Karen advises clients on a full range of antitrust/competition issues, in both contentious and non-contentious matters. She has a particularly successful track record representing clients in cartel investigations and merger control cases, both in complex and simple matters. Karen’s experience spans from strategic assessment and crafting claims and defenses to settlement evaluation and negotiation of agreements with antitrust authorities. The clients taken care of by her include several of the largest companies in diverse industries, ranging from auto parts, beverage packaging, chemicals, electronics, maritime freight transportation, to nutrition products. Author of articles related to economic and competition law. Speaker at national and international events.

Karen holds a Ph.D. in Commercial Law (focus on Antitrust/Competition Law) from the University of São Paulo – USP; was a Visiting Researcher at Max Planck Institute for Comparative and International Private Law, Hamburg, Germany; holds a Master of Economic Law from the Federal University of Minas Gerais – UFMG; holds a Bachelor of Law Degree from Milton Campos Law School.

  • Paper “(Ir)retroatividade e alterações na política de conteúdo local”, em co-authorship with Daniel Athias and Bernardo Leite, in: Revista de Direito Público da Economia – RDPE, ano 19, n. 73, jan./ mar. 2021.
  • Paper “Da definição de efeitos para fins de aplicação da Lei Concorrencial brasileira a cartéis internacionais”, in “Direito Concorrencial em transformação: uma homenagem a Mauro Grinberg”. São Paulo: Singular, 2020.
  • Co-author of a chapter in “Private Antitrust Litigation Brazil”, 2nd Edition, Practical Law Global Guides/Thomson Reuters, 2019.
  • “Da comprovação de culpa para responsabilização de administrador por infração à ordem econômica”, Revista do IBRAC, vol. 24, 2013.
  • “Identificação de infração à ordem econômica e do recurso de ofício ao Cade – Jurisprudência comentada”, Revista do IBRAC, vol. 20, 2011.
  • “Acordo para troca de informações: o caso UK Agricultural Tractor Registration Exchange”, in “O Cartel”, coordinated by João Bosco Leopoldino da Fonseca, Mandamentos, Belo Horizonte, 2007.
  • “Discriminação de preços”, in “Temas de Direito da Concorrência”, coordinated by João Bosco Leopoldino da Fonseca, Belo Horizonte, 2005.

  • President of the Antitrust Commission and National Representative for Brazil at AIJA – International Association of Young Lawyers (2023-2025).
  • Vice-President of the Antitrust Commission and National Representative for Brazil at AIJA – International Association of Young Lawyers (2020-2023).
  • Member of Antitrust Litigation Working Group within the IBA Antitrust Section.
  • Visiting Professor at Getúlio Vargas Foundation – FGV (GVLaw)’s postgraduate courses in Economic Law and Antitrust Law.
  • Scholarship from CAPES – Coordenação de Aperfeiçoamento de Pessoal de Nível Superior, in connection with the Master’s Degree from the Federal University of Minas Gerais – UFMG.
  • Participant in the internship program organized by the Administrative Council for Economic Defense – CADE in 2003.
  • Researcher and member of the Brazilian Foundation of Economic Law – FBDE in 2001-2004.
  • Recommended by “The Legal 500”, Competition/Antitrust – Brazil in 2018, as a “truly exceptional lawyer”, and named a Next Generation Antitrust Partner in its last editions.
  • Acknowledged as Thomson Stellar Performance – Independently Rated Lawyer in several editions. The acknowledgment is based on a survey originally developed by Acritas (Sharplegal), involving circa 4,000 senior in-house counsel worldwide.
  • Recommended by “Análise Advocacia 500” as one of the most admired lawyers in Brazil in Competition Law since 2018.

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