Ex parte

Ex parte is a Latin legal term meaning "from (by or for) one party." An ex parte decision is one decided by a judge without requiring all of the parties to the controversy to be present. In Australian, Canadian, U.K., and U.S. legal doctrines, ex parte means a legal proceeding brought by one person in the absence of and without representation or notification of other parties. It is also used more loosely to refer to improper unilateral contacts with a court, arbitrator or represented party without notice to the other party or counsel for that party.

In the United States, the availability of ex parte orders or decrees from both federal and state courts is sharply limited by the Fifth and Fourteenth Amendments, which provide that a person shall not be deprived of any interest in liberty or property without due process of law. In practice this has been interpreted to require adequate notice of the request for judicial relief and an opportunity to be heard concerning the merits of such relief. A court order issued on the basis of an ex parte proceeding, therefore, will necessarily be temporary and interim in nature, and the person(s) affected by the order must be given an opportunity to contest the appropriateness of the order before it can be made permanent.