Nagashima Ohno & Tsunematsu
We are only able to display limited information for this firm. We display more complete information for all of the following firms:
The team at Nagashima Ohno & Tsunematsu handles both IP litigation and transactional matters, including due diligence, licensing, and R&D agreements, with a focus on tech areas like AI and big data. Shunji Matsuda leverages his extensive experience with the Japanese government and public sector agencies to advise clients on IP litigation, while Kenji Tosaki is well-versed in pharma-related IP disputes. Keiji Tonomura has deep expertise in domestic and cross-border IP and IT transactions, including data security and privacy. Atsushi Yamaguchi was promoted to partner in January 2024.
Legal 500 Editorial commentary
Testimonials
Collated independently by Legal 500 research team.
'Nagashima Ohno & Tsunematsu has a high reputation in Japan. It has a large number of IP attorneys with rich experience in a variety of IP matters. They not only have the capacity to handle big international cases but also can provide high-quality assistance to clients. Furthermore, most of the team members are fluent in English and have great communication skills.'
- 'Mr. Shunji Matsuda's thoughtful advice from both a legal and business point of view helps the team to make the right decisions in proceedings. He is an excellent communicator who can quickly identify central issues in each aspect of the proceedings and suggest a practical solution.'
Key clients
- Nintendo Co., Ltd.
- Nichia Corporation
Work highlights
Advised Nintendo in an IP litigation matter in Japan, where Nintendo filed a lawsuit against Maricar Inc. concerning the protection of famous characters.