Lex fori

[Latin, The law of the forum, or court.] The positive law of the state, nation, or jurisdiction within which a lawsuit is instituted or remedy sought.

The lex fori, or law of the jurisdiction in which relief is pursued, governs all procedural matters as distinguished from substantive rights.

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LEX FORI, practice. The law of the court or forum.
     2. The forms of remedies, the modes of proceeding, and the execution of judgments, are to be regulated solely and exclusively, by the laws of the place where the action is instituted or as the civilians uniformly express it, according to the lex fori. Story, Confl. of Laws, Sec. 550; 1 Caines' Rep. 402; 3 Johns. Ch. R. 190; 5 Johns. R. 132; 2 Mass. R. 84; 7 Mass. R. 515; 3 Conn. R. 472; 7 M. R. 214; 1 Bouv. Inst. n. 860.