Infringement of Second Medical Use Patent, Lexology, Law Business Research (2017)
• Pfizer Gets First Generics Ban Under Korea Patent Linkage Law, Word Intellectual Property Report, Bloomberg BNA (2016) 
• Korean Supreme Court Upholds Validity of Pfizer's Patent, World Intellectual Property Report, Bloomberg BNA (2016) 
• Patent Act Amended to Implement Patent Law Treaty, Global Business Publishing, ILO Intellectual Property Newsletter (2015) 
• First Korean Court Finding of Infringement Against Generic Over Unlabeled Indication, World Intellectual Property Report, Bloomberg BNA (2014) 
• Erganzene Schuzzertifikate - Patent Term Extensions, Korean Chapter, Arne Markgraf, Nomos Verlagsgesellschaft Publishing Co. (2014) 
• Pfizer Obtains Preliminary Injunction in Korea Based on Unfinalized Patent Claims, World Intellectual Property Report, Bloomberg BNA (2013) 
• Preliminary Injunction Based on Unfinalized Claims, Global Law Watch, Bloomberg BNA International (2013) 
• Supreme Court Upholds Validity of Selection Invention Patent for First Time, International Law Office, Globe Business Publishing Ltd. (2012) 
• Supreme Court Upholds Selection Inventions for First Time (South Korea), Intellectual Asset Management, Globe White Page Ltd. (2012)
• Validity of Selection Invention Patent for First Time, Lexology, Law Business Research (2012)
• International Patent Litigation: A Country-by-Country Analysis, Republic of Korea, American Intellectual Property Law Association, Bloomberg BNA Books (2011) 
• Landmark Patent Decision Leads to First Recapture of Original Drug Price, World Intellectual Property Report, Bloomberg BNA (2011) 
• KTC Invalidates Patent for the First Time, Intellectual Asset Management, Globe White Page Ltd. (2011) 
• New Precedent: Commission Finds Patent Invalid for the First Time, International Law Office, Globe Business Publishing Ltd. (2011)
• Commission Finds Patent Invalid for First Time, Lexology, Law Business Research (2011)
• International Licensing, Korea Chapter, Intellectual Property, Bloomberg BNA International (2005-2009) 
• An Overview of the Korean Patent Litigation System, Intellectual Property Litigation, American Bar Association (2008) 
• Developments in Intellectual Property in South Korea, Asialaw IP Review, Asia Law & Practice, Legal Media Group (2008) 
• Speaker on the Topic of Employee-Inventor Compensation at the International Association of Korean Lawyers Seoul Conference (2007) 
• Globe White Page, World Trademark Law Report, The IP Media Group, Globe Business Publishing Ltd. (2006-2007) 
• Patent Issue: Specification and Claim Drafting Practices in Korea, Asia Law & Practice, IP Profiles, Legal Media Group (2006) 
• Working It Out, New Korean Laws Governing Work-For-Hire Inventions, Patent World, Informa Law & Business (2006) 
• A Review of Case Law Covering Step-Plus-Function Claims: Tips for the Patent Practitioner, New Matter, Volume 31, Issue 1 (2006) 
• Reasonable Compensation for Work-For-Hire Inventions, IP Value, Intellectual Asset Management (2005) 
• Korea: Reasonable Compensation for Work-For-Hire Inventions, Building & Enforcing IP Value, Intellectual Asset Management (2005) 
• Korea Chapter, World Trademark Review Yearbook, The IP Media Group, Globe Business Publishing Ltd. (2005) 
• Drug Data Given Strong Protection, Life Science Focus, Managing Intellectual Property, The Global IP Resource (2005) 
• Improved Access to Patent Documents, Managing Intellectual Property, The Global IP Resource (2005) 
• Recent Developments on IP Legislation in Korea, Asia Law & Practice, IP Profiles, Legal Media Group (2005) 
• Korea Revises Its Compulsory License Rules, Managing Intellectual Property, The Global IP Resource (2005) 
• Rule Change for Computer-Related Inventions, Managing Intellectual Property, The Global IP Resource (2005) 
• Free Trade Agreement Smoothes Singapore Patent Procedure, Managing Intellectual Property, The Global IP Resource (2005) 
• Burden Eased for Patent Restoration, Managing Intellectual Property, The Global IP Resource (2005) 
• Korea Readies for Patent Act Changes, Managing Intellectual Property, The Global IP Resource (2005) 
• Tackling the Pendency Problem, Managing Intellectual Property, The Global IP Resource (2005) 
• Hard Times Ahead for Counterfeiters: How Tough Legislation Aims to Foil the Counterfeiting Industry, Business Law News, Volume XXIV, Issue 2 (2003) 
• Speaker at the 10th Annual Law Practice event sponsored by Orange County Bar Association (2003) 
• Trade Secrets Practice in California, Continuing Education of the Bar - California, Updated Chapters 2, 3, 4 and 6 (1999-2003) 
• Case Comments: Report of U.S. Case Developments, New Matter, The State Bar of California (2000-2003) 
• Recording Confidential Communications, OCPLA Newsletter, Orange County Patent Law Association (2002) 
• Author's Rights On-Line: New York Times Co., Inc. v. Tasini, OCPLA Newsletter, Orange County Patent Law Association (2001) 
• The Retroactive Effect of Festo: Litton Systems, Inc. v. Honeywell, Inc., OCPLA Newsletter, Orange County Patent Law Association (2001) 
• The Effect of Utility Patents on Trade Dress Infringement, Orange County Lawyer, Orange County Bar Association (2000)