Limits on the Duty

Rule 13(a)(1)(A) supplies the relatedness half of the compulsory-counterclaim duty: it reaches a claim that arises out of the transaction or occurrence that is the subject matter of the opposing party's claim.¹ A claim can pass that test and still fall outside the duty, because the Rule withdraws the command in four situations. Two appear in Rule 13(a)(2), which opens “The pleader need not state the claim if:” and then lists conditions that release the pleader however closely the claim tracks the opposing party's.² The other two are built into Rule 13(a)(1): the pleader must have the claim “at the time of its service,” and the claim must not require adding a party over whom the court cannot acquire jurisdiction.³ A related claim that falls within any of the four is not compulsory, and leaving it out forfeits nothing.⁴

The four limits share one logic. Rule 13(a) enforces itself by forfeiture: a party who fails to plead a compulsory counterclaim cannot bring a later independent action on it.⁵ A penalty that heavy is fair only when the pleader could have put the claim in the pending case, and each limit marks a place where that premise fails. A claim that has not fully matured cannot be pleaded, and compelling it would let a plaintiff who fears a claim force the defendant's hand by suing first. A claim that requires an unreachable third party would be dismissed for lack of that party, so requiring the pleader to assert it is self-defeating. A claim already pending elsewhere should not be pulled out of the forum its owner chose just because the plaintiff chose a different one. And a defendant sued by attachment has not been brought fully before the court, so penalizing its silence is inequitable.⁶

The subsections below take the limits in turn: timing and maturity, the unreachable required party, the claim pending elsewhere, and the attachment-based suit. On an exam, these limits come after the transaction-or-occurrence analysis. A stem that describes a closely related claim and then adds a claim that ripens later, an outside party, a parallel lawsuit, or a seizure of property is signaling that the answer may have changed.

Timing and Maturity

Rule 13(a)(1) measures the duty at a fixed moment. A pleading must state as a counterclaim any claim that, “at the time of its service,” the pleader “has” against an opposing party, if the claim also meets the relatedness condition.⁷ The verb matters as much as the date: the duty reaches what the pleader holds when the pleading goes out and leaves alone a claim that has not fully matured. Without that limit, a plaintiff who fears a claim will be brought against her after more thorough development could force the defendant's hand by suing first.⁸

Rule 13(e) handles the claim that the timing limit leaves out. It provides that the court may permit a party to file a supplemental pleading asserting a counterclaim that matured or was acquired after the party served an earlier pleading.⁹ Because the court decides whether to permit it, the pleader cannot demand supplementation as of right. The pleader need not seek it either: a defendant need not assert any counterclaim that matured or was acquired after answering, so one who forgoes supplementation loses nothing and may sue on the claim separately.¹⁰

The benchmark is the pleader's own earlier pleading, not the opposing party's complaint. Cabrera v. Courtesy Auto, Inc. applied it to a lender's deficiency counterclaim: Rule 13(e) mattered only if the claim matured or was acquired after the lender served its own answer, whatever events the buyer's complaint described. The court dated the deficiency from the point at which the debt came due, not from the later sale that fixed the amount, so a claim whose dollar figure is set afterward can still be a claim the pleader already had.

Maturity turns on when the pleader could first have sued successfully, and a verdict confirming a theory the pleader has already asserted does not postpone it. Mali v. Federal Insurance Co. is the cleanest example. An insurer defended on the ground that the insureds' fraud voided the policy, and a jury agreed. The insurer had pleaded no restitution counterclaim and never sought to amend its answer to add one, and the court of appeals affirmed the denial of its later request to recover earlier payments. The insurer argued that the claim did not accrue until the verdict made the policy void, and the argument failed: the insurer had asserted the fraud from the outset and could have sued as soon as it did. If confirmation by the factfinder counted, a pleader could hold back every claim that depends on its own defense until trial ended, and the related facts would be tried twice.

