Keisen Associates
Kéisén Associates, formerly Omori & Yaguchi, is a Tokyo-based Japanese intellectual property law firm with offices in Tokyo, Philadelphia and New York City. Our practice offers a broad range of Japanese and international legal support in patent, design, and trademark law. We offer prior art search, in-house technical translations, international licensing, as well as legal consultation for international business development and technology transfer support in Japan. Our highly skilled attorneys and patent agents are supported by a team of technical advisors, translators and an administrative staff who are fluent in English. We can provide clients with a seamless, efficient, and cost effective service in all areas intellectual property protection in Japan. We also provide highly skilled patent and trademark search in Japan. Our Contact Information-Tokyo office: Keisen Associates Aioi Nissay Dowa Sompo Nibancho Bldg. 8th Floor Nibancho 5-6, Chiyoda-ku, Tokyo 102-0084 Tel:+81-3-6825-1418 Fax:+81-3-6825-1423 e-mail:keisen_tky@keisenassociates.com -Philadelphia office: 8 Penn Center, Suite 1100 1628 John F. Kennedy Blvd. Philadelphia, PA 19103, USA TEL: 215-701-6349 FAX: 215-751-0192 e-mail: keisen_phl@keisenassociates.com
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Clara Yamagishi
Intellectual Property Technical Advisor · Legal
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Makoto Izawa
Ip Technical Advisor · Information Technology
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Mari Sanchez
Paralegal · Legal
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Rika Osaki
Legal Assistant · Legal
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Top roles at Keisen Associates
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- 1attorney
- 1intellectual property technical advisor
- 1ip technical advisor
- 1legal assistant
- 1ms finance candidate at villanova june 2026. ms computer science 2025
- 1paralegal
- 1patent attorney
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