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IP Disputes

We handle a wide variety of disputes and provide pre-dispute advice. Our successful litigation and settlement practice spans all areas of intellectual property law, with particular emphasis on contentious work in the fields of not only patents and utility models, but also trademarks, design rights, copyrights, passing-off and other violations of the Act on Prevention of Unfair Competition. We also have ample experience in employee invention compensation cases. Our lawyers, including former judges of the Intellectual Property High Court and lawyers with technical backgrounds, who are familiar with both law and technology, pour their energy and skill into resolving the disputes, bringing fruitful results in many leading cases.

Many of our lawyers, who are fluent in English and German, have substantial experience with IP litigation and arbitration not only in Japan but also in the United States and other leading commercial jurisdictions. This breadth of exposure forms the basis of a cross-border window, which we think is unique in Japan: the ability to provide foreign clients with familiar context and reference points in making key litigation decisions.


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Related Seminars

February 14, 2020


Japan Patent Office: Strategies and Global Solutions Using International Arbitration and Mediation for Intellectual Property Disputes on SEP Licensing and FRAND (Panel Discussion)

Yoshimi Ohara 

September 20, 2019

NO&T Seminars

"Transboundary Innovation and Law"

Kenji Tosaki, Soichiro Fujiwara, Keiji Tonomura 

June 13, 2019

NO&T Seminars

US Patent Practice Seminar
"US Patent Litigation - What's Hot and What's Not"

Kenji Tosaki, Hironobu Tsukamoto 

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Related Publications

July, 2021


The Legal 500: 5th Edition Intellectual Property Country Comparative Guide - Japan

The Legal 500 (online)

Kenji Tosaki 

October, 2020


The International Comparative Legal Guide to: Copyright 2021 - Chapter 9 Japan

Kenji Tosaki 

June, 2020


The Legal 500: 4th Edition Intellectual Property Country Comparative Guide - Japan

The Legal 500 (online)

Kenji Tosaki 

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May 18, 2021


NO&T receives high evaluation in ALB Asia IP Rankings 2021

April 15, 2021


High evaluation received in the 2022 Edition of "The Best Lawyers in Japan"

February 18, 2021


NO&T recognized by Chambers Global 2021

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