Lex fori

Lex fori (Latin for law or law of the Court ) is a major application of law rules of private international law. The term " lex fori " means the law in force at the place of the court in private international law. It is that law which is applicable to the jurisdiction, ie the law of the forum State. This right shall apply ( see International Civil Procedure Law ), but in addition also for some other questions of private international law, particularly questions of procedural law.

To qualify, the legal question of facts with foreign elements, ie to determine the factors relevant to the facts of law rule applies the prevailing opinion for reasons of practicality throughout the lex fori. For this, the facts of life springing a question of law is associated with the corresponding, used in a conflict rule, the legal concept of a system (so-called attachment object). The determination, interpretation and classification of the attachment object take place according to the ideas of the substantive law of the forum State. In IZPR is to determine the international jurisdiction of the forum court in the forum state is also the lex fori. It therefore applies in international procedural law, the principle that a state court applies only its own ( formal ) procedure law.

The antonym is the lex causae. This is in contrast to the prevailing opinion instead of the lex fori applied by a minority opinion to find the relevant conflict rules by means of interpretation according to the qualification called upon to apply foreign law.

• Private International Law