
Patent Linkage System in Japan – Two Recent Court Decisions on Unfair Competition and Patent Linkage System
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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 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.
AIPLA/AIPPI・JAPAN Spring Meeting
Kenji Tosaki
Vision Center Tokyo Toranomon
2025 JPAA IP Practitioners Seminar
Masashi Chusho
New World Makati Hotel (Manila)
2024 TIPA International Symposium
Kenji Tosaki
National Taiwan University (NTU) / Online
AIPLA IP Practice in Japan Mid-Winter Program 2024
Kenji Tosaki
Osha Bergman Watanabe & Burton LLP
ADVANCE Corporate Law Seminar
Takahiro Yamauchi, Kenji Tosaki, Shunji Matsuda, Keiji Tonomura, Kei Nakajima, Masato Kumeuchi
Nagashima Ohno& Tsunematsu (Tokyo)
NO&T - Zhong Lun Joint Seminar
Keiji Tokujiya, Liu Yongyin (Zhong Lun law firm), Zhou Yongheng (Zhong Lun law firm)
Online (On-Demand)
Kenji Tosaki, Nozomi Kato (Co-author)
Kenji Tosaki, Masato Kumeuchi, Soichiro Unami (Co-author)
Kenji Tosaki, Takahiro Hatori, Nozomi Kato (Co-author)
(March 2025)
Kenji Tosaki, Masanori Tosu (Co-author)