Department profile
TozziniFreire

Competition/Antitrust

Global Guide 2026 : Brazil

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TozziniFreire

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About

Provided by TozziniFreire

The Antitrust and Competition practice group has extensive experience representing our clients before the Brazilian Antitrust Commission (CADE), including negotiating leniency agreements and cease agreements under the Brazilian Competition Law, as well as handling premerger notification filings and regulatory clearance for complex M&A transactions. The group also provides all stages of antitrust compliance counseling, including developing compliance programs tailored to client-specific needs, to improve risk management and reduce violations.

Recognized as among the cadre of elite antitrust lawyers in Brazil, the team is led by Marcelo Calliari, a former counsel of CADE. The Antitrust and Competition practice is one of the largest in Brazil and one of the firm’s most active, with experience handling hundreds of market concentration cases and major merger and business conduct investigations.

Chambers Review

Provided by Chambers

Competition/Antitrust - Brazil

Band 1

What the Team is Known For

TozziniFreire's prestigious team is widely respected for handling the negotiation of sensitive leniency agreements connected to cartel investigations. Clients further benefit from its multidisciplinary expertise within the competition arena, including merger review proceedings, compliance programmes and defence in anti-competitive conduct cases before CADE. The team is also active in judicial disputes arising from antitrust-related damage claims.

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Work Highlights

Provided by Chambers

  • TozziniFreire represented Getinge in a competition investigation into the exchange of sensitive information about human resources variables.

Strengths

Provided by Chambers

  • TozziniFreire exceeded my expectations. They really treat us as partners, showing high commitment and support.

    Competition/Antitrust respondentGlobal

  • TozziniFreire's work is excellent. The team consistently make an effort to deepen their understanding of our business and our specific needs. They are always very prompt in their responses.

    Competition/Antitrust respondentGlobal

  • TozziniFreire does outstanding work and its team is highly qualified. They possess excellent commercial skills and are always ready to address any questions promptly.

    Competition/Antitrust respondentGlobal

Notable Practitioners

Provided by Chambers

  • Marcelo Calliari
    Marcelo Calliari

    Marcelo Calliari

    Distinguished head of department Marcelo Calliari has a notable reputation for his longstanding expertise in sophisticated domestic and cross-border cartel investigations, as well as the related negotiation of leniency agreements.

    • Marcelo Calliari is an exceptional professional. His analyses are assertive and straightforward. His knowledge in competition matters is a significant advantage.

      Competition/Antitrust respondentGlobal

    • Marcelo has always acted excellently in leading the team and directing actions in critical and complex moments.

      Competition/Antitrust respondentGlobal

    • Marcelo is my go-to if I have any questions regarding competition matters in Brazil. He is very strategic and well known.

      Competition/Antitrust respondentGlobal
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  • Guilherme Ribas
    Guilherme Ribas

    Guilherme Ribas

    Guilherme Ribas is known for his adept handling of competition mandates. He often assists clients with sophisticated merger control proceedings, investigations, leniency agreements and monitoring before CADE.

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  • Tatiana Lins Cruz
    Tatiana Lins Cruz

    Tatiana Lins Cruz

    Tatiana Lins Cruz is well regarded in the market for her activity in competition matters. She often represents clients in mandates involving cartel investigations and negotiation of leniency agreements. She has further experience in antitrust-related damage litigation.

    • Tatiana is a fantastic lawyer.

      Competition/Antitrust respondentGlobal

    • Tatiana is phenomenal. She has great insights when working with CADE and developing strategies.

      Competition/Antitrust respondentGlobal
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  • Marcel Medon Santos
    Marcel Medon Santos

    Marcel Medon Santos

    Marcel Medon Santos is frequently retained by companies to negotiate agreements and conduct investigations related to anti-competitive behaviour, as well as to file merger reviews before CADE. He is also active in judicial disputes involving cartel damage claims.

    • Marcel is a highly competent and experienced partner.

      Competition/Antitrust respondentGlobal

    • Marcel is always capable of understanding our business and needs. His commitment allows him to act with great depth on all occasions.

      Competition/Antitrust respondentGlobal
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  • Patricia Bandouk Carvalho
    Patricia Bandouk Carvalho

    Patricia Bandouk Carvalho

    Up-and-coming lawyer, Patricia Bandouk Carvalho, is praised by the market for her experience in negotiating intricate leniency agreements, cartel investigations and antitrust matters in court.

    • I'm quite happy with Patricia's assistance.

      Competition/Antitrust respondentGlobal
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  • Vivian Fraga
    Vivian Fraga

    Vivian Fraga

    Vivian Fraga is experienced in conducting merger reviews, horizontal and vertical commercial agreements, abuse of dominance and especially cartel investigations. Clients benefit from her years of experience in this field, especially due to her background working at CADE.

    • Vivian Fraga has high technical capacity in the field of competition and antitrust.

      Competition/Antitrust respondentGlobal

    • Vivian is very good, super-fast and always notifies us of everything that's going on.

      Competition/Antitrust respondentGlobal
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Ranked Individuals at TozziniFreire (6)

Brazil

Members

Provided by TozziniFreire

TozziniFreire has rankings in the following guides

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