A prenuptial lawyer is a qualified legal attorney who assists clients in matters related to marriage and prenuptial agreements. A prenuptial lawyer regularly helps couples agree upon and draft prenuptial agreements, and also often consults those wishing to invalidate or challenge an existing prenuptial agreement. Because the laws regarding prenuptial agreements can often differ by state, it is usually a good idea to have a prenuptial lawyer look over an agreement to ensure that all legal requirements have been met. It is important to ensure that a prenuptial agreement is valid under applicable state laws in order to avoid any potential problems in the future. Those who have any questions regarding their rights and responsibilities pertaining to prenuptial agreements should contact a qualified attorney in order to better understand their legal options.