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About us

After more than ten years of criminal practice in Brazil's most traditional and renowned legal firms, as well as of academic research in Criminal Law and Criminal Procedure Law, Leonardo Sica from University of Sao Paulo Law School founded Sica Advocacia..

Sica Advocacia was built upon two fundamental goals: to adapt criminal practice to complex demands of contemporary society and to apply knowledge and experience to help our cases, making an effective combination between academy and real life.

The law firm practice was designed to respond to several changes in effect since the end of the last century, leading to both a quantitative and qualitative increase of criminal justice.

More facts are criminalized and the criminal procedure structure has changed, resulting in new forms of intervention (Moccia, La perene emergenza). To traditional advocacy values and principles (such as discretion and accountability), it is now crucial to add innovation, efficiency, language and technology. This is the only way to define proper methods and paradigms of practice to fully represent clients’ rights and interests.

From the legal arguments to case management, the law firm applies modern tools such as complete file digitalization, data sharing in cloud computing, performance targets, statistical analysis of case law, as well as strategic partnerships for litigation with other firms and renowned scholars and specialists for legal opinions, whenever needed.

Practice Areas

Although Sica Advocacia acts in criminal cases of every nature, it is possible to divide its practice into three broad branches:


A law practice area increasingly important (especially in Brazil), which includes financial crimes, tax crimes, crimes against the consumer, environmental crimes and in bidding procedures, unfair competition and antitrust, among others.

We hereby defend the companies and its representatives in criminal suits, police inquiries, police operations, investigations and accusation of frauds. We also provide legal counseling services, such as scenario analyses, risk management and due diligence procedures, especially for transnational companies.


The increased importance given by many to the corporate criminal area does not allow us to forget that the mechanisms of public repression are harsher on individuals. Even in police inquiries and criminal prosecution that involve companies, the outcomes are more severely felt by its representatives. Thus, we do not neglect the essential element of criminal law: to defend human rights dignity. Drug crimes, interpersonal conflicts, property crimes and jury trials compose the range of our activities and are very important to Sica Advocacia.


Believing that legal profession has the duty, means and opportunity to promote a fair and equitable justice system and respect for human and constitutional rights, we find it our responsibility to provide pro bono legal services to less privileged people, especially in Brazil, where government resources for legal services organizations are insufficient to satisfy the critical legal needs of many.

Restrained to our availability, we divide our practice between non assisted people, victims of notable injustices as well as paradigmatic cases, those in which legal thesis can help case law echo in other citizens’ rights.

In all practice fields, it is important to highlight the following:

- our team is composed by professionals with proficiency in English and other languages, being able to fully attend need of foreign clients; and
- has relevant knowledge and experience in legal aspects related to the internet, either related to electronic or digital crimes, or to legal issues about privacy, confidentiality and data protection.

*Constituição Federal, art. 133. O advogado é indispensável à administração da justiça, sendo inviolável por seus atos e manifestações no exercício da profissão, nos limites da lei.

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