Ranked in 1 Practice Areas
3

Band 3

Competition/Antitrust

Japan

13 Years Ranked

About

Provided by Vassili Moussis

Asia-Pacific

Practice Areas

Vassili regularly represents clients in transactional competition law matters including complex mergers and joint ventures. He also has significant experience representing clients involved in international cartel investigations. Vassili has practised competition law for over 25 years out of Tokyo, Brussels and London. As a result, his practice is both focused on inbound Japanese competition and regulatory advice and on outbound EU and international antitrust/regulatory matters. Vassili has been closely involved with the opening of AMT’s Brussels office in 2024.

Career

DG COMP Stage

Professional Memberships

Law Society of England and Wales, 2000

Dai-ni Tokyo Bar Association (Japan), 2010

Publications

Chambers Global Practice Guides Cartels 2025 - Law & Practice (2025)

Competition Law in Digital Markets (Japan) (Practical Law, 2025)

GCR - Market Review Merger Control 2025 – Japan (2025)

GCR - Merger Remedies Guide - Edition 6 (Japan chapter) (2025)

Languages Spoken

English (working language)

Greek (first language)

French (first language)

Japanese (fluent)

Spanish (intermediate)

Italian (intermediate)

Education

European School, Brussels

European Baccalaureate

1977 - 1989

Catholic University of Louvain

Master of Laws

1989 - 1994

University College London

LL.M.

1994 - 1995

University College London

Ph.D.

1994 - 2003

Chambers Review

Provided by Chambers

Chambers Asia & Pacific

Competition/Antitrust - Japan

3
Band 3
Individual Editorial
Vassili Moussis specialises in European and international competition law matters. His inbound and outbound practice encompasses transactional and behavioural advice.

Contributions

Latest contributions provided by Vassili Moussis

Global Practice Guide
Vassili Moussis
Azusa Hongo
Shigeyoshi Ezaki
Takeshi Ishida
Yoshiharu Usuki
Authored by
Vassili Moussis, Azusa Hongo, Shigeyoshi Ezaki, Takeshi Ishida, Yoshiharu Usuki
Article • May 2025

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