Marcela Mattiuzzo


VMCA Advogados


Marcela practices in the areas of antitrust and data protection. In the antitrust practice her work involves negotiation of agreements and representation of clients before the Brazilian antitrust authority (CADE) in administrative proceedings and in merger and acquisitions. She also advises clients in risk assessing distribution agreements, analyzing governance and compliance structures, evaluating the competitive risks of commercial practices, among others. Marcela’s clients are from a variety of sectors, such as infrastructure, technology, and agribusiness.

She is also the head of the firm’s data protection area. Her work focuses on adapting corporate policies to the Brazilian and international data legislation, and also representing clients before judicial and administrative authorities. Marcela has participated in several debates regarding the structuring of the new Brazilian data protection public policy, especially after the approval of the country’s General Data Protection Law (LGPD) in 2018. Currently, she serves as coordinator to Ibrac’s Digital Markets Committee LGPD Task Force and is a member of the Steering Committee of the CIPL/IDP project “LGPD implementation and harmonization with international data protection regimes”.

Former advisor and chief of staff for the Office of the President at CADE, Marcela assisted in the handling of cases at the Administrative Tribunal, in the organization and structuring of interventions of authorities at national and international events, and coordinating antitrust advocacy actions, with emphasis on the development of CADE’s Compliance Guidelines and the participation in the editorial coordination for the Journal of Competition Defense.

On behalf of CADE, she also served as Commissioner at the Federal Council for the Fund for the Defense of Collective Rights and representative at the National Strategy for the Fight Against Corruption and Money-Laundering.

Marcela has been authoring several articles regarding competition, regulation, and digital issues, and is also a frequent speaker at seminars in Brazil and abroad, such as the “Competition and Consumer Protection in the 21st Century” seminar, organized by the US Federal Trade Commission (FTC).

Ph.D. candidate in Commercial law, M.A. in Public law, with a dissertation focused on debates about algorithms, discrimination and public policies, and Bachelor of Laws from the University of São Paulo (USP). She did an academic exchange program at the University of Zurich (Switzerland), with studies focused on European economic law, and was a visiting researcher at Yale Law School. She attended the course at the Internet Governance School of and the CopyrightX course, offered in partnership by Harvard University and ITS Rio.

Coordinator of the Competition Law and Digital Economy Center at USP, Marcela was a member of the Constitution, Politics and Institutions group of the same institution. She was a professor and coordinator of the first edition of the course "Data Protection", organized by the Center for Studies in Economic and Social Law (Cedes) and a guest professor in several courses in the area, such as those of the Insper Law School and Data Privacy Brazil. She was also a fellow at the "virtual research clinic" at the Alexander von Humboldt Institute for Internet and Society (HIIG). Marcela is also the director of the Project for Promotion of Academic Dedication (PPDA), which offers monthly financial aid as well as orientation, so that low-income students can develop their full potential during their graduation at USP, becoming the best professionals they can be.

Portuguese, English, Spanish, and German

- “Algorithms and Big Data: Considerations on Algorithmic
Governance and its Consequences for Antitrust Analysis” (Revista de Economia Contemporânea — Journal of Contemporary Economics, v. 23, n. 2, mai/ago 2019).
- The Brazilian Data Protection Policy and its Impacts for Competition Enforcement (Competition Policy International “, v. 2, p. 19-23, 2019), co-author.
- Online Advertising Platforms and Personal Data Retail: Consequences for Antitrust Law (Competition Policy International Antitrust Chronicle , v. 7, p. 1, 2015).
- Antitrust Compliance Programs: The Brazilian Experience (Competition Law and Policy in Latin America: Recent Developments, Wolter Kluwers, 2017, v. ?, p. 59-71).
- Business Models and Big Data: How Google Uses Your Personal Information (Privacidade em Perspectivas. Lumen Juris, 2018, v. 1, p. 1-256).


Contributions by Marcela Mattiuzzo

  • Sandbox for AI and Data Protection in Brazil | Sandbox para IA e Proteção de Dados no Brasil
    Speaker at In-Person São Paulo KnowledgeNet: 6 Dec. 2023
  • Moderator at IAPP Europe Data Protection Congress 2020 - Cancelled
  • Data Protection and Competition: Building and Burning Bridges
    Moderator at IAPP Europe Data Protection Congress 2019