Inter-American Court of Human Rights

The adjudicatory function requires the Court to rule on cases brought before it in which a state party to the Convention, and thus has accepted its jurisdiction, is accused of a human rights violation.

In addition to ratifying the Convention, a state party must voluntarily submit to the Court's jurisdiction for it to be competent to hear a case involving that state. Acceptance of contentious jurisdiction can be given on a blanket basis – to date, Argentina, Barbados, Bolivia, Brazil, Chile, Colombia, Costa Rica, the Dominican Republic, Ecuador, El Salvador, Guatemala, Haiti, Honduras, Mexico, Nicaragua, Panama, Paraguay, Peru, Suriname, Trinidad and Tobago, Venezuela and Uruguay have done so[4] (though Trinidad and Tobago and Venezuela have subsequently withdrawn) – or, alternatively, a state can agree to abide by the Court's jurisdiction in a specific, individual case.

Under the Convention, cases can be referred to the Court by either the Inter-American Commission on Human Rights or a state party. In contrast to the European human rights system, individual citizens of the OAS member states are not allowed to take cases directly to the Court.

The following conditions must be met:

• Individuals who believe that their rights have been violated must first lodge a complaint with the Commission and have that body rule on the admissibility of the claim.
• If the case is ruled admissible and the state deemed at fault, the Commission will generally serve the state with a list of recommendations to make amends for the violation.
• Only if the state fails to abide by these recommendations, or if the Commission decides that the case is of particular importance or legal interest, will the case be referred to the Court.
• The presentation of a case before the Court can therefore be considered a measure of last resort, taken only after the Commission has failed to resolve the matter in a non-contentious fashion.

Proceedings before the Court are divided into written and oral phases.

In the written phase, the case application is filed, indicating the facts of the case, the plaintiffs, the evidence and witnesses the applicant plans to present at trial, and the claims for redress and costs. If the application is ruled admissible by the Court's secretary, notice thereof is served on the judges, the state or the Commission (depending on who lodged the application), the victims or their next-of-kin, the other member states, and OAS headquarters.

For 30 days following notification, any of the parties in the case may submit a brief containing preliminary objections to the application. If it deems necessary, the Court can convene a hearing to deal with the preliminary objections. Otherwise, in the interests of procedural economy, it can deal with the parties' preliminary objections and the merits of the case at the same hearing.

Within 60 days following notification, the respondent must supply a written answer to the application, stating whether it accepts or disputes the facts and claims it contains.

Once this answer has been submitted, any of the parties in the case may request the Court president's permission to lodge additional pleadings prior to the commencement of the oral phase.

The president sets the date for the start of oral proceedings, for which the Court is considered quorate with the presence of five judges.

During the oral phase, the judges may ask any question they see fit of any of the persons appearing before them. Witnesses, expert witnesses, and other persons admitted to the proceedings may, at the president's discretion, be questioned by the representatives of the Commission or the state, or by the victims, their next-of-kin, or their agents, as applicable. The president is permitted to rule on the relevance of questions asked and to excuse the person asked the question from replying, unless overruled by the Court.

After hearing the witnesses and experts and analyzing the evidence presented, the Court issues its judgment. Its deliberations are conducted in private and, once the judgment has been adopted, it is notified to all the parties involved. If the merits judgment does not cover the applicable reparations for the case, they must be determined at a separate hearing or through some other procedure as decided on by the Court.

The reparations the Court orders can be both monetary and non-monetary in nature. The most direct form of redress are cash compensation payments extended to the victims or their next-of-kin. However, the state can also be required to grant benefits in kind, to offer public recognition of its responsibility, to take steps to prevent similar violations occurring in the future, and other forms of non-monetary compensation.

For example, in its November 2001 judgment[5] in the Barrios Altos case – dealing with the massacre in Lima, Peru, of 15 people at the hands of the state-sponsored Colina Group death squad in November 1991 – the Court ordered payments of US$175,000 for the four survivors and for the next-of-kin of the murdered victims and a payment of $250,000 for the family of one of the victims. It also required Peru:

• to grant the victims' families free health care and various forms of educational support, including scholarships and supplies of school uniforms, equipment, and books;
• to repeal two controversial amnesty laws;
• to establish the crime of extrajudicial killing in its domestic law;
• to ratify the International Convention on the Nonapplicability of Statutory Limitations to War Crimes and Crimes against Humanity;
• to publish the Court's judgment in the national media;
• to publicly apologize for the incident and to undertake to prevent similar events from recurring in the future;
• and to erect a memorial monument to the victims of the massacre.

While the Court's decisions admit no appeal, parties can lodge requests for interpretation with the Court secretary within 90 days of judgment being issued. When possible, requests for interpretation are heard by the same panel of judges that ruled on the merits.

The Court's advisory function enables it to respond to consultations submitted by OAS agencies and member states regarding the interpretation of the Convention or other instruments governing human rights in the Americas; it also empowers it to give advice on domestic laws and proposed legislation, and to clarify whether or not they are compatible with the Convention's provisions. This advisory jurisdiction is available to all OAS member states, not only those that have ratified the Convention and accepted the Court's adjudicatory function. The Court's replies to these consultations are published separately from its contentious judgments, as advisory opinions.