Evidence in Brazilian Law

Introduction

Evidence law in Brazil (Direito Probatório) governs the production, admission, and evaluation of evidence in judicial proceedings. The primary framework is established in the Civil Procedure Code of 2015 (CPC/2015, Law 13.105/2015), which modernized evidence rules by introducing dynamic burden of proof, enhanced judicial management of evidence, and detailed provisions on expert and documentary evidence. The Criminal Procedure Code (CPP) governs evidence in criminal proceedings, with distinct rules reflecting the higher standard of proof and the presumption of innocence.

General Principles

Burden of Proof

The CPC/2015 maintains the general rule (Article 373) that the plaintiff bears the burden of proving the constitutive facts of their right, while the defendant bears the burden of proving the existence of a fact that prevents, modifies, or extinguishes the plaintiff’s right.

Dynamic Burden of Proof

A significant innovation of the CPC/2015 is the dynamic burden of proof (distribuição dinâmica do ônus da prova, Article 373, §1). The court may shift the burden of proof when it is impossible or excessively onerous for one party to produce evidence and the other party has greater capacity to do so. This redistribution requires a prior hearing and respects the adversarial principle.

Standard of Proof

Brazilian law does not adopt a single standard of proof. The CPC/2015 requires the judge to evaluate evidence according to the free conviction (livre convencimento motivado) principle (Article 371), meaning the judge must form a reasoned conviction based on the evidence in the record. In criminal law, the standard is beyond reasonable doubt (além da dúvida razoável) for conviction, though the CPC does not expressly adopt the formula.

Types of Evidence

Documentary Evidence

Documentary evidence (prova documental) is governed by Articles 405-441 of the CPC/2015. Documents may be public (públicos) — issued by a public official — or private (particulares). Public documents enjoy a presumption of authenticity and veracity (fé pública). Private documents, if signed by the party, are presumptively authentic as to their origin.

The CPC/2015 introduced rules for electronic documents (documentos eletrônicos), requiring electronic signatures using certified digital certificates under the Brazilian Public Key Infrastructure (ICP-Brasil) for full evidentiary validity.

Testimonial Evidence

Witness testimony (prova testemunhal) is governed by Articles 442-463. Any person capable of perceiving and communicating facts may testify, except those expressly prohibited (e.g., parties, legal representatives of parties on matters they represent). Witnesses must testify personally and are subject to cross-examination. The judge may limit the number of witnesses (maximum 10 per party for each relevant fact).

Expert Evidence

Expert evidence (prova pericial) is central to Brazilian civil procedure, particularly in complex cases. The CPC/2015 (Articles 464-480) provides for:

• Court-appointed experts (peritos): Appointed by the judge, subject to no impediment or suspicion
• Party experts (assistentes técnicos): Hired by the parties to review and comment on the court expert’s report
• Expert report (laudo pericial): Must be detailed, reasoned, and submitted within the designated time

The court expert must be a professional with technical or scientific qualifications. Parties may submit questions (quesitos) for the expert to answer.

Judicial Inspection

The judge may conduct a judicial inspection (inspeção judicial, Article 481) to directly observe facts or things relevant to the dispute, particularly in real estate, boundary, and nuisance cases.

Presumptions and Indications

Brazilian law recognizes legal presumptions (presunções legais), which may be absolute (juris et de iure) or relative (juris tantum). Judicial presumptions (presunções judiciais or indícios) are inferences drawn by the judge from proven facts, governed by the principle of free conviction.

Evidence in Criminal Procedure

Search and Seizure

The CPP regulates search and seizure (busca e apreensão), requiring judicial warrant for entry into a private residence except in cases of flagrante delicto or disaster.

Interception of Communications

Law 9.296/1996 governs telephone and electronic communications interception (interceptação telefônica e telemática). Interception requires judicial authorization, is limited to criminal investigations, and must be necessary and proportional. The STF has held that evidence obtained from illegal interceptions is inadmissible (prova ilícita).

Illegally Obtained Evidence

Article 5, LVI of the Constitution provides that evidence obtained by illegal means is inadmissible in proceedings. The STF has developed the doctrine of fruits of the poisonous tree (adapted from US law), extending inadmissibility to derivative evidence. However, the STF recognizes exceptions including the independent source doctrine and the inevitable discovery doctrine.

Judicial Evaluation of Evidence

The judge must evaluate evidence as a whole and provide a reasoned explanation of the evaluation (Article 371, CPC/2015). The CPC/2015 eliminated the hierarchy of evidence that existed under the 1973 Code, where certain evidence (e.g., documentary) was preferred over others. The judge may not base a decision exclusively on the procedural position of a party or on evidence not subject to adversarial scrutiny.

Conclusion

Brazilian evidence law has evolved significantly, particularly with the CPC/2015, which introduced dynamic burden of proof and modernized evidentiary procedures while maintaining the civil law tradition of free judicial evaluation. The increasing role of electronic evidence and the continuing development of forensic standards present ongoing challenges, with courts and legislators working to adapt evidentiary rules to technological change.