Hiroyuki Tanaka


Hiroyuki Tanaka

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Hiroyuki Tanaka's practice areas are data protection, IT, and IP. He is familiar with global data protection regulations including GDPR, and he has extensive experience for advising foreign clients about Japanese data protection law. He has extensive experience as a legal counsel for various IP infringement disputes and disputes related to software and system integration.

Contact Information


Practice Areas

Hiroyuki Tanaka:Awards

Lawyers from Mori Hamada & Matsumoto were included in the 11th edition of The Best Lawyers™ in Japan
Top rankings received in The Nikkei's "Corporate Legal Affairs and Lawyer Survey 2019"
35 lawyers were selected as leading lawyers in asialaw PROFILES' "Asialaw Leading Lawyers 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

Jul. 24, 2018External Seminars
"The 9th Seminar on Practical GDPR Compliance (the Impact of Consent Requirements under GDPR on Cookie, Advertising and Marketing)"
Jan. 24, 2018External Seminars
"The 6th Seminar on Practical GDPR Compliance (GDPR Guidelines regarding Consent and Transparency)"
Nov. 22, 2017External Seminars
"The 5th Seminar on Practical GDPR Compliance (GDPR Guidelines regarding DPIA, Data Breach Notice, Automatic Processing and Profiling, Administrative Fines)"

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Hiroyuki Tanaka:Publications

Magazine Article
"Key Practical Points Based on Case Studies - Scope of “Delegation” in Handling of Personal Data"
Magazine Article
"Criteria for Deciding Scope and Propriety of Regulations - Complying with Obligations Prohibiting Inappropriate Use"
"Japan enacts Amendments to the Act on the Protection of Personal Information"

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Hiroyuki Tanaka:Other


  • Keio University (LL.B., 2004)
  • Keio 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 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

  • 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