(c) Motion for Judgment on the Pleadings. After the pleadings are closed一but early enough not to delay trial一a party may move for judgment on the pleadings.
(d) Result of Presenting Matters Outside the Pleadings. If, on a motion under Rule 12(b)(6) or 12(c), matters outside the pleadings are presented to and not excluded by the court, the motion must be treated as one for summary judgment under Rule 56. All parties must be given a reasonable opportunity to present all the material that is pertinent to the motion.
(e) Motion for a More Definite Statement. A party may move for a more definite statement of a pleading to which a responsive pleading is allowed but which is so vague or ambiguous that the party cannot reasonably prepare a response. The motion must be made before filing a responsive pleading and must point out the defects complained of and the details desired. if the court orders a more definite statement and the order is not obeyed within 14 days after notice of the order or within the time the court sets, the court may strike the pleading or issue any other appropriate order.

(f) Motion to Strike. The court may strike from a pleading an insufficient defense or any redundant, immaterial, impertinent, or scandalous matter. The court may act:
(1) on its own; or
(2) on motion made by a party either before responding to the pleading or, if a response is not allowed, within 21 days after being served with the pleading.
(g) Joining Motions.
(1) Right to Join. A motion under this rule may be joined with any other motion allowed by this rule.
(2) Limitation on Further Motions. Except as provided in Rule 12(h)(2) or (3), a party that makes a motion under this rule must not make another motion under this rule raising a defense or objection that was available to the party but omitted from its earlier motion.

(h) Waiving and Preserving Certain Defenses.
(1) When Some Are Waived. A party waives any defense listed in Rule 12(b)(2)-(5) by:
(A) omitting it from a motion in the circumstances described in Rule 12(g)(2); or
(B) failing to either:
(i) make it by motion under this rule; or
(ii) include it in a responsive pleading or in an amendment allowed by Rule 15(a)(1) as a matter of course.
(2) When to Raise Others. Failure to state a claim upon which relief can be granted, to join a person required by Rule 19(b), or to state a legal defense to a claim may be raised:
(A) in any pleading allowed or ordered under Rule 7(a);
(B) by a motion under Rule 12(c); or
(c) at trial.
(3) Lack of Subject-Matter Jurisdiction. If the court determines at any time that it lacks subject-matter jurisdiction, the court must dismiss the action.
(i) Hearing Before Trial. If a party so moves, any defense listed in Rule 12(b)(1)-(7)一whether made in a pleading or by motion一 and a motion under Rule 12(c) must be heard and decided before trial unless the court orders a deferral until trial.
(As amended Dec. 27, 1946, eff. Mar. 19, 1948; Jan. 21, 1963, eff. July 1, 1963; Feb. 28, 1966, eff. July 1, 1966; Mar. 2, 1987, eff. Aug. 1, 1987; Apr. 22, 1993, eff. Dec. 1, 1993; Apr. 17, 2000, eff. Dec. 1, 2000; Apr. 30, 2007, eff. Dec. 1, 2007; Mar. 26, 2009, eff. Dec. 1, 2009.)

Rule 13. Counterclaim and Crossclaim
(a) Compulsory Counterclaim.
(1) In General. A pleading must state as a counterclaim any claim that一at the time of its service一the pleader has against an opposing party if the claim:
(A) arises out of the transaction or occurrence that is the subject matter of the opposing party's claim; and
(B) does not require adding another party over whom the court cannot acquire jurisdiction.
(2) Exceptions. The pleader need not state the claim if:
(A) when the action was commenced, the claim was the subject of another pending action; or
(B) the opposing party sued on its claim by attachment or other process that did not establish personal jurisdiction over the pleader on that claim, and the pleader does not assert any counterclaim under this rule.

(b) Permissive Counterclaim. A pleading may state as a counterclaim against an opposing party any claim that is not compulsory.
(c) Relief Sought in a Counterclaim. A counterclaim need not diminish or defeat the recovery sought by the opposing party. It may request relief that exceeds in amount or differs in kind from the relief sought by the opposing party.
(d) Counterclaim Against the United States. These rules do not expand the right to assert a counterclaim一or to claim a credit一against the United States or a United States officer or agency.
(e) Counterclaim Maturing or Acquired After Pleading. The court may permit a party to file a supplemental pleading asserting a counterclaim that matured or was acquired by the party after serving an earlier pleading.
(f) [Abrogated.]

(g) Crossclaim Against a Coparty. A pleading may state as a crossclaim any claim by one party against a coparty if the claim arises out of the transaction or occurrence that is the subject matter of the original action or of a counterclaim, or if the claim relates to any property that is the subject matter of the original action. The crossclaim may include a claim that the coparty is or may be liable to the crossclaimant for all or part of a claim asserted in the action against the crossclaimant.
(h) Joining Additional Parties. Rules 19 and 20 govern the addition of a person as a party to a counterclaim or crossclaim.
(i) Separate Trials; Separate Judgments. If the court orders separate trials under Rule 42(b), it may enter judgment on a counterclaim or crossclaim under Rule 54(b) when it has jurisdiction to do so, even if the opposing party's claims have been dismissed or otherwise resolved.
(As amended Dec. 27, 1946, eff. Mar. 19, 1948; Jan. 21, 1963, eff. July 1, 1963; Feb. 28, 1966, eff. July 1, 1966; Mar. 2, 1987, eff. Aug. 1, 1987; Apr. 30, 2007, eff. Dec. 1, 2007; Mar. 26, 2009, eff. Dec. 1, 2009.)

