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 within: (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—at any time, even after judgment—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.
(c) Relation Back of Amendments. (1) When an Amendment Relates Back. An amendment to a pleading relates back to the date of the original pleading when: (A) the law that provides the applicable statute of limitations allows relation back; (B) the amendment asserts a claim or defense that arose out of the conduct, transaction, or occurrence set out—or attempted to be set out—in the original pleading; or (C) the amendment changes the party or the naming of the party against whom a claim is asserted, if Rule 15(c)(1)(B) is satisfied and if, within the period provided by Rule 4(m) for serving the summons and complaint, the party to be brought in by amendment:
(i) received such notice of the action that it will not be prejudiced in defending on the merits; and
(ii) knew or should have known that the action would have been brought against it, but for a mistake concerning the proper party’s identity. (2) Notice to the United States. When the United States or a United States officer or agency is added as a defendant by amendment, the notice requirements of Rule 15(c)(1)(C)(i) and (ii) are satisfied if, during the stated period, process was delivered or mailed to the United States attorney or the United States attorney’s designee, to the Attorney General of the United States, or to the officer or agency.
(d) Supplemental Pleadings. On motion and reasonable notice, the court may, on just terms, permit a party to serve a supplemental pleading setting out any transaction, occurrence, or event that happened after the date of the pleading to be supplemented. The court may permit supplementation even though the original pleading is defective in stating a claim or defense. The court may order that the opposing party plead to the supplemental pleading within a specified time.
Selected Committee Notes
Rule 15(a)(1) is amended to make three changes in the time allowed to make one amendment as a matter of course.
Former Rule 15(a) addressed amendment of a pleading to which a responsive pleading is required by distinguishing between the means used to challenge the pleading. Serving a responsive pleading terminated the right to amend. Serving a motion attacking the pleading did not terminate the right to amend, because a motion is not a “pleading” as defined in Rule 7. The right to amend survived beyond decision of the motion unless the decision expressly cut off the right to amend.
The distinction drawn in former Rule 15(a) is changed in two ways. First, the right to amend once as a matter of course terminates 21 days after service of a motion under Rule 12(b), (e), or (f). This provision will force the pleader to consider carefully and promptly the wisdom of amending to meet the arguments in the motion. A responsive amendment may avoid the need to decide the motion or reduce the number of issues to be decided, and will expedite determination of issues that otherwise might be raised seriatim. It also should advance other pretrial proceedings.
Second, the right to amend once as a matter of course is no longer terminated by service of a responsive pleading. The responsive pleading may point out issues that the original pleader had not considered and persuade the pleader that amendment is wise. Just as amendment was permitted by former Rule 15(a) in response to a motion, so the amended rule permits one amendment as a matter of course in response to a responsive pleading. The right is subject to the same 21-day limit as the right to amend in response to a motion.
The 21-day periods to amend once as a matter of course after service of a responsive pleading or after service of a designated motion are not cumulative. If a responsive pleading is served after one of the designated motions is served, for example, there is no new 21-day period.
Finally, amended Rule 15(a)(1) extends from 20 to 21 days the period to amend a pleading to which no responsive pleading is allowed and omits the provision that cuts off the right if the action is on the trial calendar. Rule 40 no longer refers to a trial calendar, and many courts have abandoned formal trial calendars. It is more effective to rely on scheduling orders or other pretrial directions to establish time limits for amendment in the few situations that otherwise might allow one amendment as a matter of course at a time that would disrupt trial preparations. Leave to amend still can be sought under Rule 15(a)(2), or at and after trial under Rule 15(b).
Abrogation of Rule 13(f) establishes Rule 15 as the sole rule governing amendment of a pleading to add a counterclaim.
Amended Rule 15(a)(3) extends from 10 to 14 days the period to respond to an amended pleading.