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

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Intellectual Property Disputes:Newsletters

TECH, IP AND TELECOMS LAW UPDATES
TECH, IP AND TELECOMS LAW UPDATES Vol.9 May 2024
TECH, IP AND TELECOMS LAW UPDATES
TECH, IP AND TELECOMS LAW UPDATES Vol.8 March 2024
TECH, IP AND TELECOMS LAW UPDATES
TECH, IP AND TELECOMS LAW UPDATES Vol.7, January 2024
TECH, IP AND TELECOMS LAW UPDATES
TECH, IP AND TELECOMS LAW UPDATES Vol.6, November 2023
TECH, IP AND TELECOMS LAW UPDATES
TECH, IP AND TELECOMS LAW UPDATES Vol.5 September 2023

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Intellectual Property Disputes:News

Awards
The Best Lawyers in Japan™ and Best Lawyers: Ones to Watch in Japan™ (2025 edition)
Awards
Yoshinori Tatsuno listed in "Litigators of Asia 2023" by ALB
Awards
The Best Lawyers in Japan™ and Best Lawyers: Ones to Watch in Japan™ (2024 edition)
Awards
Firm ranks highly in Managing Intellectual Property's "IP Stars Handbook 2018"

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Intellectual Property Disputes:Seminars

Oct. 17, 2023 - Oct. 19, 2023External Seminars
"Judicial Symposium on Intellectual Property/TOKYO2023-JSIP2023~IP Dispute Resolution in Asia~"
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"

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Intellectual Property Disputes:Publications

Book Article
"IP Case Bulletin: Protection of Product Form under Article 2, Paragraph 1, Item 1 of the Unfair Competition Prevention Law - Dr. Martens Case (Appellate Instance), IP High Court Decision Dated November 9, 2023"
Book Article
"In-Depth: Technology Disputes 3rd Edition"
Article
"The Concept of Technical Prejudice in Patent Law (Collected Papers Commemorating the 70th Birthday of Professor Misao Shimizu: 'The Future of Diversified Intellectual Property Rights Litigation')"
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"

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