Jurisdiction Ratione Personae Law and Legal Definition

Jurisdiction Ratione Personae refers to a court’s power to bring a person into its adjudicative process. It is the jurisdiction over a defendant's personal rights, rather than merely over property interests. Ratione Personae is a Latin term which means by reason of his person. For example, if a tourist from Nicaragua visited a Canadian courthouse and filed a statement of claim against another Nicaraguan in relation to a tort that allegedly occurred in Nicaragua, the Candian court can decline to hear the case because of a lack of rationae personae.