An opposition to a motion to dismiss is the document you file to persuade the court that your lawsuit should move forward. The defendant’s motion argues your case has a fatal legal or procedural defect; your opposition explains, ground by ground, why it does not. Get it right and the case proceeds to discovery. Get it wrong, or miss the deadline, and the case can end before it truly begins.
The Standard the Court Will Apply
On a motion to dismiss for failure to state a claim, the court accepts every factual allegation in your complaint as true and draws all reasonable inferences in your favor. Your job in the opposition is to show that those facts, taken together, make the defendant’s liability plausible.
That plausibility threshold comes from two Supreme Court decisions. In Bell Atlantic Corp. v. Twombly (2007), the Court held that a complaint must contain enough factual allegations to state a claim that is plausible on its face, replacing the older “no set of facts” test. In Ashcroft v. Iqbal (2009), the Court clarified that plausibility means pleading factual content that allows a reasonable inference the defendant is liable. Bare legal conclusions and formulaic recitations of a cause of action’s elements will not satisfy the standard.
Most state courts apply some version of this framework, with local variations. Your central task in drafting is to connect the facts in your complaint to every element of your legal claims, showing the court that the inference of liability is reasonable rather than speculative.
Which Grounds You Have to Answer
The defendant’s motion will invoke one or more of the seven grounds listed in Federal Rule of Civil Procedure 12(b).1Legal Information Institute. Federal Rules of Civil Procedure Rule 12 Identify every ground raised, because skipping one in your opposition can be treated as a concession.
- Lack of subject-matter jurisdiction under 12(b)(1): the court lacks authority over this type of case.
- Lack of personal jurisdiction under 12(b)(2): the defendant lacks sufficient connection to the state where you filed.
- Improper venue under 12(b)(3): the case was filed in the wrong district.
- Insufficient process under 12(b)(4): the summons or complaint is legally defective in form.
- Insufficient service of process under 12(b)(5): the defendant was not properly served.
- Failure to state a claim under 12(b)(6): the most common ground, arguing the complaint does not allege facts sufficient to support a viable claim.
- Failure to join a required party under 12(b)(7): someone who must be in the case has been left out.
A single motion often combines several of these grounds. Each one needs its own section in your opposition and its own legal analysis.
Structure of the Document
Open with a caption containing the court’s name, the full case title, and the case number. Rule 10(a) requires this on every filing.2Legal Information Institute. Federal Rules of Civil Procedure Rule 10 Title the document clearly, such as “Plaintiff’s Opposition to Defendant’s Motion to Dismiss.”
A short introduction follows, usually one to three paragraphs. Name the claims at issue, identify the defendant’s main arguments, and state plainly that the complaint meets the applicable standard. Do not bury the point.
The body contains the statement of facts and the legal arguments. Close with a conclusion that explicitly asks the court to deny the motion in whole. If you want alternative relief like leave to amend, state it here.
Every opposition must be signed. Under Rule 11, your signature certifies that the arguments have a basis in law and fact, that factual assertions have evidentiary support, and that the filing is not submitted for an improper purpose such as delay or harassment.3Legal Information Institute. Federal Rules of Civil Procedure Rule 11 When you file electronically, the electronic filing system generally constitutes service on all parties and no separate certificate of service is required. If you serve by other means, file a certificate of service specifying the date and method of delivery.4Legal Information Institute. Federal Rules of Civil Procedure Rule 5 – Serving and Filing Pleadings and Other Papers
Font, margins, page limits, and line spacing are governed by local rules, which vary by district, and sometimes by the assigned judge’s standing orders. Check both before finalizing. Noncompliance can lead to your filing being rejected or stricken.
Writing the Statement of Facts
The statement of facts is not the place to introduce new evidence. It retells the facts already in your complaint, selected to highlight the allegations that satisfy each element of your claims.
Walk the court through the key actions, dates, and communications that establish liability. If your complaint alleges breach of contract, trace the agreement, the defendant’s specific failure, and the resulting harm in chronological order. Cite the paragraph numbers of the complaint for every fact you reference. This makes it easy for the judge to verify your allegations and directly counters any suggestion that the complaint lacks factual support.
Keep argument out of this section. Let the facts read like a clean narrative; save legal conclusions for the argument that follows.
Point-by-Point Legal Argument
Mirror the structure of the defendant’s motion. Use headings that correspond to each ground the defendant raised, and respond to every one.