The Deshotel litigation applies the same logic to a claimant who waited. The court treated the interpleader's attack on Smith's rights as direct damage to her, whatever the later outcome of her beneficiary claims, because the attack forced her to pay attorney fees and legal costs in her defense.¹¹ Her delictual action against New York Life was therefore barred as a compulsory counterclaim that she failed to plead in the interpleader proceeding.¹²

A pleader also cannot postpone ripeness by its own inaction. In a dispute over pooled mineral interests, Browning knew before December 1996 that the Lueckes opposed the pooling, and their breach-of-contract suit should have told Browning that they would not authorize it. With due diligence, the court said, Browning could have demanded execution of the agreement and filed its counterclaim before the bench trial, and the court held that the trial court did not err in striking the counterclaim.¹³ A step within the pleader's own control cannot be held in reserve to keep a claim from ripening.

The duty also attaches only to a pleading. A defendant who wins dismissal of the main claim by motion without filing an answer need not assert any counterclaim, and a defendant who defaults need not worry about the Rule.¹⁴ The point matters in a case like the collision suit between Sheila Blanton and Ethel King, where the plaintiff voluntarily dismissed with prejudice after a cash settlement, the record included no answer, and the defendant filed no counterclaim.¹⁵ Whether the Rule could ever have reached such a defendant starts with whether the defendant served a pleading from which a claim could have been omitted.

Older opinions refer to Rule 13(f) as the route for adding an omitted counterclaim, but that subdivision has been abrogated.¹⁶ Two routes now divide the territory. A claim that matured or was acquired after the earlier pleading enters, if at all, by supplemental pleading under Rule 13(e). A claim that already existed at service and was left out enters by amendment under Rule 15, which federal courts have commonly applied generously while the first action is still pending.¹⁷ A later section takes up amendment and the consequences of omission.

Having the claim at service also raises a limitations worry, because a related claim may look stale by the time the defendant pleads it. The majority view is that the plaintiff's suit tolls or suspends the limitations period on a compulsory counterclaim, which prevents a plaintiff from delaying suit until the period has almost run on the defendant's claim.¹⁸ A later section develops tolling.

Exam Analysis Steps

Because the duty depends on a date, a timing problem is best run by fixing the dates before asking anything else:

Ask whether the pleader has served a pleading at all, since a defendant that has only moved to dismiss, or has defaulted, has nothing from which a claim could have been omitted.
Fix the date on which the pleader served its own pleading, not the date of the plaintiff's complaint.
Determine when the claim accrued by asking when the pleader could first have sued on it successfully.
Treat a claim that accrued on or before the service date as one the pleader has: it is compulsory if related, and barred if omitted unless the pleading is amended under Rule 15.
Treat a claim that matured or was acquired after the service date as outside the duty, so that the pleader may seek leave under Rule 13(e) or sue separately.

The third step decides most disputes, because pleaders facing a forfeiture argue for a later maturity date. The argument fails when the pleader's theory was already in the pleadings or when the missing step lay within the pleader's control.

Unreachable Required Parties

Rule 13(a)(1)(B) supplies the second condition of the duty: the related claim must be one that “does not require adding another party over whom the court cannot acquire jurisdiction.”²⁰ The default is that a related claim must be pleaded. Renoir's claim arises out of the same paint job that gave rise to Morisot's claims, so the Rules do more than authorize him to assert it: they require him to.²¹ Clause (B) carves one exception out of that command. When deciding the claim would require a person the court cannot reach, the claim is not compulsory, and a pleader who leaves it out does not lose it.

The jurisdiction the clause speaks of is personal jurisdiction, meaning the court's power over the added person.²² The reason lies in how Rule 13(a) enforces itself. Forfeiture is fair only when the pleader could have placed the claim in the pending case, and a claim that cannot be tried without an unreachable person would be dismissed for want of that person. Requiring the pleader to assert it would be self-defeating, and the clause removes the dilemma by releasing the claim for a later suit in a court that can reach everyone it needs.²³

Subject-matter jurisdiction is not the concern. As long as the same-transaction test is satisfied, a counterclaim against third persons falls within the court's supplemental jurisdiction.²⁴ The reach is generous toward defendants. In a casebook illustration, MacArthur may assert a counterclaim that he could not have asserted as an original claim: had he sued Halsey and Spruance together, the case would have been dismissed for lack of diversity. Congress preserved a defendant bias in §1367 by barring claims by plaintiffs that are inconsistent with complete diversity while allowing similar claims by defending parties, and the courts had earlier given defendants hauled into court against their will broad opportunities to settle all claims arising from the events in suit.²⁵ The Supreme Court's older decisions show the same attitude toward compulsory counterclaims. In Moore v. N.Y. Cotton Exchange it sustained jurisdiction over a defendant's compulsory counterclaim arising from the same transaction, although the plaintiff's federal claim had been dismissed and the counterclaim had no independent jurisdictional basis, as the Court recounted in Finley v. United States.²⁶

