Ratione Personae Law and Legal Definition

Ratione personae is a latin term. It literally means by reason of his person or by reason of the person concerned. In some international cases, a court’s jurisdiction depends upon whether a defendant is residing within the territory of the court or whether a defendant is a citizen of the state to which the court belongs. In such cases, jurisdiction of a court is decided by reason of the defendant or ratione personae. In international law, ratione personae expresses the rule of law that only a state that is a party to an international treaty can take part in international dispute resolution process.