The Wisconsin Notice of Lawsuit and Request for Waiver of Service of Summons — AO 398 is a legal document that is used to initiate a lawsuit in the state of Wisconsin. It is sent to the defendant by the plaintiff and serves as an official notice of the lawsuit as well as a request for the defendant to waive their right to be served the summons in person. The Notice of Lawsuit and Request for Waiver of Service of Summons is a two-part form, which includes instructions, a summons, and a request for waiver. There are two types of AO 398 forms; one for civil cases and one for small claims cases. Both forms must be signed by the plaintiff, and the small claims form must also be signed by a witness. Upon receipt of the AO 398, the defendant must either sign and return the waiver or inform the court that they wish to be served the summons in person.