Guilherme Athayde Porto

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).

Senior Partner at “A. Lopes Muniz Advogados Associados in São Paulo, Brazil, since 2004, with more than 40 years of experience working as a lawyer, both in-house and as a legal consultant. Author of several articles on Life Sciences Regulatory, Business Ethics, and Intellectual Property, published in different media with copies maintained at www.marcoslevy.blogspot.com.br Director of Legal and Corporate Affairs of MSD Brazil (Merck & Co, Inc.) from 1991 to 2002, Legal Directo...

Specialist in International Tax and Trade with articles published in Brazil and abroad, Ayres Moreira is an Alumnus of the Training Program in Policy and Trade at the Brazilian Embassy in Washington and former Professor of International Tax Law at the Pontifical Catholic University of Minas Gerais (PUC Minas) and at the Getúlio Vargas Foundation (FGV). Ayres Moreira is a frequent speaker in Seminars and Conferences in Brazil and abroad, a full member of the Tax Commission of the Brazil...

With a highly specialized profile, in the indirect taxes area, Mauri serves domestic and multinational companies, taking part in several tax and corporate restructuring transactions and following up on new structures.

Maria Tereza Dias is an executive partner of Vilas Boas, Lopes e Frattari Advogados, responsible for coordinating the administrative/regulatory law team, an area in which she has over 20 years of experience, including previous work in administrative and judicial litigation and in consultancy. Maria Tereza was graduated from Universidade Federal de Minas Gerais (1998) and also has a Master and PhD in Administrative and Regulatory Law by Universidade Federal de Minas Gerais (2001 and 2007). Bes...

Clarissa Marcondes Macéa is a partner at Wald, Antunes, Vita e Blattner Advogados, holds a bachelor’s degree from the University of São Paulo (USP), a Master of Laws (LL.M.) from Harvard University, and attended the École Nationale d’Administration – ENA (CISAP). She has worked as a Law Clerk at the Brazilian Supreme Court (2017-2020), was the Legal Head for the Assistance and Social Development Secretariat of the City of São Paulo (2015-2017), an...

Deise Galvan Boessio is a top attorney recognized by Best Lawyers in the practice area(s) of Tax Law. Deise, who practices law in Porto Alegre, Brazil, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Deise is held by other top lawyers in the same geographic and legal practice area.

Gustavo André Muller Brigagão Practice Area Tax law with emphasis on administrative litigation and indirect taxation, dealing with matters related to industry, commerce and services sector, focused in on the oil industry, telecommunication market, e-commerce, electric energy, information technology, clothing industry, professional entities, among others. In addition, he has been deeply involved with the tax structuring of major sporting and entertainment events in Brazil (2014 W...

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...

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...