TMI Associates
Rankings
Awarded leading firm in Global 2026
Ranked Departments:
Ranked Individuals:
Overview
Provided by TMI Associates
Senior Managing Partner: Katsuro Tanaka
Senior Partners: Eizo Matsuo, Tomohiro Tohyama, Yoshiyuki Inaba, Ryosuke Ito
Number of Partners: 210
Number of Attorneys: 675
Number of Patent/trademark attorneys: 102
Languages: Chinese, English, French, Hindi, Indonesian, Japanese, Korean, Myanmar, Thai, Vietnamese
TMI Associates is one of Japan’s largest law firms, with more than 770 attorneys, patent attorneys, foreign lawyers and other professionals. TMI is also one of Japan’s most internationally-minded law firms and aspires to earn the trust of its global client base through deep expertise, hard work, and dedication.
TMI has broad transactional and dispute resolution capabilities, a distinctive regulatory focus and a renowned IP practice. The firm’s primary areas of practice include corporate and M&A, litigation and arbitration, banking and finance, antitrust and competition law, risk management, and labour and employment law.
The firm takes pride in its deep understanding of its clients’ industries, including retail and other brand businesses; media, entertainment and sports; life sciences; information technology and communications; banking, securities, insurance and trusts; and human resources and education. Drawing upon its strength in the IP area, TMI has become a market leader in representing companies in cutting-edge areas including data privacy, FinTech, health IT and renewable energy.
- Corporate and M&A
- Private Equity
- Banking and Finance
- Capital Markets
- Real Estate and Construction
- Natural Resources / Renewable Energy
- Intellectual Property
- Data Protection and Privacy
- FinTech
- TMT
- Entertainment / Media / Sports
- Dispute Resolution (Litigation / Arbitration / Mediation)
- Labour and Employment
- Antitrust and Competition
- Crisis Management / Global Investigations
- International Trade and Investment
- Tax
- Restructuring
- Life Sciences / Healthcare
- Maritime / Shipping
- Space Law
HEAD OFFICE:
23rd Floor, Roppongi Hills Mori Tower, 6-10-1 Roppongi, Minato-ku, Tokyo 106-6123
Tel: +81(0)3-6438-5511
Email: [email protected]
For more details about Japan offices, visit website https://www.tmi.gr.jp/about/bases/
OVERSEAS:
CHINA:
BEIJING
Email: [email protected]
SHANGHAI
Email: [email protected]
MYANMAR:
YANGON
Email: [email protected]
SINGAPORE:
Email: [email protected]
VIETNAM:
HANOI
Email: [email protected]
HO CHI MINH CITY
Email: [email protected]
CAMBODIA:
PHNOM PENH
Email: [email protected]
THAILAND:
BANGKOK
Email: [email protected]
INDONESIA:
JAKARTA (*Affiliated office)
Email: [email protected]
MALAYSIA:
KUALA LUMPUR (*Affiliated office)
Email: [email protected]
USA:
SILICON VALLEY
Email: [email protected]
UK:
LONDON
Email: [email protected]
FRANCE:
PARIS
Email: [email protected]
BELGIUM:
BRUSSELS
Email: [email protected]
Ranked Offices
Provided by TMI Associates
Japan - Head office
Tokyo-to
23rd Floor, Roppongi Hills Mori Tower 6-10-1 Roppongi , Minato-ku, Tokyo-to, Japan, 106-6123, Minato-ku
Ranked Departments
Ranked Individuals
Contributions
Latest contributions provided by TMI Associates
All contributions provided by TMI Associates
Articles, highlights and press releases
5 items provided by TMI Associates
Colin Passmore, Special Adviser, Awarded Honorary King’s Counsel Title in the UK
Colin Passmore, former senior partner at Simmons & Simmons and now Special Adviser to TMI Associates (Tokyo), has been appointed Honorary King’s Counsel, one of the highest honours in the legal profession of England and Wales.
Ms. Reiga Shimizu, Attorney-at-Law, Joined TMI Avocats & Associés as Regional Partner
TMI Associates (Location: Minato-ku, Tokyo; Senior Managing Partner: Katsuro Tanaka) welcomed Ms. Reiga Shimizu, attorney-at-law, as a Regional Partner at its Paris Office as of October 1, 2025.
Announcement of the establishment of the Sydney Desk
TMI Associates has formed an alliance with Johnson Winter Slattery (JWS), which is an Australian law firm which has offices all over Australia, and established our Sydney Desk within the JWS’s Sydney Office.
Announcement of the Brussels Office’s Commencement of Operations - TMI Associates Europe S.R.L.
Announcement of the Brussels Office’s Commencement of Operations - TMI Associates Europe S.R.L. ~ Supporting Clients in Growing Their Business in the European Market ~
TMI Strengthens its Expansion in Europe and Africa with the Addition of Attorney Colin Passmore
TMI Associates, one of the leading law firms in Japan, has appointed Mr. Colin Passmore, a former senior partner of prestigious UK law firm Simmons & Simmons, as a Special Advisor to enhance TMI’s expansion throughout the European and African regions.
Colin Passmore, Special Adviser, Awarded Honorary King’s Counsel Title in the UK
Colin Passmore, former senior partner at Simmons & Simmons and now Special Adviser to TMI Associates (Tokyo), has been appointed Honorary King’s Counsel, one of the highest honours in the legal profession of England and Wales.
Ms. Reiga Shimizu, Attorney-at-Law, Joined TMI Avocats & Associés as Regional Partner
TMI Associates (Location: Minato-ku, Tokyo; Senior Managing Partner: Katsuro Tanaka) welcomed Ms. Reiga Shimizu, attorney-at-law, as a Regional Partner at its Paris Office as of October 1, 2025.
Announcement of the establishment of the Sydney Desk
TMI Associates has formed an alliance with Johnson Winter Slattery (JWS), which is an Australian law firm which has offices all over Australia, and established our Sydney Desk within the JWS’s Sydney Office.
Announcement of the Brussels Office’s Commencement of Operations - TMI Associates Europe S.R.L.
Announcement of the Brussels Office’s Commencement of Operations - TMI Associates Europe S.R.L. ~ Supporting Clients in Growing Their Business in the European Market ~
TMI Strengthens its Expansion in Europe and Africa with the Addition of Attorney Colin Passmore
TMI Associates, one of the leading law firms in Japan, has appointed Mr. Colin Passmore, a former senior partner of prestigious UK law firm Simmons & Simmons, as a Special Advisor to enhance TMI’s expansion throughout the European and African regions.