Subject-Matter Jurisdiction
If the defendant challenges subject-matter jurisdiction, identify the specific statutory basis for the court’s authority. In federal court, this usually means federal question jurisdiction (claims arising under federal law) or diversity jurisdiction (parties from different states, amount in controversy over $75,000). Cite the statute and show how your case satisfies its requirements.
Personal Jurisdiction
A personal jurisdiction defense says the defendant lacks sufficient connection to the forum state. Your opposition must show minimum contacts. The Supreme Court distinguishes specific jurisdiction, which requires the defendant to have purposefully directed activities at the forum state and your claims to arise from those activities, from general jurisdiction, which applies when contacts are so extensive the court can hear any claim against the defendant regardless of where events occurred.5Constitution Annotated. Amdt14.S1.7.1.4 Minimum Contact Requirements for Personal Jurisdiction
Failure to State a Claim
This is where the plausibility standard does its work and where most oppositions are won or lost. Walk through each element of every challenged cause of action and show that the complaint’s factual allegations, accepted as true, satisfy that element. State the element, identify the specific complaint paragraphs that address it, and explain why those facts make the defendant’s liability plausible rather than merely possible.
Cite binding case law supporting your legal theory. If courts in your jurisdiction have denied motions to dismiss on similar facts, highlight those decisions. The degree of specificity the court expects depends on the complexity of the claim; a straightforward breach-of-contract case requires less granular pleading than an antitrust conspiracy.
Statute of Limitations
Defendants sometimes argue too much time has passed. The statute of limitations is technically an affirmative defense, and the defendant bears the burden of showing it applies. Your opposition can dispute when the cause of action accrued, invoke the discovery rule because you could not have known about the injury until later, or argue tolling doctrines that paused the clock. If the complaint’s own allegations do not show the claim is time-barred on its face, the motion should fail, because the court would need evidence beyond the pleadings to resolve the question.
When the Defendant Attaches Outside Evidence
Sometimes a motion to dismiss comes with documents, declarations, or other materials that go beyond the complaint. Under Rule 12(d), if the court considers that outside material rather than excluding it, the motion must be converted into a motion for summary judgment under Rule 56, and all parties must be given a reasonable opportunity to present their own evidence.1Legal Information Institute. Federal Rules of Civil Procedure Rule 12
That matters for your strategy. If the defendant attached materials not part of or referenced in your complaint, ask the court either to exclude those materials and decide the motion on the pleadings alone, or to convert the motion to summary judgment and give you time to conduct discovery and submit your own evidence. Flag the issue in your opposition so you are not blindsided by a ruling based on one-sided evidence.
One exception matters here. Documents your complaint specifically references and that are central to your claims can be considered on a 12(b)(6) motion without triggering conversion. Rule 10(c) treats an exhibit attached to a pleading as part of the pleading itself,2Legal Information Institute. Federal Rules of Civil Procedure Rule 10 and courts have extended that principle to documents incorporated by reference. A court can also take judicial notice of certain facts not subject to reasonable dispute, such as public records and government filings, under Federal Rule of Evidence 201.6Legal Information Institute (LII). Rule 201. Judicial Notice of Adjudicative Facts If you need the court to consider a public record, request judicial notice in your opposition.
Request Leave to Amend as a Fallback
Even if you think your complaint is solid, request leave to amend as alternative relief. If the court finds a deficiency, having the request on the record gives you a chance to fix the problem instead of losing outright.
Under Rule 15(a)(1)(B), when the defendant files a motion to dismiss under Rule 12(b), you can amend your complaint once as a matter of course within 21 days after the motion is served, no permission needed.7Legal Information Institute. Rule 15. Amended and Supplemental Pleadings After that window closes, you need the defendant’s written consent or leave of court. Courts should freely grant leave when justice requires.
The distinction between dismissal with and without prejudice makes this request valuable. A dismissal with prejudice is a final judgment on the merits; the case is over. A dismissal without prejudice lets you refile, but in federal court the statute of limitations is treated as if the original case was never filed, so the clock may have run out. A standing request for leave to amend keeps the case alive in its current posture.
Filing Deadlines and Submission
Missing the deadline can be fatal. The Federal Rules do not set a specific deadline for filing an opposition to a motion to dismiss. Rule 6(c)(1) requires a motion to be served at least 14 days before a hearing, and local rules in each district set the response deadline.8Legal Information Institute. Rule 6. Computing and Extending Time; Time for Motion Papers In most federal districts the window is roughly 14 to 21 days from service of the motion, but the exact timeframe depends on your court’s local rules or the judge’s scheduling order. Check both the moment you receive the motion.
