Rule 502.6 - Counterclaim; Cross-claim; Third Party Claim(a)Counterclaim. A defendant may file a petition stating as a counterclaim any claim against a plaintiff that is within the jurisdiction of the justice court, whether or not related to the claims in the plaintiff's petition. The defendant must file a counterclaim petition as provided in Rule 502.2, and must pay a filing fee or provide a Statement of Inability to Afford Payment of Court Costs. The court need not generate a citation for a counterclaim and no answer to the counterclaim need be filed. The defendant must serve a copy of the counterclaim as provided by Rule 501.4.(b)Cross-Claim. A plaintiff seeking relief against another plaintiff, or a defendant seeking relief against another defendant may file a cross-claim. The filing party must file a cross-claim petition as provided in Rule 502.2, and must pay a filing fee or provide a Statement of Inability to Afford Payment of Court Costs. A citation must be issued and served as provided by Rule 501.2 on any party that has not yet filed a petition or an answer, as appropriate. If the party filed against has filed a petition or an answer, the filing party must serve the cross-claim as provided by Rule 501.4.(c)Third Party Claim. A defendant seeking to bring another party into a lawsuit who may be liable for all or part of the plaintiff's claim against the defendant may file a petition as provided in Rule 502.2, and must pay a filing fee or provide a Statement of Inability to Afford Payment of Court Costs. A citation must be issued and served as provided by Rule 501.2.Amended effective 9/1/2016.