The Oklahoma Notice of Suit and Request to Waive Service of Summons (AO-398) is a legal document used to notify a defendant of a pending lawsuit in the state of Oklahoma. It is typically sent by the plaintiff or their legal representative to the defendant, detailing the nature of the lawsuit, the court in which it is filed, and the amount of damages sought. The Notice also includes a Request to Waive Service of Summons, which allows the defendant to waive the right to be personally served with the summons and complaint. The Notice of Suit and Request to Waive Service of Summons is available in three different types of forms, depending on the type of case being filed: 1. Civil Cases (AO-398A) 2. Domestic Cases (AO-398B) 3. Small Claims Cases (AO-398C) The Notice of Suit and Request to Waive Service of Summons must be properly completed, signed, and notarized by the plaintiff or their legal representative before being sent to the defendant. Service of the Notice is typically accomplished by certified mail or by a professional process server. If the defendant does not respond to the Notice by waiving service of summons, they must be personally served in accordance with Oklahoma law.