Motion to Dismiss Template: Grounds, Format and Filing Guide

What is a motion to dismiss?

A motion to dismiss is a formal request asking the court to throw out a lawsuit, or specific claims within it, before the case proceeds to discovery and trial, on the ground that the complaint is legally defective even if everything it alleges is true. It is a challenge to the legal sufficiency of the pleading, not a trial of the facts.

In US federal court the motion is made under Federal Rule of Civil Procedure 12(b), which lists the recognized grounds. The defendant is not saying "the plaintiff is lying." The defendant is saying "even accepting the plaintiff's version, there is a fatal legal problem" — the court has no power to hear this type of case, the wrong court was chosen, the defendant was never properly served, or the complaint does not describe a legal wrong the law will remedy. Because it is decided on the pleadings alone, it is one of the earliest and cheapest ways to end a case.

What are the grounds for a motion to dismiss?

In federal court, Rule 12(b) sets out seven specific grounds. Each has its own name and its own body of law; you cannot invent a ground outside this list. They break into two families: defects the court can raise on its own (jurisdiction), and defects the defendant must raise or lose.

• 12(b)(1) — Lack of subject-matter jurisdiction. This court has no power to hear this type of case (for example, a purely state-law dispute filed in federal court with no diversity or federal question).
• 12(b)(2) — Lack of personal jurisdiction. This court has no power over this particular defendant, usually for lack of sufficient contacts with the forum state.
• 12(b)(3) — Improper venue. The case was filed in the wrong district even if the court otherwise has jurisdiction.
• 12(b)(4) — Insufficient process. A defect in the summons or complaint documents themselves.
• 12(b)(5) — Insufficient service of process. The papers were not delivered to the defendant in the manner the rules require.
• 12(b)(6) — Failure to state a claim upon which relief can be granted. The most common ground; even taking the facts as pleaded, the complaint does not make out a valid legal claim.
• 12(b)(7) — Failure to join a party under Rule 19. A person who must be part of the case is missing.

When should you file a motion to dismiss?

File it before you file your answer to the complaint. Under Rule 12(b), a motion asserting these defenses "must be made before pleading if a responsive pleading is allowed" — meaning before the answer, not after. In federal court the answer is normally due 21 days after service, and a timely Rule 12(b) motion suspends that clock until the court rules.

Timing is not merely convenient; for some grounds it is decisive.

• Raise it early or lose it. Under Rule 12(h)(1), the personal-jurisdiction, venue, process, and service defenses (12(b)(2)–(5)) are waived if you do not raise them in your first Rule 12 motion or your answer. File the answer first without them and they are gone.
• These survive longer. Failure to state a claim (12(b)(6)) and failure to join a required party (12(b)(7)) can be raised later in the pleadings or even at trial under Rule 12(h)(2).
• This can be raised anytime. Lack of subject-matter jurisdiction (12(b)(1)) can be raised at any point, by any party or the court itself, under Rule 12(h)(3).

How do I write and format a motion to dismiss for court?

A motion to dismiss is a formal court document with a fixed skeleton: caption, the motion itself, a supporting memorandum of law, and a certificate of service. Courts routinely reject or strike filings that ignore local formatting rules, so the format matters as much as the argument.

1. Caption. Court name, case number, and the parties, matching the complaint exactly.
2. The motion. A short statement identifying the moving party and the specific Rule 12(b) subsection(s) you rely on ("Defendant moves to dismiss under Rule 12(b)(6)…").
3. Memorandum of law. The heart of the filing: a statement of the standard of review, the relevant facts as pleaded, and legal argument citing statutes, rules, and controlling case law showing why the claim fails.
4. Prayer for relief. What you want — dismissal, and whether with or without prejudice.
5. Signature block. Attorney name, firm, address, phone, email, and bar number (or the party's information if self-represented).
6. Certificate of service. Confirmation that the opposing party was served, with date and method.

Check the court's local rules and the assigned judge's standing orders before filing: many federal districts impose page limits, require a separate memorandum, and mandate a meet-and-confer conference with opposing counsel first.

What standard does the court apply to a motion to dismiss?

