An Illinois appellate panel has reversed and remanded a woman's petition to annul her marriage on the basis of fraud. While the case does not make new law, it is an interesting example of the subtleties of the state's marriage laws.
When a married couple wants to split up, they have two options: divorce or declaration of invalidity. (Since 1977, the state has used the term "declaration of invalidity of a marriage" in place of "annulment." So, legal documents generally use the former, but in common discourse the terms are interchangeable.) The difference is important. When the couple divorces, the marriage is terminated. With a declaration of invalidity, the marriage never took place.