Concept

Choosing the Right Track

Amendment as of right or by leave

Choosing the Right Track

Rule 15(a) sends every change to a pleading before trial down one of two tracks, and the first task on any fact pattern is to decide which track the pleader is on. On the first track, a party amends once as a matter of course within 21 days after serving the pleading or, when the pleading is one to which a responsive pleading is required, within 21 days after service of a responsive pleading or of a Rule 12(b), (e), or (f) motion, whichever is earlier.¹ On the second track, which covers all other cases, the party needs the opposing party's written consent or the court's leave.² Whichever track produces the amended pleading, the rule then fixes the time to respond to it.³ The earlier sections taught these pieces one at a time; this section puts them in the order a problem presents them.

The track determines what the pleader must show. On the first track the pleader amends of right, without a motion and without a ruling.⁴ On the second the pleader depends on the opponent's written agreement or on a judge's discretion, which weighs the reason for amending, the pleader's diligence, the number of earlier amendments, the futility of the change, and above all the prejudice to the opponent's preparation.⁵ Place the pleader on the second track by mistake, and you demand a showing the rule never required. Place the pleader on the first by mistake, and you approve a filing the rules do not authorize.

The questions that decide the track come in a fixed order, because each answer depends on the one before it. Whether a response is required determines whether the second window exists at all, and whether the free amendment is already spent determines whether either window matters.

Exam Analysis Steps

Run these steps in order, with the dates in hand, before stating any conclusion.

Identify the pleading the party wants to change and decide whether a responsive pleading is required to it. A complaint requires one; an answer typically does not.
Count 21 days from the date the pleader served that pleading. That day ends the first window.
If a responsive pleading is required, find the earlier of the service of a responsive pleading and the service of a Rule 12(b), (e), or (f) motion, and count 21 days from that date. That day ends the second window.
Confirm that the pleader has not already used the one free amendment. The two windows are alternatives for a single amendment, so a second change goes to the next step even if a window is still open.
If no window remains or the free amendment is spent, ask whether the opposing party has consented in writing. If not, move for leave, attach the proposed amendment, and test the motion against the grounds for refusing leave covered above: delay or bad faith, prejudice, futility, and repeated failure to cure.
Once the amended pleading is effective, compute any required response. It is due at the later of the time remaining to respond to the original pleading and 14 days after service of the amended pleading, unless the court has ordered otherwise.

Steps three and four cause most of the errors. The second window runs from whichever of the opponent's two filings comes first, so a later answer does not extend it. An amendment, once served, restarts nothing: it opens no new 21-day period. And amendment without leave is possible only once under any circumstance, so a pleader who uses the free amendment in one window has none left for the other.⁶

The number everyone remembers is twenty-one, and it is complete for only one kind of pleading. A complaint requires a responsive pleading, so the plaintiff holds both windows. The second opens when the defendant serves an answer or a Rule 12(b), (e), or (f) motion, and the defendant decides when that happens.⁷ If the defendant serves an answer on day six after the complaint was served, the plaintiff may amend as a matter of course through day twenty-seven.⁸ A plaintiff who amends on day twenty-eight, two weeks after the defendant served a motion to dismiss for failure to state a claim, is still inside the second window, although the one-number answer would call that amendment late.⁹

An answer is different. It typically requires no responsive pleading, so a defendant who wants to change one has only the 21 days after serving it, and the second window never opens.¹⁰ The one-number answer is right for the defendant amending an answer and incomplete for the plaintiff amending a complaint, which is why step one comes before any counting.

A pleader who has missed both windows must seek leave, and the sequence shows why. Two homeowners sue a contractor for negligent construction on February 1. On February 15 the contractor serves a Rule 12(b)(6) motion arguing that state law immunizes contractors from negligence suits over home construction. On March 15 the homeowners seek to amend to allege that the contractor was reckless, a claim to which the immunity would not apply, and the contractor objects.¹¹ The complaint requires a response, so two windows were open to the homeowners. Assuming service followed filing promptly, the first closed about February 22. The second ran 21 days from the February 15 motion and closed March 8. March 15 falls a week later, and the contractor's objection removes the written-consent route. The homeowners therefore need leave, which means a motion with the proposed amended complaint attached.¹² On these facts the court should freely give it. The amendment is the homeowners' first, offered six weeks into the case, and it answers the motion rather than delaying the case. Recklessness falls outside the immunity, so the change is not futile on its face, and nothing suggests it would upset the contractor's preparation.¹³ Had the homeowners filed the same amendment on or before March 8, it would have taken effect on filing without anyone's permission.

Hypothetical Illustration

A plaintiff serves a complaint on May 1, and the defendant's answer is due May 22. On May 12, day eleven, before the defendant has answered or moved, the plaintiff files and serves an amended complaint adding a claim. The complaint requires a response, the plaintiff has not amended before, and the filing falls within 21 days after service, so the amendment takes effect when filed. The defendant's response to the amended complaint is due at the later of two dates: May 22, the time remaining on the original deadline, or May 26, which is 14 days after May 12. The later date controls, so the response is due May 26.

Suppose the plaintiff files a second amended complaint on May 15. The date is still well inside 21 days of service, but the free amendment was spent on May 12, and the running response period gives the plaintiff no further right to amend. The second filing needs the defendant's written consent or the court's leave.

The response deadline comes last because it depends on the date the amended pleading was served, and only the earlier steps fix that date. A court order setting a different time displaces the formula altogether.¹⁴

Choosing the Right Track

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