Defenses That Survive Omission

The earlier sections show how many ways a defendant can lose a personal-jurisdiction objection under Rule 12(b)(2).¹ Leaving it out of a first response forfeits it, and so does omitting it from a consolidated pre-answer motion, missing the short window for amending the answer, or failing to press it after pleading it. A student who has absorbed those rules may conclude that every defense on the Rule 12(b) list is just as fragile. That conclusion is wrong. Rule 12 sorts its defenses into three groups, and each group attaches a different penalty to silence:²

The technical defenses (improper venue, lack of personal jurisdiction, insufficient process, and insufficient service of process) are deemed waived unless the defendant raises them by a Rule 12 motion or includes them in the answer.³
The merits-based defenses (failure to state a claim and failure to join a Rule 19 party) are not waived by omission from a motion or an answer.
Subject-matter jurisdiction, the only defense in its group, may be raised at any point in the litigation, even on appeal, and even by the court on its own initiative.

The grouping tracks what each defense protects. The technical defenses protect the defendant's own interest in where and how the suit is brought, an individual right, as the opening section of this chapter explained, and a party can give up a right of that kind by saying nothing. The merits-based defenses test whether the plaintiff has a legally sufficient claim, a question a defendant may need time to answer, so the Rules let the defendant press them later in the case. Subject-matter jurisdiction rests on the limited authority that federal courts hold under the dual-sovereignty features of our federal system, and the Rules are unwilling to let anyone forfeit it.⁴

An exam question that mixes defenses from different groups therefore calls for sorting before analysis. Place each defense in its group, then ask what the defendant's earlier filings cost it. The two subsections below follow the defenses that escape the waiver rule, beginning with the one that nothing can remove from the case.

Subject-Matter Jurisdiction

Rule 12(b)(1) puts lack of subject-matter jurisdiction on the same list as lack of personal jurisdiction, but a defendant's silence has opposite effects on the two.⁵ Subject-matter jurisdiction is a court's constitutional and statutory power to hear a particular kind of case. Only the four defenses in Rule 12(b)(2) through (5) are waived by omission from a pre-answer motion or an answer, and subject-matter jurisdiction is not among them.⁶ It is never waived. When the lack appears at any time in the case, the court must dismiss, as Rule 12(h)(3) commands.⁷

Three consequences follow. A party may raise the objection at any point, even for the first time on appeal, either in the responsive pleading or by a separate motion to dismiss.⁸ The court has an independent obligation to inquire into its own subject-matter jurisdiction and may raise any related issue itself, at the trial or the appellate level.⁹ And because the parties need not raise the defect, a court that spots it acts without prompting. The Supreme Court has dismissed cases on its own motion because the district court never had subject-matter jurisdiction.¹⁰ These statements describe direct review, meaning the trial court and the appeal from its judgment, and on that path no stage of the case is too late for the objection.¹¹

All three consequences come from one source. Congress vests subject-matter jurisdiction in the federal courts, and the parties cannot enlarge it by their actions, so it is not a defense that the defendant may assert or withhold as it pleases.¹² Personal jurisdiction, as the opening section of this chapter explained, protects the defendant's individual liberty, and a person may give up a liberty that is the person's own. Subject-matter jurisdiction belongs to no party. It reflects structural limits on the power of the federal courts and the federal government, and that difference between structural limits and personal rights explains its durability.¹³ A waiver works by treating a party's silence or agreement as consent, and consent has force only when the person consenting holds what is being surrendered. The defendant holds nothing here to give up, so neither silence nor a stipulation can supply what the Constitution and Congress withheld. The same reasoning explains why no deadline applies: a deadline converts a late objection into consent, and consent accomplishes nothing in this setting.

Exam writers like to test the contrast by having a defendant omit both defenses from the same motion. The question to ask is what survives when a defendant files only a Rule 12(b)(6) motion and later asserts that the court lacks both kinds of jurisdiction.

Hypothetical Illustration

A Georgia homeowner sues a Montana contractor and a Georgia subcontractor in federal court in Georgia. The complaint pleads only state-law claims and invokes only diversity of citizenship. The Montana contractor believes it has no meaningful contact with Georgia, yet its first filing is a Rule 12(b)(6) motion arguing that the complaint fails to state a claim. The motion says nothing about jurisdiction, and the court denies it. Four months later the contractor moves to dismiss for lack of personal jurisdiction and for lack of subject-matter jurisdiction. The first objection is lost: it was available when the contractor made its first motion, and the contractor left it out. The second succeeds: the homeowner and the subcontractor are both Georgia citizens, complete diversity is missing, and the court has no power to proceed.

