Rule 22 - Counterclaims, Cross-claims, and Third-party Claims(A) Counterclaims.(1) Each defendant may set forth as many counterclaims, both legal and equitable, as that defendant may have against a plaintiff.(2) A counterclaim may or may not diminish or defeat the recovery sought by the opposing party. It may claim relief exceeding in amount or different in kind from that sought in the pleading of the opposing party.(B) Cross-claim against codefendant.(1) In any action where two or more parties are joined as defendants, any defendant may in that defendant's answer allege a cross-claim against any other defendant. A cross-claim asserted against a codefendant must be one existing in favor of the defendant asserting the cross-claim and against another defendant, between whom a separate judgment might be had in the action, and shall be one arising out of the occurrence or transaction set forth in the complaint or related to any property that is the subject matter of the action brought by plaintiff.(2) A cross-claim may include a claim that the defendant against whom it is asserted is liable, or may be liable, to the defendant asserting the cross-claim for all or part of the claim asserted by the plaintiff.(3) An answer containing a cross-claim shall be served on the parties who have appeared.(C)Third-party practice.(1) After commencement of the action, a defending party, as a third-party plaintiff, may cause a summons and complaint to be served on a person not a party to the action who is or may be liable to the third-party plaintiff for all or part of the plaintiff's claim against the third-party plaintiff as a matter of right not later than 90 days after service of the plaintiff's summons and complaint on the defending party. Otherwise the third-party plaintiff must obtain agreement of parties who have appeared and leave of court. The person served with the summons and third-party complaint, hereinafter called the third-party defendant, shall assert any defenses to the third-party plaintiff's claim as provided in Rule 21 and may assert counterclaims against the third-party plaintiff and cross-claims against other third-party defendants as provided in this rule. The third-party defendant may assert against the plaintiff any defenses that the third-party plaintiff has to the plaintiff's claim. The third-party defendant may also assert any claim against the plaintiff arising out of the transaction or occurrence that is the subject matter of the plaintiff's claim against the third-party plaintiff. Any party may assert any claim against a third-party defendant arising out of the transaction or occurrence that is the subject matter of the plaintiff's claim against the third-party plaintiff, and the third-party defendant thereupon shall assert the third-party defendant's defenses as provided in Rule 21 and may assert the third-party defendant's counterclaims and cross-claims as provided in this rule. Any party may move to strike the third-party claim, or for its severance or separate trial. A third-party defendant may proceed under this section against any person not a party to the action who is or may be liable to the third-party defendant for all or part of the claim made in the action against the third-party defendant.(2) A plaintiff against whom a counterclaim has been asserted may cause a third-party defendant to be brought in under circumstances that would entitle a defendant to do so under subsection C(1) of this section.(D) Joinder of additional parties.(1) Persons other than those made parties to the original action may be made parties to a counterclaim or cross-claim in accordance with the provisions of Rule 28 and Rule 29.(2) A defendant may, in an action on a contract brought by an assignee of rights under that contract, join as parties to that action all or any persons liable for attorney fees under ORS 20.097. As used in this subsection "contract" includes any instrument or document evidencing a debt.(3) In any action against a party joined under this section of this rule, the party joined shall be treated as a defendant for purposes of service of summons and time to answer under Rule 7.(E) Separate trial. On the motion of any party or on the court's own initiative, the court may order a separate trial of any counterclaim, cross-claim, or third-party claim so alleged if to do so would be more convenient, avoid prejudice, or be more economical and expedite the matter.CCP 12/2/1978; §D amended by 1979 c.284 § 17; §A amended by CCP 12/13/1980; §C amended by CCP 12/4/1982; §C amended by CCP 12/10/1994; last amended December 3, 2016, effective 1/1/2018.