Partner Profile

Thiago Luís Sombra

Mattos Filho, Veiga Filho, Marrey Jr e Quiroga Advogados


LL 250


Thiago’s practice focuses on technology, compliance and public law, and in particular on anti-corruption investigations handled by public authorities and regulators, data protection, cybersecurity and digital platforms. He was awarded as one of the world’s leading young lawyers in anti-corruption investigations by GIR 40 under 40 and technology by GDR 40 under 40. Based on his experience as State Attorney, he also advises clients in cases related to state-owned companies, administrative sanctioning procedures, concessions, bids and administrative contracts in general. He served as State Attorney of São Paulo before the Federal Supreme Court (STF) and Superior Court of Justice (STJ), and as a clerk at the STJ. He is currently a professor at the University of Brasília (UnB), member of the International Association of Privacy Professionals (IAPP) and the International Committee of Digital Economy of the International Chamber of Commerce (ICC). He is certified by the International Association of Privacy Professionals with CIPP/Europe and author of the book Fundamentals of Privacy Regulation and Personal Data Protection (2019), published by Amazon.



  • Análise Advocacia 500 – Regulatory; Telecommunications (2019); Automotive (2019–2020); Compliance (20192020); Concessions (2020); Digital (2019–2020); Education (2020); Energy (2020); Healthcare Plans (2020); Insurance (2020); Rubber and Plastics (2020); Technology (2020); Trade (2020); Distrito Federal (2020)
  • Chambers Latin America – Technology (2019–2021)
  • CIPP/Europe certification – International Association of Privacy Professionals;
  • Leaders League – Public Law (2020); Data Protection (20182019); Technology (20182019)
  • Latin Lawyer 250 – Anti-corruption investigations and Compliance; Administrative Law; Data, technology and privacy law (2020)
  • The Legal 500 – Public Law (2018–2019); Compliance (2019); TMT (20182021); Energy and Natural Resources: Electricity (2018);
  • Global Data Review – 40 under 40 (2018; 2020)
  • Global Investigations Review – 40 under 40 (2020)
  • Who’s Who Legal Brazil – Administrative litigation (20182020); Data (2018 – 2020)
  • Who’s Who Legal Global – Data privacy and protection (2020)
  • Who’s Who Legal Thought Leaders – Brazil (2020); Investigations (2021)

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