Gisela Ferreira Mation > Machado Meyer Sendacz e Opice Advogados > Rio de Janeiro, Brazil > Lawyer Profile

Machado Meyer Sendacz e Opice Advogados
RIO DE JANEIRO, RJ, 22290-160

Work Department

Litigation, Arbitration and Dispute Resolution




Gisela is a specialist in the prevention and resolution of disputes before arbitral tribunals and state courts. She has extensive experience in cross-border disputes and has acted before the main Brazilian and international arbitral institutions. She represents clients in complex conflicts related to contract, corporate and civil liability law. Her practice also encompasses insolvency proceedings and debt restructuring. Her clients include Brazilian and foreign companies from several industry sectors, including oil and gas, energy and construction.


  • Brazilian Bar Association
  • New York Bar Association
  • Comitê Brasileiro de Arbitragem (CBAR)
  • Young International Arbitration Group (YIAG)
  • ICDR Young & International
  • American Society of International Law
  • International Bar Association


  • Direito Privado e Combate à Corrupção: Desconsideração da Personalidade Jurídica e Falência no caso TRT. In: Maíra Machado et al. (Org.), Estudos sobre o Caso TRT, São Paulo: Direito GV, 2014
  • Arbitrabilidade de disputas envolvendo empresa falida ou em recuperação judicial: notas sobre a jurisprudência brasileira. In: Gilberto Gomes Bruschi et al. (Org.), Direito Processual Empresarial, Elsevier: 2012
  • Uma Conversa sobre Direito Societário Comparado com o professor Klaus Hopt, 28 Cadernos Direito GV 7-27, 2009 (coauthor)
  • As Ações Civis para Cessação e Reparação de Danos Causados por Condutas Anticoncorrenciais no Brasil. In: Prêmio SEAE 2008, Treasury Department 2009

Lawyer Rankings

Brazil > Dispute Resolution: Arbitration

(Next Generation Partners)

Gisela Ferreira MationMachado Meyer Sendacz e Opice Advogados

Fielding a sizeable team of practitioners dedicated to arbitration, Machado Meyer Sendacz e Opice Advogados is rated by clients for its ‘deep knowledge of the legislation relevant to arbitration procedures‘. Institutional and ad hoc proceedings before various national and international arbitral bodies, including the ICC and CAM-CCBC, feature heavily in the team’s busy caseload. Corporate, commercial and post-M&A disputes are key areas of focus for the department, which has recently witnessed an uptick in demand from clients operating in the construction, energy, oil and gas, and financial services sectors. Eliane Cristina Carvalho is recognised as ‘one of the best arbitration professionals in the market‘; she has represented major companies in several national and international arbitration proceedings. Gisela Ferreira Mation focuses on the resolution of disputes through arbitration, and is singled out for her experience in cross-border matters involving Brazil and the US. Multi-jurisdictional proceedings are also a field of particular activity for associate Leandro Felix, who has gained legal international experience in the US.

Brazil > Compliance

The combined compliance and white-collar crime practice at Machado Meyer Sendacz e Opice Advogados is highlighted for its ‘experience, credibility, engagement and organisation‘. Its vast experience in corporate investigations sees it representing clients in sensitive investigations into allegations of fraud, unfair competition, cartels and environmental law breaches, among other matters. The full-service firm has a loyal client base, including in the banking and financial services sector, and the compliance practice’s strength sees it continuing to attract instructions from new clients across the technology, real estate, chemicals and mining industries. Juliana Sá de Miranda brought her white-collar and compliance practice to the firm in 2019, combining her expertise with that of anti-corruption, antitrust and crisis management partner Marcos Paulo Veríssimo, who also benefits from his previous experience at the Brazilian Development Bank (BNDES) and competition regulator (CADE). Gisela Ferreira Mation and associate Gabriela Silveira Viana are also key contacts.

Brazil > Dispute Resolution: Litigation

The ‘highly specialised team’ at Machado Meyer Sendacz e Opice Advogados has the capacity to act for a range of Brazilian and international clients across sectors such as telecoms, energy, infrastructure, banking and retail. The practice is sought after for its expertise in handling high-stakes cases before all courts in the country, including the superior courts in Brasília. Its recent workload showcases the group’s strength in representing corporations from the energy, technology, pharmaceuticals and automotive sectors in high-value domestic and cross-border litigation proceedings. The dispute resolution team is deeply involved in the firm’s pro bono practice, having handled more than 140 cases in 2021. Specialised in the prevention and resolution of civil disputes, Eliane Cristina Carvalho is seasoned in litigation and arbitration proceedings. She oversees the department with Gláucia Mara Coelho, who represents clients before judicial and administrative courts. Eduardo Perazza De Medeiros, who is an expert in technology and digital law, has worked in an array of contentious matters, ranging from corporate disputes to public civil actions and tort liability. These are also core areas of activity for Paulo Eduardo Leite Marino. Gisela Ferreira Mation excels in cross-border mandates; Thais Cordeiro, who focuses on consumer issues, joined the firm from Siqueira Castro – Advogados.