The Legal 500

Work +81 3 5220 6500
Fax +81 3 5220 6556
Tokyo, Beijing

Shogo Matsunaga

Work Phone: +81 3 5220 6500 E-mail
Sonderhoff & Einsel Law and Patent Office

Work Department

Intellectual property, labour, general corporate and cross-border.


Position: IP and labour counsel with extensive experience advising European and U.S. industries and expatriate executives at multinational companies. Shogo’s area of IP practice includes patent, trademark, unfair competition, and trade secrets. Shogo has established unique and effective anti-counterfeiting practices that have gained great favor with prominent luxury brands, as well as cosmetic, sports, and emerging fashion brands. Shogo also developed his advocacy skills in dismissal cases involving senior executives at multinational companies, which are rarely protected by local labor laws. Shogo has enjoyed a great deal of success in concluding highly favorable out-of-court settlements for his clients. Other than the above, Shogo has extensive experience in cross-border transactions including litigations arising in the context of international trades.


Career: IPtrust Inc. (1993-2007); Corporate Auditor of Bruker AXS (2011-); Corporate Auditor of Bruker Biospin (2011-); Corporate Auditor of Bruker Daltonics (2011-); Corporate Auditor of Bruker Optics (2011-); Visiting Scholar at University of Washington School of Law (2013-2014). Publications of note: ‘Apple v Samsung: Overview of Decisions and Judgment of IP High Court Grand Panel’ (July issue of ‘Patent News’ 2014, Research Institute of Economy, Trade and Industry); Study of Two US Court Decisions Recognizing RAND Royalty for SEP and Tokyo District Court Decision Denying Damage Claim Based on SEP” (CIPIC Journal 2013); ‘Overview of the Judgment on Standard Essential Patent Enforcement- Apple v Samsung H23 (wa) 38969’ (May issue of ‘Patent News 2013, Research Institute of Economy, Trade and Industry); Trademark-related Court Precedents in 2011 ‘(July issue of “PATENT’ 2012, co-author); ‘Trademark-related Court Precedents in 2010’ (April issue of ‘PATENT’ 2011, co-author); ‘Trend Analysis of Intellectual Property Rights in Europe’ (IP Annual Report 2009, NBL, co-author).


Member: Memberships held: IP Division of Tokyo Bar Association, Brand Management Committee of Japan Trademark Association, LESJ (Licensing Executives Society Japan), IP Law Network for Lawyers, INTA (International Trademark Association).


Education: The Legal Training and Research Institute of the Supreme Court of Japan (2008); Waseda University Tokyo (LLB 2008).

Japan: Intellectual property

Independent local firms

Within: Independent local firms

Sonderhoff & Einsel Law and Patent Office focuses on inbound IP work for a largely German corporate client base. Felix-Reinhard Einsel and head of the firm’s IP enforcement practice Shogo Matsunaga are recommended.

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Legal Developments in Japan

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