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Future Leaders

Future Leaders

Ademir Pereira Junior

Ademir Pereira Junior

Advocacia José Del ChiaroAv. Brigadeiro Faria Lima 2012, 9º andar, cj. 91São PauloBrazil01451-000

Future Leader

National Leader

Brazil - Competition

Professional Biography

WWL Ranking: Recommended

WWL says

Ademir Pereira Júnior is a top practitioner who is extensively praised as “a valuable asset” by his peers. Sources commend him for “providing creative solutions” to complex matters across the telecoms, pharmaceutical and automotive sectors.


Ademir Antonio Pereira Jr is a partner and co-head of the antitrust/competition practice at Advocacia Jose Del Chiaro, a leading Brazilian law firm specialised in antitrust and competition.

Ademir has acted in several complex antitrust and competition cases and has assisted companies in the digital economy in navigating a changing regulatory landscape.

His experience comprises the entire range of antitrust issues including merger review, cartel investigations and several landmark unilateral conduct cases. He has unparalleled experience in Brazil in cases involving the interface between IP and antitrust, and antitrust discussions in fast-developing industries like internet, mobile and computer software. He has also extensive experience with traditional industries such as steel, mining, energy and auto parts. 

Ademir is regular antitrust counsel to major international companies such as Google, Mondelez, ArcelorMittal, Ericsson, Kimberly-Clark, Heineken, Nutanix and Volkswagen. Recent mandates include representing companies in matters shortlisted for GCR's Behavioral Matter of the Year (Americas) award and for GCR's Merger Control Matter of the Year (Americas) award in 2019.

Ademir holds a PhD and a master's degree in law from the University of São Paulo. He also holds a master's degree (LLM) in law, science and technology from Stanford University, where he is currently a fellow at the Stanford Center for Internet and Society. Ademir is a member of the national competition commission of the Brazilian Bar Association. He has co-authored books and published several articles on competition law, internet regulation and financial regulation in specialised reviews.

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