Represented parties in federal court must file electronically unless the court allows an exception.4Legal Information Institute. Federal Rules of Civil Procedure Rule 5 – Serving and Filing Pleadings and Other Papers Pro se litigants may be permitted to file on paper, depending on the district. Confirm every exhibit referenced in your opposition is attached and labeled before you submit; a missing exhibit can undermine the argument it was meant to support.
If you cannot meet the deadline, file a motion for an extension of time before it expires. Courts are much more receptive to extension requests filed in advance than to explanations offered after the fact.
What Happens If You Do Not Respond
Failing to file an opposition does not automatically mean you lose, but it is a dangerous position. The defendant still bears the burden of showing the complaint should be dismissed, and most courts will evaluate the motion’s legal sufficiency on its merits. In practice, though, unopposed motions to dismiss are granted far more often than contested ones. The judge has no counter-arguments to weigh and no competing case law to consider. Some local rules state that failure to oppose may be treated as consent to the relief requested.
Courts apply a somewhat more lenient standard to pro se litigants, construing their filings liberally. That leniency applies to how the complaint is read; it does not excuse a failure to respond to a motion. If you want your case to survive, file the opposition.
Sample Opposition Template
The template below illustrates the structure described above. Replace the bracketed placeholders with your case information. This is a simplified model; your district’s local rules may require additional sections or different formatting.
[CAPTION]
UNITED STATES DISTRICT COURT
[DISTRICT NAME]
[YOUR NAME],
Plaintiff,
v.
[DEFENDANT’S NAME],
Defendant.
Case No. [XX-XXXX]
PLAINTIFF’S OPPOSITION TO DEFENDANT’S MOTION TO DISMISS
[INTRODUCTION]
Plaintiff [Your Name] respectfully opposes Defendant’s Motion to Dismiss [ECF No. XX]. The Complaint states plausible claims for [identify claims, e.g., breach of contract and fraud] supported by detailed factual allegations. As set forth below, Defendant’s arguments mischaracterize the legal standard and ignore the well-pleaded facts that establish each element of Plaintiff’s causes of action. The Court should deny the Motion in its entirety.
[STATEMENT OF FACTS]
On [date], Plaintiff and Defendant entered into [describe the agreement or relationship]. (Compl. ¶ 10.) [Continue narrating the key facts, citing complaint paragraph numbers.] Defendant then [describe the wrongful conduct]. (Compl. ¶¶ 15-18.) As a direct result, Plaintiff suffered [describe harm]. (Compl. ¶ 22.)
[LEGAL STANDARD]
A motion to dismiss under Rule 12(b)(6) should be denied where the complaint contains factual allegations sufficient to state a claim for relief that is plausible on its face. Bell Atl. Corp. v. Twombly, 550 U.S. 544, 570 (2007). The Court must accept all well-pleaded factual allegations as true and draw all reasonable inferences in the plaintiff’s favor. Ashcroft v. Iqbal, 556 U.S. 662, 678 (2009).
[ARGUMENT]
I. THE COMPLAINT STATES A PLAUSIBLE CLAIM FOR [FIRST CAUSE OF ACTION]
To state a claim for [cause of action], a plaintiff must allege: (1) [first element]; (2) [second element]; and (3) [third element]. [Citation to governing law.] The Complaint satisfies each element.
[Walk through each element, pointing to specific complaint paragraphs and citing supporting case law.]
II. THE COMPLAINT STATES A PLAUSIBLE CLAIM FOR [SECOND CAUSE OF ACTION]
[Repeat the element-by-element analysis for each additional claim.]
III. IN THE ALTERNATIVE, PLAINTIFF REQUESTS LEAVE TO AMEND
Should the Court find any deficiency in the Complaint, Plaintiff respectfully requests leave to amend pursuant to Federal Rule of Civil Procedure 15(a)(2). Leave to amend should be freely given when justice so requires. [Citation.]
[CONCLUSION]
For the foregoing reasons, Plaintiff respectfully requests that the Court deny Defendant’s Motion to Dismiss in its entirety, or in the alternative, grant Plaintiff leave to amend.
Dated: [Date]
Respectfully submitted,
[Your Signature]
[Your Printed Name]
[Address]
[Phone Number]
[Email Address]
[Bar Number, if applicable]
[CERTIFICATE OF SERVICE — required only if not filing electronically]
I certify that on [date], I served a copy of this Opposition on all counsel of record by [method of service].
[Signature]