Marcio Dias Soares > Mattos Filho > Sao Paulo, Brazil > Lawyer Profile

Mattos Filho
SÃO PAULO, SP, CEP 01403-001

Work Department

Antitrust/ Corporate Investigations




Marcio has consistently assisted domestic and international clients from various industries on all aspects of antitrust law, including high profile merger review cases, cartels and dominance investigations, antitrust-related litigation and general antitrust counseling


Portuguese and English


Co-Chair of the Cartels Working Group at the Antitrust Committee of the International Bar Association (IBA); Member of the Brazilian Institute of Competition, Consumer Affairs and International Trade Law Review (IBRAC)


Bachelor of Laws, Universidade do Estado do Rio de Janeiro
Post-Graduation in Private Law, Universidade do Estado do Rio de Janeiro
Master of Laws (LL.M.), Columbia Law School

Lawyer Rankings

Brazil > Competition and antitrust

(Leading individuals)

Marcio Dias SoaresMattos Filho, Veiga Filho, Marrey Jr. e Quiroga Advogados

A first choice for Brazilian merger control cases‘, Mattos Filho, Veiga Filho, Marrey Jr. e Quiroga Advogados has the size, experience and resources to handle complex merger filings involving major companies in domestic and international transactions. Of particular note is the firm’s impressive track record in negotiating remedies in merger cases with CADE. The competition team is also well versed in conduct investigations, including in the negotiation of leniency agreements and settlements. Its clients are active across multiple sectors, and benefit from the firm’s full-service offering, which allows it to field multi-disciplinary teams to cover related issues involving regulatory, corporate and compliance matters, among others. Renata Fonseca Zuccolo Giannella and Lauro Celidonio Gomes dos Reis Neto stand out for their ability to ‘assess with a high degree of accuracy the outcome of a case and to then strategically work towards achieving this outcome‘. In a significant move, Eduardo Frade joined the firm from Vinicius Marques de Carvalho Advogados in August 2021. Other key contacts include Michelle Marques Machado, Marcio Dias Soares and New-York based antitrust partner Amadeu Ribeiro. Senior associates Frederico Bastos Pinheiro Martins, Ana Carolina Estevão and Paula Camara Baptista de Oliveira are also noted.