Renata O. Pires Castanho

Hugo Funaro is a top attorney recognized by Best Lawyers in the practice area(s) of Tax Law. Hugo, who practices law in São Paulo, Brazil, has been recognized since 2018. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Hugo is held by other top lawyers in the same geographic and legal practice area.

Rubens Bezerra Filho has 25 years of experience and is a partner in the contracts and corporate area. Over the years, Rubens has worked in transactions involving natural and legal persons, both domestic and foreign, such as mergers and acquisitions, corporate reorganizations, associations involving Brazilian and foreign entities, corporate structuring of real estate projects, foreign investments in Brazil, idealization, development and implementation of assets protection planning and successi...

Thiago Ramos Barbosa is a top attorney recognized by Best Lawyers in the practice area(s) of Labor and Employment Law. Thiago, who practices law in São Paulo, Brazil, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Thiago is held by other top lawyers in the same geographic and legal practice area.

Marina Gaensly Blattner holds a graduate and master’s degree in public law from the Universidade do Estado do Rio de Janeiro (UERJ) and a LL.M from the London School of Economics and Political Sciences (LSE). She was a consultant member of the National Commission for Constitutional Studies of the Federal Council of the OAB. She is also a member of the São Paulo Lawyers Institute (IASP).

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...

Partner at Wald, Antunes, Vita e Blattner Advogados (São Paulo, Brazil); LLB, Master in Laws and PhD at University of São Paulo Law School; LL.M. in International Business Regulation, Litigation and Arbitration at NYU School of Law (Arthur T. Vanderbilt Scholar); Vice-President of the Brazilian Bar’s Special Arbitration Commission; Director at the Mediation and Arbitration Center at the Brazil-Portugal Chamber of Commerce; CIArb Fellow; Author of several articles on arbitr...

Mário Luiz Oliveira da Costa is a top attorney recognized by Best Lawyers in the practice area(s) of Tax Law. Mário Luiz, who practices law in São Paulo, Brazil, has been recognized since 2018. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Mário Luiz is held by other top lawyers in the same geographic and legal practice area.

Hamilton Dias de Souza is a top attorney recognized by Best Lawyers in the practice area(s) of Tax Law. Hamilton, who practices law in São Paulo, Brazil, has been recognized since 2010. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Hamilton is held by other top lawyers in the same geographic and legal practice area.

Specialist in Tax Litigation and Advisory, Fernando Westin has a robust background in leading tax litigation teams for both domestic and multinational companies. As a partner focused of the Tax Litigation team in São Paulo, Westin excels in administrative and judicial tax disputes, due diligence processes, and participation in amnesty and installment programs. Recognized as a Highly Recommended Lawyer by ITR World Tax, Highly Recommended by Chambers Brazil, and a Highlight in Best Lawy...

Arnoldo Wald Filho holds a Bachelor Degree in Law from Cândido Mendes University (1986) and a certificate in Advanced Mediation from Harvard Law School (2017). He is currently Federal Counsel of OAB São Paulo, President of the Institutional Relations Commission of OAB/SP, President of the Center for Mediation and Arbitration of the Portuguese Chamber of Commerce in Brazil and arbitrator of the Ciesp/Fiesp and FGV Chambers. Since 1986, he is Honorary Consul of Monaco in Brazil. Fo...