The Tennessee Third Party Summons — Civil Action Memo to File (AO-441) is a form used in the state of Tennessee to initiate a civil action on behalf of a third party. This form is used to serve a summons on an individual or entity who is not a party to the action but is relevant to the dispute. This form is issued by the Clerk of Court and contains information about the legal action and the parties involved. There are two types of Tennessee Third Party Summons — Civil Action Memo to File (AO-441): the Summons to File a Counterclaim or Cross-Claim and the Summons to Answer to a Third-Party Complaint. Both forms require the recipient to file a response with the court within 30 days of service. The Summons to File a Counterclaim or Cross-Claim requires the recipient to file a pleading with the court within 30 days of service, while the Summons to Answer to a Third-Party Complaint requires the recipient to answer the complaint and serve a copy on the plaintiff within 30 days of service.