A motion to set aside a dismissal asks the court to cancel its earlier order dismissing your case so the lawsuit can continue from where it stopped. In federal court, the request is governed by Rule 60(b) of the Federal Rules of Civil Procedure, which lists the specific grounds a judge will accept.1Legal Information Institute. Federal Rules of Civil Procedure Rule 60 – Relief from a Judgment or Order State courts use similar frameworks, with their own deadlines and procedures. Before you draft anything, work out one thing first: was your case dismissed with prejudice or without it? That answer decides whether this motion is your best path or whether refiling a new case is faster.
Should You File This Motion At All?
A dismissal “without prejudice” leaves the door open. You can usually refile the same claim as a new lawsuit, as long as the statute of limitations has not run. If the dismissal was for a fixable procedural reason, starting fresh is often simpler than persuading a judge to reopen the old case.
A dismissal “with prejudice” is final. It bars the same claim from being brought again, and a Rule 60(b) motion is likely your only way back into court. The burden is heavier because you are asking the judge to undo what the court treated as a conclusive resolution.
Watch for the trap in involuntary dismissals. When a court dismisses because you failed to prosecute, missed deadlines, or ignored court rules, that dismissal counts as a judgment on the merits unless the order says otherwise. The exceptions are dismissals for lack of jurisdiction, improper venue, or failure to join a required party.2Legal Information Institute. Federal Rules of Civil Procedure Rule 41 – Dismissal of Actions If your order is silent, assume it carries prejudice and plan around that.
One more thing to check before refiling instead: in federal court, if you have already voluntarily dismissed the same claim once before in any court, a second voluntary dismissal operates as a judgment on the merits and bars the claim for good.2Legal Information Institute. Federal Rules of Civil Procedure Rule 41 – Dismissal of Actions
Grounds the Court Will Accept
Courts do not reopen cases because you wish they would. You have to point to a recognized ground. Rule 60(b) lists six, and most state rules track them closely.1Legal Information Institute. Federal Rules of Civil Procedure Rule 60 – Relief from a Judgment or Order Pick the one that fits your facts and commit to it. Scattering arguments across multiple grounds reads as weakness.
Mistake, inadvertence, or excusable neglect. This is the ground most people use. It covers missed deadlines or responses lost to a clerical error, a sudden medical emergency, or another reasonable oversight. Judges weigh factors like the risk of harm to the other side, the length of the delay, whether you acted in good faith, and how much control you had over the situation. A hospitalization that stopped you from answering is the kind of thing courts accept. Being too busy to remember a deadline usually is not.
Newly discovered evidence. If you have found evidence that was not available before the dismissal and that could change the outcome, you can seek relief. The question is whether you could have found it earlier with reasonable effort. If yes, this ground will fail.
Fraud or misconduct by the opposing party. If the other side hid evidence, submitted false information, or otherwise deceived the court in a way that led to the dismissal, you can ask the judge to undo it. You need concrete proof, not suspicion.
Void judgment. A judgment is void when the court lacked authority to enter it. The most common example is a defendant who was never properly served, so the court had no personal jurisdiction. A void judgment can be challenged outside the usual time limits, though the motion still has to be filed within a reasonable time.
The judgment has been satisfied or is no longer equitable. This covers judgments that have already been paid or discharged, judgments based on an earlier ruling that has since been reversed, and judgments whose continued enforcement would no longer be fair.
Any other reason that justifies relief. Rule 60(b)(6) is a catch-all, but the bar is high: truly extraordinary circumstances that do not fit any of the five specific grounds. Treat it as a last resort, not a backup for weak claims under the others.
How Long You Have to File
Every Rule 60(b) motion must be filed within a “reasonable time.” For the first three grounds — mistake or excusable neglect, newly discovered evidence, and fraud — there is also a hard outer limit of one year from the date the judgment or order was entered.1Legal Information Institute. Federal Rules of Civil Procedure Rule 60 – Relief from a Judgment or Order
That one-year cap is an outer boundary, not a target. A judge can still deny your motion as untimely if you waited eight months with no good reason, even though you came in under the year. “Reasonable time” is measured by how long you waited, why, and whether the delay hurt the other party.
For the remaining three grounds, there is no fixed deadline, but the reasonable-time rule still applies. State deadlines vary, and some are shorter than the federal one-year cap. Check the rules for the court where your case was dismissed before you count on any particular window.
Showing the Case Is Worth Reopening
Most courts will not reopen a dismissed case unless you can show you actually have a viable claim or defense. This is often called the meritorious-claim or meritorious-defense requirement, and it reflects a practical point: there is no reason to undo a dismissal just to watch the case fail again on the merits a month later.
You do not need to prove you will win. You do need enough factual detail in your motion to make the judge believe the outcome would plausibly be different if the case moved forward. A sentence saying you “have a good case” will not carry the motion. Attach supporting documents, affidavits from people with firsthand knowledge, or other concrete evidence that gives the court a reason to take another look.
What Goes in the Motion
The motion is the document that carries your entire argument. Include:
- The full case name, case number, and court.
- A copy of the dismissal order you want set aside, with the date it was entered.
- The specific legal ground you are relying on.
- A factual account of what happened and why the dismissal should be reversed. If you are claiming excusable neglect, explain exactly what prevented you from meeting the deadline. If you are alleging fraud, describe the specific misconduct.
- Supporting evidence: medical records for an illness, the newly discovered evidence itself, proof of the opposing party’s misconduct, or witness affidavits.
- An explanation of your underlying claim and why it has a reasonable chance of success if the case is reopened.
Some courts publish templates for these motions. Even where they do not, local rules usually set formatting requirements such as page limits, font size, and margins. A substantively strong motion can still be rejected on arrival if it violates local formatting, so read those rules before you write.
Filing, Serving, and the Hearing
File the complete packet with the court clerk. Most courts accept filings in person, by mail, or through an electronic system; many federal courts require electronic filing for represented parties. Filing fees for motions inside an existing case are generally modest and vary by court.
After filing, serve copies of the motion and every attachment on all other parties. Certified mail with return receipt or personal delivery through a process server is the reliable route. Then file a proof of service with the court. Without that confirmation, the court will not act on your motion.
The court will typically set a hearing. Be ready to walk the judge through your evidence and show how it fits the ground you chose. The other side will push back on the delay, the strength of your underlying case, or the harm they would suffer if the case resumed. If the judge grants the motion, the dismissal is vacated and the case picks up where it stopped. The court can attach conditions, such as ordering you to cover attorney fees the other side incurred because of the delay, or setting a tight schedule to make up for lost time. Rule 60(b) allows relief “on just terms,” which gives judges wide room to impose those conditions.1Legal Information Institute. Federal Rules of Civil Procedure Rule 60 – Relief from a Judgment or Order
If the Judge Denies the Motion
A denial is itself appealable. The appellate court reviews for abuse of discretion, which is a difficult standard: the appeals court will overturn only if the trial judge made a clear error in reasoning. Disagreeing with the outcome is not enough.
If the original dismissal was without prejudice and the statute of limitations is still open, refiling as a new case may remain an option even after your motion is denied. Remember the two-dismissal rule if you are in federal court and have voluntarily dismissed this claim once before. The court may also require you to pay costs from the earlier case before the new one can move.2Legal Information Institute. Federal Rules of Civil Procedure Rule 41 – Dismissal of Actions
Given the tight deadlines and the way a single procedural misstep can close the door for good, talking to an attorney before filing is worth serious consideration. The wrong ground, a missed cutoff, or a thin showing on the merits can end the case permanently.