There are two ways a couple can legally terminate their marriage: divorce and annulment. Annulment differs significantly from divorce in that it not only ends the marriage, but declares it invalid. After a marriage has been annulled, in the eyes of the law, it’s as if the marriage never occurred. Illinois law refers to an annulment of marriage as a “judgment of invalidity.” Judgments of invalidity are granted only under very specific circumstances in Illinois. Not just any marriage is eligible for invalidation under this law.