Brazil Guide 2026 : Brazil
Ranked Individuals
Provided by Matter, Boettcher, Zanini e Souza Advogados
The firm represents clients in corporate and commercial arbitration cases before the leading arbitration institutions in Brazil, including high-profile shareholder disputes and contractual claims. The firm’s partners also regularly act as arbitrators in proceedings related to M&A, investment transactions, project finance and other commercial law matters.
MBZ has extensive expertise in commercial and civil litigation, representing clients before State and Federal Courts. MBZ limits the number of cases handled by its teams, focusing on the strategic handling of each and every case while maintaining close interaction with clients from the preliminary stages of the conflict onwards. The firm’s lawyers also act as negotiators in connection with settlements agreements.
Further contributing to the firm’s recognition and successful track-record in M&A transactions is the assistance the firm provides to clients in tackling post-merger corporate and regulatory issues, including in dispute resolution and often in connection with the most relevant corporate transactions in southern Brazil.
Provided by Chambers
Matter, Boettcher, Zanini e Souza Advogados is a local transactional titan that also maintains a well-regarded dispute resolution practice. Companies from the transportation, infrastructure and beverage sectors feature in its client list. The team also handles class action mandates and lawsuits concerning infrastructure projects, as well as contract disputes.
Provided by Chambers
MBZ represented Ipiranga, Repsol and SULGAS in a dispute arising from a shareholders’ agreement breach involving enforcement and payment proceedings.
Provided by Chambers
MBZ has strong technical capability, providing responsive and accessible support through an experienced and diligent team that keeps clients consistently informed.
MBZ has in-depth knowledge, presenting alternatives and counterpoints that build confidence in solving complex issues.
MBZ has excellent capability in handling complex matters, with a team of qualified professionals across various industries.
Provided by Chambers
Carlos Klein Zanini is a well-established and seasoned practitioner with strong activity in consumer and commercial law disputes. He also offers notable knowledge leading complex cases in corporate law.
Carlos stands out across complex matters due to his exceptional intellect and work capacity.
Carlos has strong professional and managerial capabilities, performing effectively across complex matters.
Carlos Klein Zanini is noted for his extensive knowledge and ability to clearly explain complex topics, supporting well-informed decision-making.
Gustavo Sanseverino, head of the department, represents prominent clients in high-stakes disputes across the region, demonstrating strong leadership in complex litigation and arbitration.
Gustavo Sanseverino is my main point of contact. He has exceptional technical skills, strong legal knowledge and attention to detail, particularly in procedural matters.
Gustavo is an excellent professional. He works with a strong understanding of complex cases and a solid business perspective.
Gustavo is a specialist in restructuring and insolvency, recognised for his strong technical knowledge and dedication to his work.
Dispute Resolution: Rio Grande do Sul
Dispute Resolution: Rio Grande do Sul
Provided by Matter, Boettcher, Zanini e Souza Advogados
Gustavo Sanseverino
View profile of Gustavo SanseverinoCarlos Klein Zanini
View profile of Carlos Klein Zanini
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