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Photo, Ryosuke Tateishi

Ryosuke Tateishi

Partner
Baker & McKenzie (Gaikokuho Joint Enterprise)

Biography

Ryosuke Tateishi is a member of the Tokyo Corporate/M&A and Dispute Resolution Groups. Prior to joining Baker McKenzie, Ryosuke worked for Sumitomo Corporation. He is a member of the Daini Tokyo Bar Association and has been a METI-registered management consultant since 2003.

Practice Focus

Ryosuke focuses his practice on general corporate law matters, and specializes in assisting domestic and overseas companies in healthcare-related industries — including the pharmaceutical, medical device and food industries — with compliance under the Pharmaceutical and Medical Devices Act, the Food Hygiene Act, the Food Labelling Act, the Anti-monopoly Act and the Act against Unjustifiable Premiums and Misleading Representations, among others. Ryosuke also provides anti-bribery policy compliance assistance.

Representative Legal Matters

  • Assisted a multinational pharmaceutical company in connection with supply of COVID 19-related products to Japan.
  • Assisted a US biopharmaceutical company in collaboration project for development and commercialization of Alzheimer-related products.
  • Assisted a regenerative medical products manufacturer in establishing and implementing compliance program.
  • Provided legal and compliance support for companies developing robotic technologies in healthcare industry.
  • Provided legal and compliance support for technology companies and medical device companies in connection with development and supply of wearable devices and relevant healthcare software.
  • Assisted a US medical device manufacturer with dispute resolution, crisis management, internal investigation and compliance, including anti-bribery policy compliance.
  • Assisted a UK pharmaceutical company in establishing a compliance program concerning off-label information disclosure.
  • Assisted a US pharmaceutical company in establishing a compliance program concerning advertising, including disease awareness activities.
  • Assisted a US pharmaceutical company in conducting a "deep dive" compliance audit.
  • Provided legal advice and assisted a number of pharmaceutical companies and medical device companies in license agreements and collaboration transactions.

Professional Associations and Memberships

  • Daini Tokyo Bar Association 
  • New York State Bar Association
  • American Bar Association

Admissions

  • New York~United States (2015)
  • Japan (2008)

Education

  • University of California at Los Angeles (LL.M.) (2014)
  • Waseda University (J.D.) (2007)
  • The University of Tokyo (LL.B.) (1998)

Languages

  • English
  • Japanese
  • Speaker, “Overview of U.S. pharmaceutical regulations and impact of the second Trump Administration’s pharmaceutical policies on business practices - Impact of Trump tariffs on the pharmaceutical industry and future trends”, Presentation, R&D Support Center Co., Ltd., November 2025
  • Speaker, “Overview of the Latest U.S. Pharmaceutical Market and Regulatory Landscape, Policy Trends, and Practical Implications under the Second Trump Administration – Considerations for Japanese Companies Regarding Environmental Changes in the U.S. Market”, Presentation, Johokiko Co., Ltd., September 2025
  • Speaker, "Impact of Trump 2.0 on the Pharmaceutical Industry", Presentation, Japan Pharmaceutical Manufacturers Association, January 2025
  • Co-author, “Strategic Legal Considerations for the Development of AI-Based Medical and Healthcare Products and Services”, Research and Development Leader, Technical Information Institute Co., Ltd., October 2024, Language: Japanese
  • Author, "Japan’s regulatory requirements for Software as a Medical Device (SaMD)", Journal of Medical Device Regulation, Global Regulatory Press, May 2024
  • Speaker, "Practice of Global Compliance", Presentation, Compliance Research Group of the Japan Pharmaceutical Industry Legal Affairs Association, December 2023
  • Author, "Clinical Trials: Overview (Japan) ", Thomson Reuters Practical Law, Thomson Reuters, November 2023
  • Author, "Legal issues arising out of treatment of PHR (Personal Health Record)", PHARMSTAGE, Technical Information Institute Co., Ltd., February 2023, Language: Japanese
  • Speaker, "Consideration about treatment of Software as Medical Device and legal advice for resolving obstacles", Presentation, Science & Technology Co.,Ltd., December 2022
  • Speaker, "Major compliance issues in pharmaceutical industry", Presentation, Japanese Institute for Public Engagement, November 2022