“Prescription does not run against any one … unless he is able to act in defence of his right cum effectu…. Under the old feudal system the casualty of ward was not incurred except where the vassal alienated his lands cum effectu. Thus, if the vassal was interdicted and disponed without the consent of his interdictors, his conveyance being reducible was not effectual, and the casualty was not incurred.” John Trayner, Trayner’s Latin Maxims 127–28 (4th ed. 1894).
cum effectu
cum effectu (k[schwa]m i-fek-t[y]oo). [Latin] Hist. With effect; in effect.
