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VerifiedLegal Services· Founded 1999

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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HeadquartersTokyo, JapanEmployees6(11 to 50)Annual revenue$1M to <$10MFounded year1999Websitekeisenassociates.comLinkedIn profileLinkedIn

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Top roles at Keisen Associates

7 distinct titles indexed · top 7 shown.

  • 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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