Personal jurisdiction is different because it protects a particular person from being bound by a court with no authority over that person. The original plaintiff chose the forum, while a stranger to the suit made no such choice, and a pleading rule cannot enlarge the court's power over the stranger.

The device for bringing such a person in is Rule 13(h), which provides that Rules 19 and 20 govern the addition of a person as a party to a counterclaim.²⁷ In a collision illustration, Bob sues Alan for $100,000, and Alan has a $20,000 claim against Carol arising from the same accident. Rule 13(h), together with Rule 20(a)(2), lets Alan join Carol because the claim arises from the same transaction and shares common questions of negligence and causation. Personal jurisdiction over Carol is proper because the state's long-arm statute allows out-of-state mail service on anyone involved in an in-state accident, and subject-matter jurisdiction is proper because the court already has diversity jurisdiction over Bob's claim and supplemental jurisdiction over the rest.²⁸ Nothing in clause (B) excuses Alan, because the court can reach Carol. Added expense, a wish to keep the case simple, or a third person's reluctance to appear does not trigger the clause. Only the court's inability to acquire jurisdiction over that person does, because only then is the claim one the pleader could not have put into the case.

Associated Dry Goods Corp. v. Tower Financial Corp. shows the payoff when the missing person can be reached. A sublessor sued its subtenant for unpaid rent, and the district court dismissed for failure to join the building's landlord. The Second Circuit reversed, because the subtenant could avoid any prejudice by asserting a compulsory counterclaim against the sublessor and adding the landlord under Rule 13(h). The defendant's own power to join the missing person answered the objection to going forward, and clause (B) is the provision that withholds that power when the court cannot reach the person.

Hypothetical Illustration

A contractor sues a homeowner in federal court for the unpaid balance on a kitchen renovation. The homeowner holds a claim that the cabinets were defective, but the defect traces to a design supplied by an out-of-state architect with no contacts with the forum state, and the claim cannot fairly be decided without the architect. No method of service reaches the architect, so the court cannot acquire jurisdiction over that person. The claim grows out of the renovation the contractor sued on, yet it is not compulsory: the homeowner may answer without pleading it and sue later where the architect can be reached, and nothing is forfeited. An architect who kept an office in the forum state and could be served there would change the result, because the homeowner would then have to plead the claim and add the architect under Rule 13(h).

A stem that says the third person has no contacts with the forum or cannot be served is pointing at clause (B). A stem that says only that the third person shares the defendant's citizenship, or that joining the person would be inconvenient, is pointing at a nonexistent exception, because supplemental jurisdiction covers the first and the Rule does not recognize the second.

Claims Already Pending Elsewhere

Rule 13(a)(2)(A) releases a pleader from the duty to state a counterclaim if “when the action was commenced, the claim was the subject of another pending action.”³⁰ Even a claim that grows out of the plaintiff's own transaction need not be pleaded again once the pleader has already put it before another court. This limit differs from the maturity limit in the moment it examines. Maturity asks what the pleader holds on the day it serves its pleading, while the pending-action exception looks back to the day the plaintiff's action began and asks what was already on file elsewhere.

The exception protects the forum the pleader chose first. It would be inappropriate to let the plaintiff's choice of a different forum override the prior forum choice for the counterclaim,³¹ so the plaintiff cannot force the defendant's claim into a court of the plaintiff's choosing if that claim is already pending elsewhere.³² A defendant who sued first on the claim made its choice before the plaintiff filed anything, and a plaintiff who sues second on related facts cannot take that choice away.

Because the clause fixes its moment at the commencement of the plaintiff's action, the plaintiff's filing date controls and later events do not. A defendant who has just been served cannot create the exception by filing a suit on the related claim elsewhere, because that suit was not pending when the plaintiff's action was commenced. Measure from the plaintiff's filing, not from the day the answer is due.