Rule 14. Third-Party Practice
(a) When a Defending Party May Bring in a Third Party.
(1) Timing of the Summons and Complaint. A defending party may, as third-party plaintiff, serve a summons and complaint on a nonparty who is or may be liable to it for all or part of the claim against it. But the third-party plaintiff must, by motion, obtain the court's leave if it files the third-party complaint more than 14 days after serving its original answer.
(2) Third-Party Defendant's Claims and Defenses. The person served with the summons and third-party complaint一the (‘third-party defendant'':
(A) must assert any defense against the third-party plaintiff's claim under Rule 12;
(B) must assert any counterclaim against the third-party plaintiff under Rule 13(a), and may assert any counterclaim against the third-party plaintiff under Rule 13(b) or any crossclaim against another third-party defendant under Rule 13(g);
(C) may assert against the plaintiff any defense that the third-party plaintiff has to the plaintiff's claim; and
(D) may also assert against the plaintiff any claim arising out of the transaction or occurrence that is the subject matter of the plaintiff's claim against the third-party plaintiff.
(3) Plaintiff's Claims Against a Third-Party Defendant. The plaintiff may assert against the third-party defendant any claim arising out of the transaction or occurrence that is the subject matter of the plaintiff's claim against the third-party plaintiff. The third-party defendant must then assert any defense under Rule 12 and any counterclaim under Rule 13(a), and may assert any counterclaim under Rule 13(b) or any crossclaim under Rule 13(g).
(4) Motion to Strike, Sever, or Try Separately. Any party may move to strike the third-party claim, to sever it, or to try it separately.
(5) Third-Party Defendant's Claim Against a Nonparty. A third-party defendant may proceed under this rule against a nonparty who is or may be liable to the third-party defendant for all or part of any claim against it.
(6) Third-Party Complaint In Rem. If it is within the admiralty or maritime jurisdiction, a third-party complaint may be in rem. In that event, a reference in this rule to the ‘‘summons'' includes the warrant of arrest, and a reference to the defendant or third-party plaintiff includes, when appropriate, a person who asserts a right under Supplemental Rule C(6)(a)(i) in the property arrested.

(b) When a Plaintiff May Bring in a Third Party. When a claim is asserted against a plaintiff, the plaintiff may bring in a third party if this rule would allow a defendant to do so.
(c) Admiralty or Maritime Claim.
(1) Scope of Impleader. If a plaintiff asserts an admiralty or maritime claim under Rule 9(h), the defendant or a person who asserts a right under Supplemental Rule C(6)(a)(i) may, as a third-party plaintiff, bring in a third-party defendant who may be wholly or partly liable一either to the plaintiff or to the third-party plaintiff一for remedy over, contribution, or otherwise on account of the same transaction, occurrence, or series of transactions or occurrences.
(2) Defending Against a Demand for Judgment for the Plaintiff. The third-party plaintiff may demand judgment in the plaintiff's favor against the third-party defendant. in that event, the third-party defendant must defend under Rule 12 against the plaintiff's claim as well as the third-party plaintiff's claim; and the action proceeds as if the plaintiff had sued both the third-party defendant and the third-party plaintiff.
(As amended Dec. 27, 1946, eff. Mar. 19, 1948; Jan. 21, 1963, eff. July 1, 1963; Feb. 28, 1966, eff. July 1, 1966; Mar. 2, 1987, eff. Aug. 1, 1987; Apr. 17, 2000, eff. Dec. 1, 2000; Apr. 12, 2006, eff. Dec. 1, 2006; Apr. 30, 2007, eff. Dec. 1, 2007; Mar. 26, 2009, eff. Dec. 1, 2009.)

Rule 15. Amended and Supplemental Pleadings
(a) Amendments Before Trial.
(1) Amending as a Matter of Course. A party may amend its pleading once as a matter of course no later than:
(A) 21 days after serving it, or
(b) if the pleading is one to which a responsive pleading is required, 21 days after service of a responsive pleading or 21 days after service of a motion under Rule 12(b), (e), or (f), whichever is earlier.
(2) Other Amendments. In all other cases, a party may amend its pleading only with the opposing party's written consent or the court's leave. The court should freely give leave when justice so requires.
(3) Time to Respond. Unless the court orders otherwise, any required response to an amended pleading must be made within the time remaining to respond to the original pleading or within 14 days after service of the amended pleading, whichever is later.

(b) Amendments During and After Trial.
(1) Based on an Objection at Trial. If, at trial, a party objects that evidence is not within the issues raised in the pleadings, the court may permit the pleadings to be amended. The court should freely permit an amendment when doing so will aid in presenting the merits and the objecting party fails to satisfy the court that the evidence would prejudice that party's action or defense on the merits. The court may grant a continuance to enable the objecting party to meet the evidence.
(2) For Issues Tried by Consent. When an issue not raised by the pleadings is tried by the parties' express or implied consent, it must be treated in all respects as if raised in the pleadings. A party may move一at any time, even after judgment一 to amend the pleadings to conform them to the evidence and to raise an unpleaded issue. But failure to amend does not affect the result of the trial of that issue.