The two objections meet different provisions of Rule 12. The personal-jurisdiction defense falls within the waiver for Rule 12(b)(2) through (5) defenses omitted from a first motion, which earlier sections traced. Subject-matter jurisdiction stands outside that waiver, and Rule 12(g)(2) itself excepts the defenses addressed in Rule 12(h)(2) and (3) from its bar on a second motion, so the contractor's later motion is not barred.¹⁴ Rule 12(h)(3) impliedly permits a motion to dismiss for lack of subject-matter jurisdiction at any time.¹⁵ Even if the contractor had never filed that motion, the court would have been bound to dismiss once it noticed the defect, because the parties' silence cannot confer jurisdiction.¹⁶

The asymmetry continues on appeal. Suppose the contractor lost at trial and urged both defects on appeal. The court of appeals must hear the subject-matter objection, which it would have to examine in any event. The personal-jurisdiction objection was lost when it was omitted, and no later vehicle revives it.¹⁷

The two defenses also differ in how courts order their decisions. A court that faces a subject-matter objection together with a personal-jurisdiction challenge or an attack on the merits must decide the jurisdictional issues before it reaches the merits, as Steel Co. v. Citizens for a Better Environment holds. The court may, however, resolve a personal-jurisdiction challenge and dismiss the action without first ruling on subject-matter jurisdiction under Ruhrgas AG v. Marathon Oil Co.¹⁸ Neither defense can be bypassed to reach the merits, and only the personal-jurisdiction defense can be given up.

Merits-Based Defenses

Two defenses on the Rule 12(b) list survive omission from a pre-answer motion: failure to state a claim and failure to join a party under Rule 19. Rule 12(h)(2)(A) lets a defendant raise either one "in any pleading allowed or ordered under Rule 7(a)."²⁰ Rules 12(b)(6) and 12(b)(7) are the provisions that name them.²¹ An answer is a pleading of that kind, so a defendant who left either defense out of a pre-answer motion, or who never filed a motion, can still state it in the answer. The four technical defenses behave differently, because they are waived once they are left out of the first Rule 12 response. The merits-based defenses belong to the middle group described at the start of this section. Omission does not destroy them, although, as the paragraphs below show, neither is preserved forever.

Each of the two defenses has its own reason for the gentler treatment, and neither reason fits the technical defenses. Failure to state a claim is a fundamental challenge to the merits of the plaintiff's claim. A defendant who has committed no legal wrong should not forfeit that challenge by missing a moment at the start of the suit, and a strict waiver rule would revive the rigidity of the common law, which held parties to their original pleadings even when later investigation turned up defenses that went to the heart of the dispute. The defect is also not always easy to see at the outset, since whether a complaint states a legally sufficient claim can take real study to answer. The Rule 19 defense is enmeshed with the substance of the suit in the same way, because the court must analyze the merits just to decide who is "required." If either defense could be waived by omission, the case might go forward without a required party or, anomalously, on a claim that has no support in the governing law.²²

The technical defenses are a different kind of objection. They are procedural, and they should be apparent as soon as the defendant receives the summons and complaint, so silence about them can fairly be read as acceptance. The Rules therefore require immediate assertion even when the complaint does not reveal every fact. Counsel who doubts that venue is proper should raise the defense, subject to the restraints of Rule 11, or move under Rule 6(b) for more time to investigate before responding.²³

Because the two merits-based defenses survive omission, the Rules identify the places where they can reappear, and each of those places comes after the first response:

Any later pleading permitted under Rule 7(a), which includes the answer itself.²⁴
A motion for judgment on the pleadings under Rule 12(c), made after the pleadings are closed but early enough not to delay trial.²⁵
The trial itself.²⁶

The forgiveness ends with the trial. A defendant who asserts failure to state a claim or failure to join a required party after trial has ended is too late, and the defenses are waived if they were not asserted before the close of trial.²⁷

The list contains no second pre-answer motion, and the omission is deliberate. Rule 12(g)(2) still bars a defendant who has already made a Rule 12 motion from making another on an available defense that the first motion left out. The exception for these two defenses operates through Rule 12(h)(2), which lets them return by way of a later pleading, a Rule 12(c) motion, or trial. A defendant who left failure to state a claim out of a first pre-answer motion therefore generally cannot file a second pre-answer motion on it, and the refusal costs the defendant one vehicle while leaving three others open.²⁸ A second pre-answer motion is allowed only when the defense was not yet available at the time of the first, as when the defendant never received a copy of the complaint and could not have known what it alleged.²⁹

The supplier's two defenses began in the same position, each omitted from the same motion, and they ended in different ones because only one of them is protected by Rule 12(h)(2). For the protected defenses, the question that matters is whether the trial has ended, because the contents of the first response no longer control.

An exam problem that lists several omitted defenses is therefore sorted defense by defense. Improper venue, lack of personal jurisdiction, insufficient process, and insufficient service of process are gone once they are left out of the first response. Failure to state a claim and failure to join a required party return through a later pleading, a Rule 12(c) motion, or trial, but not after trial. Lack of subject-matter jurisdiction returns at any time.³⁰