About our Firm

Isshiki International Law Office is a Tokyo-based international law firm specializing in intellectual property and dispute resolution matters. Prior to its founding in 2011, Taro Isshiki was a partner at Morrison & Foerster, a leading global law firm.

We assist clients in all manner of U.S. litigation and international dispute matters, including providing on-the-ground litigation support to international clients and law firms.

We work closely with Isshiki & Co. and provide patent opinions, negotiate IP licenses, conduct IP due diligence and freedom-to-operate assessment. We also assist clients in U.S. patent prosecution matters and handle a wide range of trademark and trade secret matters.


Isshiki International Law Office
Mita-Nitto-Daibiru Bldg 7F,
3-11-36 Mita, Minato-ku, Tokyo 108-0073
TEL : 03-4500-9102

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- 3 minute walk from Exit A4 of Sengakuji Station (Toei Subway Asakusa Line)
- 10 minute walk from Mita Station (Toei Subway Asakusa Line / Mita Line)
- 12 minute walk from Tamachi Station (JR Line)