JP
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Partner

Masayuki Atsumi

Bar Admissions

admitted in Japan, 2009
admitted in New York, 2016
admitted in England & Wales, 2017
Daini Tokyo Bar Association

Contact Information

TEL +81-3-6270-3516
FAX +81-3-6270-3501

Languages

Japanese, English

Offices/Locations

Tokyo Head Office, Texas

Background

Kobe University School of Law (J.D., 2006)
Japan Fair Trade Commission (2006 - 2008)
Mori Hamada & Matsumoto (2009 - 2017)
University of Chicago Law School (LL.M., 2015)
Covington & Burling LLP (on secondment, 2015)
U.S. Federal Trade Commission (on secondment, 2016)
General Manager for Compliance, LIXIL Corporation (2017 - 2018)
Outside Director, Audit and Supervisory Committee Member, ARCLANDS CORPORATION (2022 - present)
Audit & Supervisory Board Member, TOKAI Holdings Corporation (2023 - present)
Auditor, Electric Power Reserve Exchange (2024 - present)
Lecturer at the Kobe University Graduate School of Law (2024 - 2025)

Practice Areas

Publications

2025.12.04 Chambers Global Practice Guides – Anti-Corruption Japan 2026: Trends and Developments
Articles
2025.08.12 Lexology Panoramic - Complex Commercial Litigation 2026: Japan Chapter
Articles
2025.06.10 Legal Update Series #41: Key Corporate Legal Developments to Note in June 2025
Articles
2025.01.11 GIR Know how – Anti-money Laundering 2024: Japan
Articles
2024.11.22 Chambers Global Practice Guides – Anti-Corruption Japan 2025: Trends and Developments
Articles

Seminars

News

2026.10.01 Notice of Opening of our Texas Office
Notice
2026.09.23 Masayuki Atsumi Recognised in Lexology Index: Japan (GCR) 2026
Awards & Rankings
2026.09.22 Haruka Murata and Masayuki Atsumi have been nominated in asialaw Awards 2026
Awards & Rankings
2026.07.30 Masayuki Atsumi Recognised in Lexology Index: Competition (GCR) 2026
Awards & Rankings
2026.04.16 The Best Lawyers - 2027 edition
Awards & Rankings
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