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About Us新着情報


Sanwa International Patent Office is a Japanese patent office that has been operating in Tokyo, Japan for over 40 years.

We are located in central Tokyo close to the landmark Tokyo Tower and next to the historic Atago ‘mountain.’

Our office provides preliminary search and filing applications with respect to patents, trademarks, designs and utility models.

Our small ‘boutique’ firm offers specialized service with personalized attention to detail concerning protection of IP rights including patents, trademarks, designs, utility models and copyright and protection from unfair competition and related fields.

We will continue efforts to provide the utmost in personalized services at all times.


Sanwa International Patent Office
Patent Attorney
Futoshi Hanamura



Futoshi Hanamura

Sanwa International Patent Office


Address: 
2nd Floor,
Toranomon MT Bldg., 10-3, Toranomon 3-chome,
Minato-ku, Tokyo, 105-0001 JAPAN


TEL. +81-3-5777-6522
FAX. +81-3-5777-6523