Oklahoma Summons on Third-Party Complaint (AO-441) is a legal document issued by the court in Oklahoma when a third party is sued for damages in a civil lawsuit. This summons requires the third-party defendant to answer the complaint and appear in court to address the lawsuit. It is also used to notify the third party of their rights in the case. The summons is typically issued after the plaintiff has filed the original complaint. There are three different types of Oklahoma Summons on Third-Party Complaint (AO-441): Summons on Third-Party Complaint (AO-441A), Summons to Answer Third-Party Complaint (AO-441B), and Summons to Non-Resident Third-Party (AO-441C). Each summons is specific to the particular case and serves a different purpose. Summons on Third-Party Complaint (AO-441A) notifies the third-party defendant that they are being sued. Summons to Answer Third-Party Complaint (AO-441B) requires the third-party defendant to answer the complaint. Summons to Non-Resident Third-Party (AO-441C) is used when the third-party defendant is a non-resident of Oklahoma.