Features of Legal Department

We have in our legal department several attorneys-at-law who are former judges, an attorney-at-law who has business experience in a corporate IP section, a licensing specialist, etc., and are providing legal services mainly for IP matters based on a variety of knowledge and experience. In particular, in the fields of litigation and expert opinion, we are capable of providing a stable quality service by, e.g., reflecting a judge's professional judgment.

We also have extensive experience in oversea cases.

For cases relating to patents, utility models, design patents and trademarks, the attorneys-at-law of our legal department and patent attorneys of our patent or trademark department work in collaboration to review and respond to the issue from a wide range of perspectives. Since our patent department has specialists from almost all technical fields, we can provide a one-stop service for IP cases.

Main Areas of Practice

  • Providing advice and expert opinion on the validity, scope of rights, etc. of patents, utility models, design patents and trademarks;
  • Litigation and pre-litigation negotiation for infringement of patents, utility models, design patents, trademarks and copyrights; violation of the Unfair Competition Prevention Act.
  • Invalidation Trials, etc. before the Patent Office and suits before the court, e.g. demanding revocation of a Patent Office decision in Japan and overseas;
  • Draft preparation, contract checking and representation in negotiations regarding technology agreements such as licensing agreements, joint development agreements and confidentiality agreements.
  • Request before Customs for the inhibition of export and import based on patents, utility models, design patents, trademarks, copyrights, etc. (Border Regulations).
  • General civil cases and others.

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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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