Caio Mario da Silva Pereira Neto

Caio Mario da Silva Pereira Neto holds a Bachelor of Law from the University of São Paulo (Brazil) and Master of Laws (LL.M.) and Doctorate (J.S.D.) degrees from Yale Law School (USA). He is a Law Professor at Getulio Vargas Foundation Law School in São Paulo (FGV), where he leads the Research Nucleous on Competition, Public Policy, Innovation and Technology (COMPPIT). He is the author of several books and articles, published in the US, EU and Brazil, with a research focus on competition law and regulation. Caio has extensive experience in both public and private sectors. In public service, he held office as Director for Competition at the Secretariat of Economic Law of the Ministry of Justice (SDE). In private practice, he is the founding partner and co-head of the antitrust and regulation groups at Pereira Neto | Macedo | Rocco Advogados (PNM).

Brazil’s Efforts To Address Election Disinformation Illustrate the Difficulties of Protecting the Marketplace of Ideas

Caio Mario S. Pereira Neto reflects on the discussions at the Stigler Center’s 2025 Antitrust and Competition Conference and addresses the problems that confront Brazil’s courts as they navigate the tradeoffs between removing disinformation that threatens electoral integrity and observing constitutional protections for freedom of expression.

Designing Better Antitrust Remedies for the Digital World

Even when antitrust enforcers and courts get it right when finding an anticompetitive infringement, they constantly end up imposing remedies that are inadequate to...

Revisiting Ohio vs. American Express: It’s Time for a More Nuanced Approach to Market Definition

Nearly three years ago, the Supreme Court decided the case of Ohio vs. American Express, which turned out to be one of the most...

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