Hiroyuki Tanaka


Hiroyuki Tanaka

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Hiroyuki Tanaka's practice areas are data protection, IP, and IT. He has extensive experience for advising foreign clients about Japanese data protection law. He is also familiar with global data protection regulations including GDPR and CCPA, and he helps clients with global data compliance. He has extensive experience for various IP infringement disputes and technology disputes.

Contact Information


Practice Areas

Hiroyuki Tanaka:Awards

Lawyers from Mori Hamada & Matsumoto were included in the 12th edition of The Best Lawyers™ in Japan
35 lawyers were selected as leading lawyers in asialaw Profiles "asia law Leading Lawyers 2021"
High evaluation received from " Who′s Who Legal: Japan 2020"

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Hiroyuki Tanaka:News

Firm News
Eleven new partners and seven new counsels
Public Service
Hiroyuki Tanaka became the lecturer (Intellectual Property Law I) at Keio University (Department of Law)
Firm News
Twelve new partners and seven new of counsels

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Hiroyuki Tanaka:Legal Topics

Hiroyuki Tanaka:Seminars

May 26, 2021External Seminars
"Live Seminar Key Points of the Draft Guidelines for the Amended APPI"
Apr. 15, 2021External Seminars
"Cyber Law Round Table – Q&A (JAPAN)"
Aug. 12, 2020External Seminars
"The Data Security issue in IOT Devices"

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Hiroyuki Tanaka:Publications

"Software Development Contracts - Key Review Points  Identified in the Negotiation Process"
Magazine Article
"Handy Way to Learn Personal Information Protection Act Fundamentals, Including Revisions, in the Form of Dialogue - Part 14: Personal Information Subject to Legal Protection"
"Key Points of the Draft Guidelines for the 2020 Amended Act on Protection of Personal Information"

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Hiroyuki Tanaka:Other


  • Keio University (LL.B., 2004)
  • Keio University Law School (J.D., 2006)
  • New York University School of Law (LL.M. in Competition, Innovation, and Information Law, Concentration in Intellectual Property Law, 2013)
  • with Clayton Utz, Sydney, Australia (2013-2014)
  • Lecturer (Intellectual Property Law I) at Keio University (Department of Law)(2018)

Major Activities

  • Member of Japan Association of Industrial Property Law
  • Member of Copyright Law Association of Japan
  • Member of Information Network Law Association
  • Member of Law and Computers Association of Japan
  • Member of Association of Law and Information Systems
  • Member of International Association of Privacy Professionals
  • Lecturer (Intellectual Property Law I) at Keio University (Department of Law)(2018)
  • Advisor to Japan DPO Association (2019-)

Practice Group

  • Data Security Practice Group
  • Intellectual Property Practice Group
  • Litigation Practice Group
  • International Dispute Resolution Practice Group
  • Technology, Media and Telecommunications Practice Group
  • China & Asia Practice Group

Bar Admissions

admitted in Japan, 2007; New York, 2014
Daini-Tokyo Bar Association
New York State Bar Association