Hypothetical Illustration

A developer sues a roofing contractor on March 1 over defective work on a warehouse. Three weeks earlier, the contractor had filed its own suit in another court for the unpaid balance on that same job, and that suit is still pending when the contractor serves its answer on April 15. When the developer's action was commenced, the contractor's claim was already the subject of another pending action, so the contractor need not plead it as a counterclaim and may keep litigating in the forum it chose.

In a second dispute, a franchisor sues a franchisee on March 1 for unpaid royalties. The franchisee holds a related claim that the franchisor misstated projected sales, and it files its own suit on that claim on April 5, after being served but before answering. By the April 15 answer date the claim is pending elsewhere, yet it was not pending when the franchisor's action began. The exception is unavailable, and the claim remains a compulsory counterclaim in the franchisor's action.

Both defendants hold related claims, and both have a separate suit on file by the time they answer. Only the filing dates differ, and they decide who keeps the chosen forum. Rule 13(a) thus rewards the party who files first: a quick plaintiff can choose the forum for the defendant's claim, because the slower party must assert its related claim as a counterclaim.³³

re Marshall shows the same timing question in litigation that ran on two tracks. Vickie Lynn Marshall asserted her counterclaim in a bankruptcy proceeding and did not join the Texas will contest until 1998, well after she had pleaded it. The court of appeals therefore held the pending-action exception unavailable for the bankruptcy counterclaim, because the will contest had not yet been joined when she asserted it there.³⁴ The district court had looked at the same claim from the Texas side and concluded that she was not obliged to bring it as a compulsory counterclaim in the will contest, because it was already pending before the bankruptcy court when she joined that contest. It relied on a Texas rule that likewise excludes claims that are the subject of a pending action, so that part of the reasoning rests on a state counterpart and does not bind a federal court applying Rule 13(a).³⁵ One claim in two proceedings produced two different answers. The exception operates only in the later-commenced action, where the claim was already pending elsewhere, and gives no help in the earlier one.

The exception frees the pleader from a duty and does not forbid pleading the claim. The Marshall court added that even if the claim had been pending in Texas, a defendant who elects to interpose a pending claim as a counterclaim should be allowed to do so, and the counterclaim will be treated as if it were compulsory and so falls within ancillary jurisdiction, the older name for what is now supplemental jurisdiction.³⁶ The result follows from the exception's purpose. It protects the defendant's choice of forum, and once the defendant chooses the plaintiff's court for the claim, nothing is left to protect.

The label matters for jurisdiction. A permissive counterclaim must have an independent jurisdictional basis, while a compulsory counterclaim is generally accepted as falling within the ancillary jurisdiction of the federal courts even when a state court would ordinarily hear it.³⁷ How §1367 has changed the picture for permissive counterclaims belongs to the later section on supplemental jurisdiction. The Seventh Circuit, for one, vacated the dismissal of a permissive counterclaim in a Consumer Leasing Act class action and remanded for the exercise of §1367 discretion, asking only for “a loose factual connection between the claims.”³⁸

Courts have applied the same protective idea to a defendant who faces two actions on related facts. A person defending two separate actions, with a counterclaim that is transactionally related to both, may choose the action in which to assert it and need not file it in the first proceeding brought.³⁹ This gloss comes from case law and is not in the text of Rule 13(a)(2)(A). Under clause (A) the claim is already being litigated elsewhere, while under the gloss the claim is being litigated nowhere and the defendant selects the place. The reasoning is the same. Each plaintiff chose a forum, so neither has a better claim to receive the defendant's counterclaim, and requiring the claim in both actions would litigate it twice. A defendant may also plead any of these excepted claims anyway, as a permissive counterclaim.⁴⁰

On an exam, a stem that mentions a second lawsuit filed by the defendant is asking for a comparison of dates. If the defendant's claim was already the subject of a pending action on the day the plaintiff's action was commenced, the defendant is excused and keeps its chosen forum, though it may still plead the claim and have it treated as compulsory for jurisdiction. If the defendant sued elsewhere only after the plaintiff's action began, the duty to plead the related claim remains.

