Lorena Nisiyama (she/her) is a partner in the Antitrust practice of Tauil & Chequer in association with Mayer Brown in Brasília's office.

She advises clients on all areas of competition law, with strong a focus on cartel investigations, abuse of dominance, negotiations of leniency and settlement agreements with the antitrust authority, antitrust litigation regarding CADE decisions and general consulting in the area, particularly in vertical agreements and distribution issues. Lorena is also very experienced in internal antitrust audits and antitrust compliance investigations and trainings.

She is recognized by directories and publications such as GCR, Who's Who Legal, Análise Advocacia 500, Leaders League and Legal 500 as a Rising Star in Antitrust in Brazil. She is also a voluntary professor of Antitrust Law at the Universidade de Brasília Law School.

Spoken Languages

  • English
  • Portuguese


She has represented clients from different industries before the competition and other government authorities, including the pharmaceutical, consumer goods, food, packaging, infrastructure, oil and gas, energy and telecommunications industries. She was recognized by Análise Advocacia 500 for her representation of companies from the Automotive / Autoparts industry.


Columbia University, LLM

King's College London, EU Competition Law

University of Brasília, Bachelor of Laws


  • Brazil


  • Voluntary Professor of Antitrust Law, Universidade de Brasília Law School
  • Lorena Nisiyama is recognized in the category “Competition – Future Leader” – Who's Who Legal 2019
  • Lorena Nisiyama is recognized by the Legal 500 –  2019 as a Rising Star in Antitrust 
  • Lorena Nisiyama is recognized by the Análise Advocacia 500 – 2019 in 4 different categories, among them for her performance in Competition Law and presence in the Brasília market