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Message from President

Ushiki & Associates was started by former President/Patent Attorney, Kazuo Ushiki in Nagaoka-shi, Niigata in 1933. Later, in 1945 when the Nagaoka Air Raid turned the city into a sea of fire, Kazuo Ushiki’s family of eight managed to survive and move to Niigata-shi of the present day while pulling a two-wheeled cart with clients’ patent files stacked therein. Our relationships with foreign associates began when the present President/Patent Attorney Mamoru Ushiki first represented a client in applying for a U.S. patent through a local representative in America in the day and age where only Telex was available. Since then, we have also been able to establish an office in Kanda, Tokyo, and move to Toranomon, Tokyo up to the present date. In our 90 year history, we have been successful in not only cultivating strong relationships of trust with companies, universities and independent inventors in Niigata region, but also working closely with companies, universities and independent inventors in the capital region due to the fact that our office in Toranomon, Tokyo is a seven minute walk to the Patent Office.


While meeting foreign associates in person used to be difficult, our office in Toranomon, Tokyo has enabled our foreign associates to easily visit and consult us, and even hold seminars with us and our clients. This has allowed us to build favorable relationships with even more foreign associates. Our goal has been and will always be assisting our clients (e.g., companies, universities and independent inventors) in all aspects of intellectual property. We are looking forward to hearing from you regarding: preliminary patentability searches; applications; procedures for acquisition of rights (e.g., trial/appeal examiner interviews, litigations rescinding trial decisions and trials/appeals); rights protection; responses to rights violations; responses to warnings and litigations; conclusions of advisory contracts; foreign applications; cost estimation requests; and anything related to intellectual property.

Ushiki & Associates

President/Patent Attorney, 

Mamoru Ushiki

Visit our Office

Visit our Office

Tokyo(Tranomon) Office 

Tokyo Office


3rd Floor, Yusei Fukushi Kotohira Building, 1-14-1 Toranomon, Minato-ku, Tokyo 105-0001, Japan

Telephone: +81-3-3500-1720   |  Facsimile: +81-3-3500-1721


Public Transportation

Tokyo Metro Ginza Line: 2 to 3-minute walk from Exit B6 of Toranomon Sta.

Tokyo Metro Hibiya Line: 1-minute walk from Exit B4 of Toranomon-hills Sta.

Tokyo Metro Chiyoda Line / Marunouchi Line / Hibiya Line: 7-minute walk from Exit A12 of Kasumigaseki Sta.


​​● Access from Toranomon Station

Exit from Exit B6 of Toranomon Station. Go straight for two blocks toward Toranomon Hills and you will find Seven-Eleven on your right side. Our office is located on the third floor of that building. 

Access from Toranomon-hills Station

Exit from Exit B4 of Toranomon-hills Station, and you will find a red brick-colored building in front. There is a Seven-Eleven on the first floor. Our office is located on the third floor of that building. 

Niigata Office

Niigata Office 


21-7, Shinano-machi, Chuo-ku, Niigata-shi
Niigata 951-8152 Japan

Telephone: +81-25-232-0161 | Facsimile: +81-25-233-2240

Public Transportation


JR Echigo Line: 9-minute walk from Sekiya Sta.

Hamauracho Line : 1-minute walk from Bunkyocho bus stop
Ariake Line : 2-minute walk from Shinanomachi bus stop

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