Attachment-Based Suits

Rule 13(a)(2)(B) supplies the last limit, and it protects a defendant whom the plaintiff has pursued through the defendant's property instead of through personal authority over the defendant. The pleader need not state an otherwise compulsory counterclaim if 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 the rule.⁴² Attachment is the seizure of a defendant's property located in the forum. A court that takes jurisdiction on that basis cannot render a full personal judgment against the defendant, and the suit is called quasi in rem because it proceeds against the property instead of the person.

The reason follows from what makes the compulsory rule defensible. Forfeiture for silence is fair when the plaintiff has brought the defendant fully before the court, so that the defendant is already answering there and can settle every related dispute in one case. If the court cannot obtain full in personam jurisdiction over the defendant, it would be inequitable to penalize the defendant for not asserting related counterclaims.⁴³ Without the exception a defendant would have to choose between losing a related claim and pleading it in a court whose power has so far reached nothing but a bank account or a parcel of land.

The text ties the exception to the particular claim, because it asks whether the process established personal jurisdiction over the pleader “on that claim.”⁴⁴ A suit that merely involves an attachment does not automatically qualify. If the defendant was also served personally in the forum, or the court otherwise acquired personal jurisdiction on the plaintiff's claim, the process did establish that jurisdiction, and the ordinary compulsory rule applies.

The exception shields silence, and the second condition shows how quickly a defendant can lose it. If the defendant asserts any counterclaim, the compulsory-counterclaim rule returns to normal operation.⁴⁵

The contractor pleaded nothing against the plaintiff, and the broker pleaded something. That choice explains the difference. The exception exists because the defendant has been drawn into the forum without full jurisdiction, and a defendant who uses the forum to seek affirmative relief is no longer held there against its will. Once the defendant chooses to assert any counterclaim, it seems appropriate to compel assertion of all the others that would normally be compulsory.⁴⁶ The rule's words are “any counterclaim,” so they are not limited to related claims.

A counterclaim can also aim at the seizure itself. In one maritime dispute, Blanc answered and counterclaimed for a declaration that the plaintiff held no maritime lien and so had no right to proceed in rem against the vessel by arrest in Belgium.⁴⁷ A claim of that kind attacks the plaintiff's method of obtaining its hold on the defendant's property, not the underlying dealings, and it leads to Cargill, Inc. v. Sabine Trading & Shipping Co.

The plaintiff in Cargill obtained jurisdiction by attachment, and the Second Circuit held that the defendants, by answering with a counterclaim based solely on damage from the attachment of their assets, did not consent to personal jurisdiction. The claim arose not from the transaction the plaintiff sued on but from the way the plaintiff had obtained jurisdiction. The decision is easy to over-read. The court said that Rule 13(a) does not itself decide whether asserting a counterclaim gives the court personal jurisdiction, and it resolved that question through waiver principles and state attachment law. Two questions are therefore in play: the Rule answers whether the defendant must plead related claims, and waiver principles answer whether pleading a claim exposes the defendant to a personal judgment. Cargill decided the second on facts where the counterclaim was not a related claim at all. It does not show that a defendant can plead a related counterclaim and keep the exception, and on the Rule's own words a defendant who wants the exception should assert no counterclaim.

Exam Analysis Steps

The exception depends on two conditions, and the pleader can lose the second by its own choice, so it is best run as a short sequence:

Identify how the plaintiff obtained the court's power on the claim in suit, asking whether it rests on attachment or other process that gave the court no power to render a personal judgment against the pleader.
Stop if personal jurisdiction over the pleader was established on that claim, because the exception is unavailable and the ordinary compulsory-counterclaim analysis governs.
Ask whether the pleader has asserted or will assert any counterclaim under the rule, since the exception survives only while the pleader asserts none.
Conclude that a pleader who asserts none need not state the related claim and may sue on it later, while a pleader who asserts any counterclaim must state every related claim that is otherwise compulsory.

The fourth step is where defendants most often lose points on an exam, because a stem that mentions an attachment invites the conclusion that nothing is compulsory. The exception lasts only until the defendant pleads a counterclaim, and whether that pleading also waives the personal-jurisdiction objection is a separate question governed by waiver principles.