Maria Cibele Crepaldi Affonso dos Santos


Recognized by Chambers Latin America as one of the best Brazilian corporate lawyer; by The Legal 500 Latin America and by LACCA Approved as one of the best Brazilian corporate and M&A lawyers.

Member of the Brazilian Bar Association – Sections of São Paulo and Rio de Janeiro and of the American Bar Association – Sections of International Law, Antitrust and Business.

  • MBA in Business Administration, majoring in management, from the Getúlio Vargas Foundation – FGV/SP (2009)
  • Specialization in Economic and Trade Relations Law at the Getúlio Vargas Foundation – FGV/SP (2003)
  • Specialization in Commercial Law at the Pontifical Catholic University of São Paulo – PUC/SP (2001)
  • Specialization in Tax Law at the Center of University Extension Studies (1987)
  • Specialization in Private International Law at the International Law Academy in The Hague, Netherlands (1986)
  • Graduated from the Pontifical Catholic University of São Paulo – PUC/SP (1984)
Awards and achievements
  • Recognized by Chambers Latin America as one of the best Brazilian corporate lawyer
  • Recognized by The Legal 500 Latin America as one of the best Brazilian corporate and M&A lawyers
  • Recognized by LACCA Approved as one of the best Brazilian corporate and M&A lawyers


Role of Technology in 2018 and the First Brazilian “Unicorn”

A report published by KPMG indicated that internet and information technology were the leading economic sectors of M&A transactions by volume in 2017, representing approximately 23% of all the M&A transactions in Brazil. Internet companies were targets in 104 transactions, while entities belonging to the IT industry were parties to 88 deals in 2017. Those sectors surpassed traditional industries in Brazil such as food, beverage and oil & gas.

Family law: arbitration can have an important role in succession and family matters

Brazilian laws – specifically article 852 of the Civil Code – do not accept the arbitration clause as means to solve conflicts when personal matters of family law which are not exclusively related to wealth are involved. However, this limitation itself can no longer completely exclude arbitration, which continues to expand in all areas of […]

Choices that make the difference

The success in arbitration and the better enjoyment of the advantages arbitration may offer are directly related to the strategies and procedural choices made by the parties of an agreement and/or litigation. The first step essential to succeed in an arbitration procedure is certainly the negotiation of the arbitration clause (for further details, please refer […]

Corporate conflicts

Arbitration is able to solve the various situations relating to the particularities involved in the corporate conflicts in a quicker, more discrete and efficient manner than the Judiciary – considering the probable expertise of the arbitrations in the matters discussed. This is why the amount of corporate incorporation documents and derived agreements that provide arbitration […]

Guarantee of confidentiality

When choosing alternative means to settle conflicts and thus avoiding the Judiciary, the companies may still discuss corporate secrets with the necessary confidentiality and, at the same time, preserve their image from unfavorable effects usually seen in litigation. However, it is important to emphasize that even though confidentiality is considered a natural consequence of arbitration, […]

The advantages of choosing the proper arbitration chamber

The arbitration procedure is highly flexible and allows the parties to chose many procedural rules and determine specific deadline to each case. For this reason, the good development of the arbitral procedure depends on the choice of the applicable regulation, among other factors. By opting for an institutional arbitration, the parties decide to count on […]

One company, one master

By protecting a company, as required by law, an officer will end up harming the other company.