Our Firm

TOKYO ACTi is a highly specialized patent law firm with strong focus on serving intellectual property needs of established and cutting edge technology companies in the pharmaceutical and biotech industry.



Our mission is to be the most trusted and most valued patent law firm in Japan to serve clients, particularly, in the field of pharmaceutical and biotech industry.


Global Network

We have a global net work with major patent law firms, including those in US, UK, Germany, Swiss, France, Russia, Canada, Singapore, China, Taiwan, Korea, India, Thai, Brazil, Mexico among other countries.We, TOKYO ACTi, are committed to providing best-in-class legal services in the various areas of intellectual property law, from filing of patent applications and patent prosecutions, both domestically and internationally, through licensing and litigation.

 Basic Information

NAME TOKYO ACTi International Patent & Trademark Office, p.c.
ADDRESS [Shinjyuku Office]
Third Floor (3F),
Cosmo Shinjuku-Gyoen Park Bldg.
1-1-7, Shinjuku,
Shinjuku-ku, Tokyo,
160-0022 JAPAN
[Nakano Office (branch office)]
1-32-5-202, Honcho,
Nakano-ku Tokyo,
164-0012 Japan
T E L 81-3-6447-0211
F A X 81-3-6447-0212
SERVICES :Patent, Filing and Prosecution
:Utility Model, Filing and Prosecution
:Industrial Design, Filing and Prosecution
:Trademark, Filing and Prosecution
:International Filing and Prosecution
:JPO Trail
:FTO Opinion
:Validity and Patentability Opinion
:Infringement Litigation
:Invalidity Litigation
:Licensing related activity (Contract, Due Diligence, etc.)
:Intellectual Property Strategy Consulting
:Prior Art Search
:LOE(Loss of Exclusivity) estimation
:Translations of patent and technical literature



We are conveniently located in central TOKYO, 2 minutes walk from Shinjuku Gyoen station, which is 10 minutes from/to Kasumigaseki station (TOKYO district court and IP high court) and 9 minutes from/to Kokkai-gijidomae station (Japan Patent Office), all on Marunouchi line.