To win an annulment in Maryland, the couple or individual must be able to claim valid and legal grounds for such an action. The state recognizes a limited number of reasons that a marriage can be considered void, including impotency, mental disability, duress or force, bigamy and incest or consanguinity. Like all other states, annulment in Maryland requires that documentary evidence of the claims be submitted to the court once a petition has been accepted. This evidence is then reviewed and the judge makes a final ruling. The most important factor around any of the grounds is that they must have been existing at the time of the marriage ﾖ for example, if a spouse displays signs of mental disability after a few years of marriage, this cannot serve as grounds for annulment.