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.
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'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.'
- 'Their practice is really solid in the Asian region. They have a great team with deep industry knowledge, extensive experience, and a client-centric approach. Their key capabilities include strategic advisory, technology integration, and a collaborative working style that ensures comprehensive support.'
‘They have experience in IP litigation in many countries including the U.S., Europe, Asia including China, Australia, and Brazil, in addition to their home country of Japan. They are one of the most reliable IP teams in Tokyo.'
Kernmandanten
- Nintendo Co., Ltd.
- Nichia Corporation
- Isuzu Motors Limited
- Nippon Steel Engineering Co., Ltd.
- Mitsubishi Chemical Corporation
- X Corp. (Twitter Inc.)
- Kadokawa Corporation
- Bushiroad Inc.
- MonotaRo Co., Ltd.
- CADDI Inc.
Highlight-Mandate
- Advised Nintendo in an IP litigation matter in Japan, where Nintendo filed a lawsuit against Maricar Inc. concerning the protection of famous characters.
Anwält*innen
Führende Partner*innen
Die stärksten Partner*innen ihres Praxisbereichs, die eine führende Rolle in signifikanten Mandaten einnehmen und weitreichende Anerkennung unter Wettbewerbern und Mandanten genießen.
Weitere Kernanwält*innen
Shunji Matsuda; Kenji Tosaki; Keiji Tonomuta; Atsushi Yamaguchi