Trademark Department

Through our long years of practice, we have built an extensive network of foreign partners, and have amassed considerable experience in trademark matters both in Japan and overseas.

The trademark attorneys in our Trademark Department have a broad range of backgrounds as well as extensive experience and expert knowledge which enables us to provide a high level of trademark-related services for Japanese and overseas clients. Our professional services include trademark searches, filing and prosecution of trademark applications, defense against infringement and management of trademark portfolios. We also provide useful information on the Japanese trademark situation through our website and newsletters.

In addition, for licensing negotiations, infringement actions, etc. involving trademarks, we are able to utilize the expertise of the attorneys-at-law of our litigation department, working alongside our trademark attorneys to provide our clients with the most effective representation possible.

Main Services

  • Trademark searches in Japan and overseas
  • Preparation and filing of trademark applications in Japan and overseas
  • Management of registered trademarks in Japan and overseas
  • Prosecution of invalidation and appeal cases in Japan and overseas
  • Consultation and expert opinions on validity and exercise of trademark rights
  • Litigation regarding infringement of trademark rights
  • Trademark-based injunctions against import and export of counterfeit products (Border measures)
  • Obtainment, maintenance and protection of domain names in Japan

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Areas of Practice


  • TEL:+81(0)3-5470-1900
  • FAX:+81(0)3-5470-1911


Toranomon37 Mori Bldg. 10F,
3-5-1 Toranomon, Minato-ku,
Tokyo 105-8423, JAPAN

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