Our professionals
Roberto Quiroga
Areas of expertise
Experience
One of the firm’s founding partners, Roberto Quiroga held the position of managing partner for two terms between 2009-2015 and from 2020 until March 2024. As a lawyer, his career has focused on tax law, acquisitions, corporate reorganizations, and financial and capital markets, assisting clients both in Brazil and abroad.
Quiroga has played a leading role in pioneering Mattos Filho’s pro bono work in Brazil for over 20 years, helping to build upon our firm’s cultural values and enabling us to make a positive impact on society. He was also fundamental in establishing our innovative governance model (which eventually became a case study at Harvard University), assuring the firm’s long-term stability and success within the Brazilian legal sector.
Quiroga is a professor of Tax Law at the Law School of the University of São Paulo (USP) and in the Master’s Program at the Fundação Getulio Vargas Law School (FGV).
Education
Bachelor of Laws – Universidade Presbiteriana Mackenzie;
Master of Tax Law – Pontifícia Universidade Católica de São Paulo (PUC-SP);
Doctor of Tax Law – Pontifícia Universidade Católica de São Paulo (PUC-SP).
Recognitions
Chambers Brazil – Tax: Litigation (2013 – 2024), Tax (2009 – 2019);
Chambers Global – Tax: Litigation (2000 – 2024), Tax (2000 – 2019);
Latin Lawyer 250 – Pro Bono (2019), Tax (2012 – 2025);
LACCA Approved – Tax: Thought Leaders (2019 – 2025), Recognized (2015 – 2024);
The Legal 500 – Tax: Leading Individual (2012 – 2022), Tax Advisory: Hall of Fame (2023 – 2024) Tax Litigation: Hall of Fame (2025);
Análise Advocacia – Tax (2006 – 2024), Financial Transactions (2007 – 2015; 2017 – 2019, 2021), Banks (2014 – 2024), Finance (2014 – 2020, 2022); Insurance (2015, 2017 – 2024), São Paulo (2014 – 2024);
Euromoney Expert Guides – Best of the Best Latin America: Tax (2016, 2020 – 2021);
International Tax Review – Tax Controversy (2011 – 2023);
Involve – OUTstanding – LGBT+ Role model lists – Ally Executive (2020 – 2023);
Lexology Index Brazil – Administrative Litigation (2015 – 2023); Corporate Tax (2014 – 2023) Thought Leaders Brazil: Administrative Litigation (2021 – 2024), Thought Leaders Brazil: Corporate Tax (2021 – 2023) and Thought Leaders Brazil: Law Firm Management (2024);
Lexology Index Global – Corporate Tax: Advisory (2018 – 2023) Global Thought Leaders: Corporate Tax (2019 – 2023).
Mattos Filho announces new partner for its New York office
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Larissa Arruy returns to Mattos Filho’s Banking & Financial Services practice
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Mattos Filho announces next managing partner, effective early 2024
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Mattos Filho promotes eight associates to partnership
Mattos Filho launches innovation program focused on startups
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Mattos Filho has a new managing partner
Mattos Filho announced that Pedro Whitaker de Souza Dias (pictured) take up his role as the firm’s new managing partner effective Wednesday, April 3. Following a ten-month leadership transition period with former managing partner and firm founder Roberto Quiroga, Dias will now lead the firm’s management for the next three years. His goal is to continue the legacy of the founding partners, strengthen business development, and ensure the firm’s stability and long-term success.
Click here and read the article on The Latin American Lawyer.
Pedro Whitaker de Souza Dias takes helm of Mattos Filho
“When you think that you have nothing else left to achieve, you are wrong: you always need to think about what more can be done,” says Pedro Whitaker de Souza Dias, Mattos Filho’s new managing partner. Instead of resting on his laurels, Dias has his sights set on opportunities and strategic growth for Brazil’s largest law firm.
Dias officially took over as managing partner of the Elite firm today, replacing Roberto Quiroga.
Click here and read the article on Latin Lawyer.
Mattos Filho announces new partner for its New York office
Mattos Filho has announced Paula Vieira (pictured) as the new partner in charge of the firm’s New York office. With a strong background in both Brazilian and cross-border M&A transactions, including private equity, Paula is a member of Mattos Filho’s Corporate/M&A practice and International Committee, where she coordinates the firm’s initiatives for business development outside Brazil.
Click here and read the article on The Latin American Lawyer.
Areas of expertise
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