LAWYER PROFILE
Takamasa Horio

Takamasa Horio

Asia-Pacific 2026

Chambers ranking badge
Chambers ranking badge

Ranked in 1 practice area

About

Provided by Mori Hamada

Practice Areas

Life Sciences / Healthcare; Crisis Management / Compliance (Internal Investigations, Global Compliance, Whistleblowing); M&A (M&A / Reorganizations / Capital and Business Alliances, Cross-Border M&A, Private Equity, Start-Ups); Intellectual Property (Intellectual Property Transactions, Intellectual Property Disputes); Corporate Law (Corporate Governance)

Career

Background

Doshisha University (LL.B., 2006); Kyoto University Law School (J.D., 2008); Northwestern University School of Law (LL.M. with honors, 2016); Northwestern University School of Law, Kellogg School of Management (Certificate in Business Administration, 2016); Jenner & Block LLP, Chicago (2016-2017); assigned to the Pharmaceutical Bureau (Compliance and Narcotics Division, Pharmaceutical Evaluation Division, and Medical Device Evaluation Division) of the Ministry of Health, Labour and Welfare as a fixed-term government employee (as Legal Adviser) (2017-2020)

Major Activities

Member of Review Committee for Study Regarding Pharmaceutical Regulations on Medical Equipment Programs Utilizing Artificial Intelligence and Other Advanced Technology⁠, Japan Agency for Medical Research and Development(⁠2020-2022⁠); Member of Study Group on Countermeasures against Cannabis and Other Drugs⁠, Ministry of Health⁠, Labour and Welfare(⁠2020-2021⁠); Member of the Advisory Committee (⁠Advisory Committee on Manufacture and Quality Control of Pharmaceutical Products⁠) for Toyama Pharmaceutical Affairs Council (⁠2021⁠); Adviser for The Japan Federation of Medical Devices Associations (⁠2021-⁠); Member of the Toyama Prefecture GMP Inspection Investigative Committee (⁠2021⁠); Member of Legislation Committee⁠, Japan Pharmaceutical Association (⁠2022-⁠); Member of the Board of Experts for the “⁠Consultation Desk for Clinical Research of Medical Equipment⁠,⁠” Japan Association for the Advancement of Medical Equipment (⁠2024-⁠); Member of the Clinical Trial Ethics Review Board⁠, Cancer Institute Hospital Of JFCR (⁠2025-⁠)

Professional Memberships

admitted in Japan, 2009; Illinois, 2016

Chambers Review

Provided by Chambers

Chambers Asia & Pacific

Life Sciences - Japan

Band 4
Band 4

Individual Editorial

Takamasa Horio is a notable practitioner assisting pharmaceutical and medical device companies with regulatory matters. Clients benefit from his experience working as part of government bodies in the life sciences space.

Strengths

Provided by Chambers

  • He has understanding of the business and in-depth knowledge of the practices of the Pharmaceutical and Medical Devices Act.

    Life SciencesChambers Asia & Pacific
  • He has unparalleled knowledge of how to address regulatory compliance issues in the healthcare sector.

    Life SciencesChambers Asia & Pacific

Ranked Individuals at Mori Hamada (70)

Japan

What success is built on

Chambers is the leading data and intelligence partner for the legal sector.

Explore thought leadership