Advocacia Del Chiaro > Sao Paulo, Brazil > Firm Profile

Advocacia Del Chiaro
CEP 01451-000 SÃO PAULO, SP

Brazil > Competition and antitrust Tier 1

At well-known antitrust boutique Advocacia Del Chiaro, ‘the partners act proactively, seeking specific solutions for the client’s business‘. The firm is particularly prominent in investigations involving potential anti-competitive conduct, and is entrusted by household name companies in sensitive cases. Its representation of Google in CADE’s Android investigation, which examines conduct previously investigated by the European Commission in its high-profile case, is just one example. The firm has seen recent growth, with the promotion of the highly regarded Luiz Felipe Rosa Ramos to partner in December 2020, and the hire of new associates Carolina Furlani and Maria Eduarda Scott in October and November 2020, respectively. The department is jointly led by seasoned antitrust expert and name partner José Del Chiaro, who is noted for his ‘ample technical capacity‘ and ‘good relationship with the legal community‘, and the ‘spectacularAdemir Antonio Pereira Júnior, who ‘stands out for his dynamism and leading role‘. Associate Yan Villela Vieira also receives praise.

Practice head(s):

Jose Del Chiaro; Ademir Antonio Pereira Júnior


The firm presents solid technical knowledge of the subject under discussion and a strategic approach that goes beyond material law. In terms of competition law, they have high performance, including academic, from the publication of articles and participation in discussion forums. In addition, they have a relevant exchange with other offices and specialists.

Quick responses. Accessible. Competitive costs.

José Del Chiaro, partner, ample technical capacity, good relationship with the legal community, strategic and provocative vision. Luiz Felipe Rosa, partner, with solid technical skills, project leadership skills and good relationship with the legal community.’

The office has different knowledge in the area of defense of competition and high reputation. The partners act proactively, seeking specific solutions for the client’s business.’

Ademir Pereira Jr. stands out for his dynamism and leading role, deep knowledge of the theme and sectors of the client, with availability and business vision.’

Luiz Felipe Rosa Ramos: intelligent, well prepared, productive, easy to deal with, objective.’

What makes Advocacia Del Chiaro unique is the quality of the service provided, the availability of partners and associates and treatment with clients.

The partner Ademir Pereira Junior is spectacular! Excellent technique and always accessible and committed to work. Associate Yan Villela Vieira also does an excellent job.’

Key clients












Tokio Marine Kiln

Gilead Sciences




Banco Fibra

Banco Inter



Associação Neo

Algar Telecom






Oji Group




Work highlights

  • Acted as lead counsel for Google in the Android and Local Universal investigations.
  • Representing TMK in in a recent investigation focused on the alleged exchange of sensitive information by brokers and underwriters in the aviation and aerospace insurance industry.
  • Represented Google in the merger review of its acquisition of Fitbit.

Advocacia Del Chiaro is a leading law firm working in the area of competition/antitrust, regulation and data protection. For almost three decades, we have advised major national and multinational companies and worked closely with several international law firms, handling some of the country’s most complex antitrust cases (including litigation) and matters related to government regulation.

The firm was founded in 1991 by Jose Del Chiaro, formerly the head of the Government’s Secretariat of Economic Law (SDE) and head of CADE (Administrative Council of Economic Defense). Headquartered in Sao Paulo, the country’s economic heartland, we also maintain our own fully-integrated office in the federal capital of Brasilia to ensure close contact with relevant agencies and courts.

Long-term success: Our experience shows that long-term, strategic, business-to-business relationships yield consistent quality, careful alignment of legal strategies with a client’s business and product goals, and predictability of results.

Advantage of specialization: We are internationally recognized as a leading Brazilian law firm specialized in antitrust and competition (including litigation) and matters related to government regulation. Clients come to and stay with us for the firm’s unparalleled experience and specialization. We are not a large, multi-service law firm; the goal was always to build a world-class boutique that offers clients results-driven excellence within the chosen field of specialization. Today’s list of top-flight international and Brazilian companies that seek the firm’s advice is a testament to the success of this vision.

Select cases: Our firm has worked in several landmark cases that constitute important precedents in Brazil. Our experience comprises the most complex antitrust/competition cases regarding cartels, abuse of dominance, IP & Antitrust, merger review and antitrust litigation. More recently, our practice has evolved to deal with several government regulation matters in different industries. We have advised major national and multinational companies, including Air Liquide, Alcoa, Bayer, Coca-Cola FEMSA, Ericsson, General Motors, Google, Heineken, Hypermarcas, Itau Bank, Kimberly-Clark, Mahle, Mondelez, Lundbeck, MAN, PhilipMorris, Renault, Trafigura, Tecban and Volkswagen.

Main areas of practice
Antitrust/competition: full range of antitrust issues, including anti-competitive behavior, merger control and compliance. Representation of clients in investigations at the Brazilian Antitrust Agency (CADE).

Antitrust/competition litigation: representation of clients in antitrust matters litigated in Federal or State Courts.

Commercial litigation: representation of clients in complex commercial matters litigated in Federal or State Courts.

Regulation: representation of clients in matters involving regulatory agencies, including the National Telecommunications Agency (Anatel), the National Terrestrial Transportation Agency (ANTT), the National Waterway Transportation Agency (ANTAQ).

Data privacy: advice in issues related to the data privacy regulation.

Trade defense: advice in proceedings related to the application of antidumping safeguards and countervailing measures.