Ishihara & Ishihara

Patent & Trademark Attorneys in Tokyo, Japan (Since 1980)

We are an international patent firm which provides a wide range of services in the field of intellectual property inside and outside Japan.

About Us

Firm Name
Ishihara & Ishihara
Patent Attorneys
Yukinori Ishihara
Masanori Ishihara
1. Legal services relating to Intellectual Property
2. Judgement, Consulting
Fields of electronics and electrical engineering.
Fields of mechanical engineering, especially automobile technologies.
Tokyo Shibuya Headquarters:
Miyamasuzaka ST Bldg. 9F
8-6, Shibuya 1-chome, Shibuya-ku, Tokyo 150-0002, Japan

Shizuoka Atami Branch Office:
Atami Sky Heights #404
13-25, Kasuga-cho, Atami-shi, Shizuoka 413-0005, Japan
Phone number
Tokyo Shibuya Headquarters:
Shizuoka Atami Branch Office:
Fax number

Practice Areas

We are handling intellectual property matters, i.e., Patent, Utility Model, Design and Trademark matters.


Yukinori Ishihara (Mr.), Patent Attorney
(Reg. No. 16704 registered in 2010)

Masanori Ishihara (Mr.), Patent Attorney
(Reg. No. 8578 registered in 1980)


Our office is located in Shibuya, Tokyo, about five-minute walk from Shibuya Station and Shibuya Crossing.

Contact Form