theory of the case
theory of the case. A comprehensive and orderly mental arrangement of principles and facts, conceived and constructed for the purpose of securing a judgment or decree of a court in favor of a litigant; the particular line of reasoning of either party to a suit, the purpose being to bring together certain facts of the case in a logical sequence and to correlate them in a way that produces in the decision-maker’s mind a definite result or conclusion favored by the advocate. See CAUSE OF ACTION(1).