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Eisei International Patent Firm, based on our many years of experience, will provide help in regard to acquiring appropriate legal protection in relation to new “knowledge” and further making use of such. For our customers to prosper by being armed with intellectual property – this is our desire at Eisei (“Eisei” is a registered trademark of our firm).


The name EISEI is derived from the Japanese pronunciation of the word栄星, which literally means “Prosperous Stars”.

Together with the name change, we created our business logo, as shown at the left top, with reference to the standard used by the invincible local clan called Tsuruoka Domain in Japan in the late 19th century. The logo illustrates the Seven Stars, symbolizing care and trust.

Overseas Business Patents / Utility Models Trademark Registration Design Registration
Intellectual Property Research Intellectual Property Translation Certifications / Notifications Prices

■Addess:Yamashiro Daisan Building 7nd Floor,3-chōme-6 Kanda Nishikichō, Tōkyō Japan,101-0054

①JR中央線・総武線 御茶ノ水駅 御茶ノ水橋口

②千代田線 新御茶ノ水駅

③丸の内線 淡路町駅

④都営新宿線 小川町駅

⑤半蔵門線・都営新宿線・都営三田線 神保町駅


■Open Time:Monday to Friday:9:00~18:00

  ※Except New Year And Legal Holidays