Marriage annulment law varies from state to state, with the main distinctions usually being the grounds under which a court can grant the annulment. The process of pursuing such an action is usually very similar within each state legal system. Usually, both parties must file the appropriate paperwork and submit the evidence that they wish the court to review in order to make their determination about the validity of the request. For instance, if one party is pursuing the annulment after discovering their spouse has an active criminal career, they must be able to demonstrate proof of this in order for the court to be able to legally grant the annulment.