Mirian Kruel

Mariana is the Managing Partner and Head of Corporate and M&A at Leite, Tosto e Barros Advogados, bringing over two decades of experience in Corporate Law, Mergers & Acquisitions, Governance, Compliance, and Data Protection. As Managing Partner, she leads the firm’s strategic direction and ensures operational excellence across finance, IT, marketing, and administration—combining leadership vision with technical and business precision. As Head of Corporate and M&A, Mari...

José Roberto Sampaio é o sócio fundador do escritório José Roberto Sampaio Advogados e atua em parceria com o Basilio Advogados em demandas na área do Contencioso e Arbitragem. Antes de fundar seu próprio escritório de advocacia, José Roberto foi sócio do Taunay, Sampaio e Rocha Advogados, com ampla experiência em contencioso e arbitragem. José Roberto representa clientes em questões de contencioso e arb...

André Serrão holds Bachelor’s (1994) and Master’s (1999) degrees in Law from the Federal University of Brasília. He is the founder partner of Serrão Advogados and has recognized expertise in energy law, specifically assisting the pivotal players of the Brazilian power sector (generation, transmission, distribution and trading companies of electric energy) in key regulatory issues and disputes. He also has a very strong practice in supporting and advisin...

Antonio Carlos de Oliveira Freitas is a top attorney recognized by Best Lawyers in the practice area(s) of Agriculture & Rural Affairs. Antonio Carlos, who practices law in São Paulo, Brazil, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Antonio Carlos is held by other top lawyers in the same geographic and legal practice area. He is Master's degree in Business Law from Fundação Get&u...

Priscila Peresi brings over 28 years of distinguished experience in Labor and Employment Law, with a robust track record in both litigation and advisory services. She has represented major corporations in complex labor disputes, led collective bargaining negotiations, and developed strategic frameworks for litigation risk mitigation. Her practice also encompasses the management of administrative proceedings, legal support for human resources operations, and compliance-oriented guidance. Prisc...

Rafael Fiuza Casses is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation and Tax Law. Rafael Fiuza, who practices law in Rio de Janeiro, Brazil, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Rafael Fiuza is held by other top lawyers in the same geographic and legal practice area.

Rafhael Frattari is a partner of Vilas Boas, Lopes e Frattari Advogados with more than 20 years of experience in Tax Law. He has acted in the litigation of several companies, especially in the steel, mining, and energy sectors. He currently is ahead of VLF’s tax teams in all operations, including Business Restructuring and M&A operations. Frattari was graduated from Universidade Federal de Minas Gerais (1998) and holds a master’s degree (2003) and a Doctorate (2008) from the s...

Adriana Campos Conrado Zamponi is a partner at Wald, Antunes, Vita e Blattner Advogados, has an LLM in Business Law from Ibmec and has completed mediation courses offered by the France-Brazil Chamber of Commerce (CCFB) in cooperation with the Centre de Médiation et d’Arbitrage Paris (CMAP) and the Brazilian Center for Mediation and Arbitration (CBMA). She is also a member of the Brazilian Arbitration Commission (CBAR).

Daniel Vilas Boas is a partner of Vilas Boas, Lopes e Frattari Advogados with more than 20 years of experience in Civil and Corporate Litigation. He focuses on managing special litigations, aiming to execute the best strategy with technical expertise. Currently, he has been conducting cases of great impact in Commercial Law. Vilas Boas was graduated from Universidade Federal de Minas Gerais (1998), and is a Master and Doctor of Law by Universidade Federal de Minas Gerais (2003 and 2008). Besi...

Igor Garbois Fernandes Ribeiro is an associate attorney at Wald, Antunes, Vita e Blattner Advogados with over 13 years of experience in litigation and insolvency. Igor is a lawyer graduated from the Universidade Cândido Mendes (Ucam), a postgraduate degree in Corporate Finance and Capital Markets from the Institute of Postgraduate Studies and Research in Administration at the Federal University of Rio de Janeiro (UFRJ), and a specialty in Judicial Administration from the School of Judic...