transient jurisdiction

In law, jurisdiction refers to a court's authority to hear and decide cases. This authority is constitutionally based and can be categorized in various ways, such as appellate, concurrent, or federal jurisdiction. A court may also have territorial limits on its power.

"Transient jurisdiction" is a concept primarily found in common-law countries, particularly the United States. It allows a U.S. court to exercise jurisdiction over a defendant if they are physically present within the state's territory and served with legal documents, even if their presence is temporary or they are merely in transit. This contrasts with civil-law systems, which typically base jurisdiction on the defendant's domicile or a more substantial connection to the place of the lawsuit. While seemingly technical, jurisdictional matters can be crucial to the outcome of a legal case.12