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Beijing, Tokyo

Felix-Reinhard Einsel

Work +81 3 5220 6500
Sonderhoff & Einsel Law and Patent Office

Work Department

Intellectual property.


Managing Partner. Prosecution of patents, designs and trademarks, oppositions, invalidations, expert opinions thereof.


Admitted in: 1994 Attorney at Law, State of New York (US); 1999 Japanese patent attorney; 2003 Qualification to represent before courts of law in infringement cases (Japan). Experience: 1994 Dr Sonderhoff Law Office; 2000 Partner at Dr Sonderhoff Law Office; 2011 Managing Partner at Sonderhoff & Einsel Law and Patent Office. Memberships held: Licensing Executives Society Japan (LES); International Association for the Protection of Intellectual Property (AIPPI); American Intellectual Property Law Association (AIPLA); INTA (International Trademark Association); Association of Intellectual Property Experts, Germany [Vereinigung von Fachleuten des Gewerblichen Rechtsschutzes (VPP)]; German Association for the Protection of Intellectual Property [Deutsche Vereinigung fur gewerblichen Rechtsschutz und Urheberrecht e.V. (GRUR)]. Publications of note: Intellectual Property Law Annual Report, 2013, p.194-204: Latest Developments in Europe; Journal of Japanese Law, Special Issue 5 (2012), p187-196: The Danger of Confusion of Wordmarks in Japan.


German, Japanese, English.


Rikkyo University, International and Comparative Law (1992); University of Washington School of Law, LLM (1993); Tokyo University of Science, Electrical Engineering (2004).


Tennis, golf.

Japan: Intellectual property

Independent local firms

Within: Independent local firms

The ‘always friendly, trustworthy and reliable’ team at Sonderhoff & Einsel Law and Patent Office is singled out for its ‘very short response times, profound knowledge and top support’. Headed by Felix-Reinhard Einsel, the practice handles a range of patent, trade mark and design matters.

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Legal Developments in Japan

Legal Developments and updates from the leading lawyers in each jurisdiction. To contribute, send an email request to
  • Taking control of a Japanese publicly listed company:

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  • Yuasa and Hara Business Law News

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  • Licensing - 2010

    Q & A on Licensing in Japan 
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