Contact Us

Intellectual Property Disputes

A wide range of legal services in the fields of technology, entertainment, and media, including Japanese and cross-border transactions and disputes

Intellectual Property Litigation - Japan

We have significant experience handling infringement cases regarding patents, trademarks, design rights, and copyrights, as well as litigation involving patent invalidation claims and employee inventions in Japan. With flexible team organization, we work on a wide range of large and small cases, in areas as diverse as electronics, optical equipment, semiconductors, telecommunications, information technology, pharmaceuticals, biological and life sciences, healthcare, and consumer goods.

Intellectual Property Litigation - Worldwide

With the globalization of corporate business activities, intellectual property disputes are often international in nature. Drawing on their experience in intellectual property litigation in Japan and knowledge and know-how obtained from training abroad, our lawyers are frequently involved in complex, multi-jurisdictional proceedings, working closely with other international law firms, with a view to achieving the best possible result for our client. With our overseas offices across Asia and our relationships with law firms around the world, we are well placed to handle the growing number of intellectual property disputes in Asia and the rest of the world. We have also been involved in cases brought before the International Court of Arbitration and other international bodies.

Intellectual Property Disputes：People

Intellectual Property Disputes：Newsletters

Sep. 27, 2023 TECH, IP AND TELECOMS LAW UPDATES: TECH, IP AND TELECOMS LAW UPDATES Vol.5 September 2023
Jul. 31, 2023 TECH, IP AND TELECOMS LAW UPDATES: TECH, IP AND TELECOMS LAW UPDATES Vol.4 July 2023
May 24, 2023 TECH, IP AND TELECOMS LAW UPDATES: TECH, IP AND TELECOMS LAW UPDATES Vol.3 May 2023

Intellectual Property Disputes：News

Apr. 20, 2023Awards: The Best Lawyers in Japan™ and Best Lawyers: Ones to Watch in Japan™ (2024 edition)
Jun. 27, 2018Awards: Firm ranks highly in Managing Intellectual Property's "IP Stars Handbook 2018"
Dec. 18, 2017Awards: Top rankings received in The Nikkei's "Corporate Legal Affairs and Lawyer Survey 2017"

Intellectual Property Disputes：Seminars

Sep. 7, 2023External Seminars: "IBA Conference 'Metaverse; Artificial Intelligence; and Web3.0 Technology' "
Oct. 31, 2022External Seminars: ”IBA Annual Conference Miami 2022 『Around the tables: a taste of hot topics in the Intellectual Property, Communications and Technology Section』”
Oct. 20, 2022External Seminars: "PROTECTING YOUR COMPANY'S IP: Risk-Management Strategies and Best Practice"
Jul. 20, 2022External Seminars: "Academia and Industry Patent Disputes in Japan"
Sep. 9, 2020External Seminars: "Global Developments in FRAND/SEP Litigation—China, EU, Japan and the US"

Intellectual Property Disputes：Publications

Magazine Article: "IP Case Bulletin: Patent Infringement and the Principle of Geographical Jurisdiction - DWANGO vs FC2 (Patent for Systems) Case (Appellate Instance), IP High Court Decision Dated May 26, 2023"
Magazine Article: "IP Case Bulletin: Patent Infringement and the Principle of Geographical Jurisdiction - DWANGO vs FC2 (Program Invention) Case (Appellate Instance), IP High Court Decision Dated July 20, 2022"
Magazine Article: "Patent Infringement and the Principle of Geographical Jurisdiction - FC2 Video Case, Tokyo District Court Decision Dated March 24, 2022"
Book Article: "The Technology Disputes Law Review 2nd Edition"