Junichi Yamazaki


Tokyo, Japan

Junichi Yamazaki specializes in intellectual property rights, international transactions, corporate law, civil litigation and international arbitration and ADR.

With respect to the intellectual property law area, he provides extensive services for his clients including representation in numerous infringement litigations and invalidity proceedings involving patents and other IPs and in negotiations with domestic and overseas counterparty for license and technical tie-up agreements. The technologies having been involved include machine tools, electric-electronic devices, communication systems, broadcasting, software, printing, civil engineering and construction, chemical products, food, cosmetics.  He also has ample experience in copyright and moral rights issues primarily in software, music and cinematographic works as well as performer’s rights.

He also serves as retained counsel for not only listed companies but also small-and-medium start-up companies and renders regular legal services such as counselling and drafting contracts and other legal documents. 

In international arbitration, He serves as chair arbitrator, party-appointed arbitrator and institution-appointed sole arbitrator in ICC and JCAA arbitrations.  


Tokyo University, Economics Department (BE, 1968)

Supreme Court Legal Training Institute (1978)

Miyake, Kitamura & Tanaka (1978 -1991)

Miyake & Yamazaki (1991 -2016)

Patent Attorney (2005)

King & Wood Mallesons Law Offices Foreign Law Joint Enterprise (2016-present)


Japanese, English and Chinese


Attorney at Law (Admitted in Japan), Patent Attorney

Major Activities

President and Chairman of Operations, Japan Intellectual Property Arbitration Center

President, Licensing Executives Society Japan

Legal Counsel, Licensing Executives Society International (LESI)

Supervisor and Counsel, Music Publisher Association of Japan

Chairman, The Intellectual Property Committee of Inter-Pacific Bar Association (IPBA)

Lecturer (specialized in Intellectual Property Strategy), Professional Graduate School, Tokyo University of Science

IPR Expert Advisor for Suspension of Importing IP Infringing Goods


・Intellectual Property Protection in Japan:A Practical Aspect (1998, IPBA)

・Co-author and editor, New Civil Procedure Law Practice Manual,  Edited by Civil Litigation Improvement Research Committee of Daini Tokyo Bar Association, Hanrei Times 2000

・Not Essential: a Requirement for Equalization?, Trends in Patent Infringement Case Law, Japan Institute of Invention and Innovation 2002

・Current Status and Future of Japan Intellectual Property Arbitration Center, Law & Technology No. 23, 2004

・International Intellectual Property Law, Japan, Aspatore Book (2005)

・Legal Counselling on IP Licensing Contracts (Edition), Seirin Shoin 2011

Books and Papers

・“M&A Contracts under Chinese Law: Preconditions, Representations and Warranties, and Closing, etc.” (co-author)     JCA Journal No.648

・“Restrictive Clauses in Technology Import Contract and Cases Analysis”, Mizuho Headline for Legal, Tax, and Labor Affairs in China, Vol.15 (2012)

・“Travel Revolution: the Development and Regulation of Autonomous Vehicles in China” (co-author),  Journal of the Japanese Institute of International Business Law, Vol.47, No.8(2019)

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