LAWYER PROFILE
Marcio Soares

Marcio Soares

Brazil 2026

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Ranked in 1 practice area

About

Provided by Mattos Filho

Brazil: Contentious

Practice Areas

Antitrust; Corporate invetigations;

Career

Marcio has extensive experience in competition matters, representing domestic and foreign clients from various sectors of the economy before the Administrative Council for Economic Defense (Cade) in merger cases, investigations of anticompetitive conduct – especially cartels and abuse of dominant position – negotiating leniency agreements and cease-and-desist agreements (TCCs), as well as in antitrust-related lawsuits and arbitration, competition compliance and general antitrust counseling.

Marcio serves as co-Chair of the Mergers Working Group of the International Bar Association’s (IBA) Antitrust Committee, co-Chair of the Task Force on Competition and Sustainability of the Antitrust Committee of the ICC-Brazil and is a member of the International Committee of the Antitrust Section of the American Bar Association (ABA). Marcio has authored a number of specialized articles on antitrust law published in Brazil and abroad.

Education

Universidade do Estado do Rio de Janeiro (UERJ)

Bachelor of Laws

Universidade do Estado do Rio de Janeiro (UERJ);

Postgraduate Degree in Private Law

Columbia Law School

Master of Laws (LL.M.)

Languages Spoken

English;

Portuguese;

Chambers Review

Provided by Chambers

Chambers Brazil: Contentious

Competition/Antitrust - Brazil

Band 1
Band 1

Individual Editorial

Marcio Soares is held in high esteem by clients and peers alike for his adept handling of a wide range of competition mandates, including sophisticated merger control proceedings and complex investigations before CADE.

Strengths

Provided by Chambers

  • Marcio Soares's service is impeccable.

    Competition/AntitrustChambers Brazil: Contentious
  • Márcio Soares is an extremely senior and highly experienced professional. He has a deep understanding of our business and our risk profile, which makes his guidance consistently precise and perfectly aligned with our reality. In addition to his strong technical expertise, he stands out for his availability, strategic vision and ability to build a genuine partnership with the in‑house team.

    Competition/AntitrustChambers Brazil: Contentious
  • Clients can always count on Marcio Soares for thoughtful and detailed advice.

    Competition/AntitrustChambers Brazil: Contentious

Ranked Individuals at Mattos Filho (137)

Brazil

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