FRUSTRA PROBATUR QUOD PROBATUM NON RELEVAT by Law Professor Latin, meaning That is proved in vain which when proved is not relevant. Related Posts:PROBATUM ESTLEX NIL FRUSTRA FACITLEX NON REQUIRIT VERIFICARI QUOD APPARET CURIAEQUOD PARTITIO FIATNON PONENDIS IN ASSISIS ET JURATISQUOD VANUM ET INUTILE EST LEX NON REQUIRIT