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Marcio de Carvalho Silveira Bueno

Marcio de Carvalho Silveira Bueno

Practice Groups

Antitrust, Compliance and Investigations


Office: São Paulo
Phone: (55 11) 50865298


Professional experience

Marcio has over 15 years of experience with practicing competition law and representing domestic and multinational companies before CADE and Judicial Courts in connection with antitrust investigations and merger control. Also assists clients with risk assessment of business practices and with the implementation of corporate compliance programs; as well as with regulatory intelligence. Marcio has been a  frequent speaker in seminars and conferences. Marcio took part on CADE’s internship program (1998).


Recognized as a leading antitrust lawyer in Brazil by Chambers Latin America, Who’s Who Legal, Legal 500, Euromoney Expert Guides, Latin Lawyer 250 and other relevant international legal guides.


  • English


  • Graduate of the Law School of the Pontifícia Universidade Católica de São Paulo (PUCSP), 1999.

Additional activities:

  • Director of IBRAC – Brazilian Institute for Studies on Competition, Consumer Affairs and International Trade (IBRAC) (since 2012).
  • Vice-President of Competition Commission at the Brazilian Bar Association, São Paulo Section (2010-2012).
  • Non-Governmental Advisor (NGA) of International Competition Network (ICN).


  • Co-author of the article Cartel Fines in Brazil Could Climb Even Higher as Cade Seeks to Offsett Gains from Infringement, published in Cartel & Criminal Practice Committee Newsletter Issue 2, 2016.
  • Co-author of "Comentários à Nova Lei de Defesa da Concorrência" “Commentaries to the new competition law”), Método, 2012.
  • Limites para o CADE rever suas decisões em Atos de Concentração (Limits to CADE Review their Decisions in Acts of Concentration) chapter in Concentração de Empresas no Direito Antitruste Brasileiro (Concentrations in Brazilian Antitrust Law), Singular, 2011.
  • Insuficiência dos Parâmetros de Subsunção de Contratos ao Artigo 54 da Lei 8.884/94 (Insufficiency of Parameters set forth on Article 54 of Law 8884/94 for the review of Agreements) chapter in Desafios Atuais do Direito da Concorrência (Current Challenges of Competition Law), Singular, 2009.
  • "Enforcement of Competition Law: Brazil Chapter", International Comparative Legal Guides, 2009.
  • "Competition Litigation: Brazil Chapter", International Comparative Legal Guides, 2013.
  • Prescrição em Atos de Concentração (Statute of Limitation on Merger Review) chapter in Revista de Direito Administrativo 243/2006 (Administrative Law Magazine), FGV Direito Rio, 2006.
  • Several other articles published in Brazilian and international journals and reviews.

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