On a Rule 12(b)(6) motion, the court accepts all well-pleaded factual allegations as true and views them in the light most favorable to the plaintiff — but it does not accept legal conclusions, and the complaint must cross a "plausibility" threshold set by two Supreme Court cases. The controlling standard comes from Bell Atlantic Corp. v. Twombly, 550 U.S. 544 (2007) and Ashcroft v. Iqbal, 556 U.S. 662 (2009).

Twombly and Iqbal replaced the older, plaintiff-friendly "no set of facts" test from Conley v. Gibson (1957) with a two-step plausibility analysis:

• Step one — strip the conclusions. The court sets aside bare legal conclusions and "threadbare recitals" of the elements of a claim. These are not entitled to the assumption of truth.
• Step two — test plausibility. Taking the remaining factual allegations as true, the court asks whether they plausibly give rise to an entitlement to relief — more than merely possible, though not a probability requirement.

The court generally looks only at the complaint, documents incorporated in it, and matters of public record. Bringing in outside evidence can convert the motion into one for summary judgment under Rule 12(d).

What happens if a motion to dismiss is granted?

It depends on whether the dismissal is "with prejudice" or "without prejudice" — the single most consequential distinction in the order. The court can also grant the motion in part, dismissing some claims while letting others proceed.

• Dismissed without prejudice. The claim is thrown out, but the plaintiff may fix the defect and try again — typically by filing an amended complaint or refiling. Courts often dismiss without prejudice and grant "leave to amend" when the problem looks curable, such as a complaint that is merely too thin under Twombly/Iqbal.
• Dismissed with prejudice. A final judgment on that claim. The plaintiff cannot refile the same claim against the same defendant. This is common when the defect cannot be cured — for example, the claim is time-barred by the statute of limitations, or amendment would be futile.
• Partial dismissal. If only some counts are dismissed, the case continues on the surviving claims and moves toward discovery.

If the motion is denied, the defendant must then file an answer (usually within 14 days in federal court) and the case proceeds. A dismissal with prejudice is generally appealable as a final order; a denial usually is not.

How do state court motions to dismiss differ from federal?

The federal Rule 12(b) framework and the Twombly/Iqbal plausibility standard apply only in federal court. State courts have their own procedural rules, their own grounds, sometimes a different name for the motion, and — importantly — many have NOT adopted the plausibility standard. Never assume the federal rule numbers carry over.

• Different rule numbers and names. New York uses CPLR 3211 for a "motion to dismiss"; California uses a "demurrer" (Code of Civil Procedure §430.10) for the failure-to-state-a-claim challenge, plus separate motions to quash and to strike. The federal 12(b) numbering does not exist in most state systems.
• Different pleading standard. Twombly and Iqbal interpret the Federal Rules. Some states adopted the plausibility standard; many kept a more lenient "notice pleading" or fact-pleading standard that pre-dates Twombly. The bar for surviving dismissal can be meaningfully lower in state court.
• Different deadlines and procedures. Response times, page limits, meet-and-confer duties, and whether leave to amend is granted freely all vary state to state.

Because of this variance, the single most important step is to identify the exact court and pull that court's rules. A motion drafted for federal court can be procedurally wrong in state court.

What are the most common mistakes with a motion to dismiss?

Most self-represented and even experienced filers lose motions on procedure, not substance. Five recurring errors:

• Filing the answer first and waiving defenses. Answer before moving and you permanently lose the personal-jurisdiction, venue, process, and service defenses under Rule 12(h)(1). Raise all available Rule 12 defenses together, up front.
• Arguing the facts instead of the pleading. A motion to dismiss tests whether the complaint states a claim, assuming its facts are true. Attaching declarations and disputing the plaintiff's account is a summary-judgment argument, not a motion-to-dismiss argument, and can convert the motion under Rule 12(d).
• Ignoring local rules and judge's standing orders. Missing a page limit, skipping a required meet-and-confer, or omitting a memorandum of law gets motions struck before the merits are read.
• Using the wrong standard for the court. Citing Twombly/Iqbal in a state that never adopted it, or vice versa, signals the motion was drafted for the wrong forum.
• Asking for the wrong relief. Requesting dismissal "with prejudice" on a curable defect invites the court to simply grant leave to amend, wasting the motion.