Mr Kenji Tosaki > Nagashima Ohno & Tsunematsu > Tokyo, Japan > Lawyer Profile
Nagashima Ohno & Tsunematsu Offices
JP TOWER, 2-7-2 MARUNOUCHI
CHIYODA-KU
TOKYO 100-7036
Japan
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Mr Kenji Tosaki
Work Department
IP practice group
Position
Dispute Resolution; IP, IT and Entertainment; IP Transactions; IP Litigation; General Corporate
Career
Judge of Tokyo District Court (1998-2000); Judge of Hachioji Branch of Tokyo District Court (2000-2002); Deputy Director, Planning and Legal Division, Planning and Coordination Bureau, Financial Services Agency (2002-2004); Judge of Tokyo District Court (2004); Deputy Director, Office for Privitization of Japan Post, Cabinet Secretariat (2004-2005); Judge of Tokyo District Court (Intellectual Property Division) (2005-2006); Judge of Takamatsu District Court (2006-2008); Nagashima Ohno & Tsunematsu (2008-), Partner (2013-); Member of Policy Commission, Type II Financial Instruments Firms Association (2010-); Adjunct Lecturer, Sophia Law School (2011)
Languages
Japanese and English
Memberships
AIPPI; AIPLA; INTA; LES, the Japan Association of Industrial Property Law; the Copyright Law Association of Japan
Education
The University of Tokyo (LL.B, 1996); Southern Methodist University Dedman School of Law (Visiting Scholar, 2001-2002)
Lawyer Rankings
Japan > Intellectual property: Independent local firms
Nagashima Ohno & Tsunematsu offers a broad spectrum of expertise in IP litigation and transactional matters such as due diligence, R&D agreements, AI and big data across a range of industries. The practice is strengthened by the considerable expertise of Shunji Matsuda, as well as Kenji Tosaki, who handles IP infringement litigations and IP invalidation litigations before the IP High Court, the Supreme Court, District Courts and Japan Patent Office. They are joined by Keiji Tonomura, who specialises in cross-border IP transactions with a particular focus on the TMT industry and emergent technologies. Another associate of note is Masashi Chusho.
Comparative Guides
| Japan: Patent Litigation | November 2023 | This country-specific Q&A provides an overview of Patent Litigation laws and regulations applicable in Japan. |
| Japan: Intellectual Property | September 2023 | This country-specific Q&A provides an overview of Intellectual Property laws and regulations applicable in Japan. |
Lawyer Rankings
Top Tier Firm Rankings
- Antitrust and competition: Independent local firms
- Banking and finance: Independent local firms
- Capital markets: Independent local firms
- Corporate and M&A: Independent local firms
- Dispute resolution: Independent local firms
- Intellectual property: Independent local firms
- Labour and employment: Independent local firms
- Private wealth: Independent local firms
- Projects and energy: Independent local firms
- Real estate and construction: Independent local firms
- Restructuring and insolvency: Independent local firms
- Risk management and investigations: Independent local firms
- Tax: Independent local firms
- TMT: Independent local firms