Department profile
TMI Associates

Dispute Resolution: Domestic

Asia-Pacific Guide 2026 : Japan


TMI Associates

Rankings

About

Provided by TMI Associates

TMI Associates is one of Japan’s leading law firms in dispute resolution, having handled hundreds of cases involving commercial, intellectual property, tax, and administrative disputes before both courts, at trial and on appeal, as well as before arbitration tribunals. In addition, TMI is frequently called on for local assistance by counsel involved in worldwide litigation matters.

The Firm can form specific teams, depending on the nature of an individual case, that is comprised of attorneys who are also specialists in a variety of fields, including medical doctors, architects, accountants, and patent attorneys with diverse technological backgrounds. TMI also has the benefit of having attorneys and advisors in the Firm with distinguished backgrounds in public service, including former judges (including retired Supreme Court Justices) and prosecutors (including a former Prosecutor General), who are regularly involved in forming an appropriate litigation strategy and approach that seeks to best protect client interests and rights.

Chambers Review

Provided by Chambers

Dispute Resolution: Domestic - Japan

Band 4

Band 4


What the Team is Known For

TMI Associates is proficient in IP, antitrust and contractual disputes. The firm represents domestic and foreign clients in the manufacturing, TMT and electronics industries, and is well placed to handle fair trade and patent infringement disputes. The team possesses additional expertise in alternative dispute resolution matters.

Work Highlights

Provided by Chambers

  • TMI Associates represented Meta in the litigation on publicity rights and image rights infringements filed by a Japanese celebrity whose image and name were used in the fraudulent advertisement disseminated on Facebook and Instagram.

Notable Practitioners

Provided by Chambers

  • Senior StatespeopleHidetoshi Masunaga
    Senior StatespeopleHidetoshi Masunaga

    Hidetoshi Masunaga

    Hidetoshi Masunaga has significant expertise in handling contentious matters in the Tokyo District Court, High Court and Supreme Court. He is particularly experienced in advising on corporate tax disputes and IP infringement litigation.

Ranked Individuals at TMI Associates (1)

Japan

Members

Provided by TMI Associates

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