A motion to vacate a dismissal asks the court that threw out your case to undo that order and let the case move forward again. In federal court, the authority comes from Rule 60(b), which lets a judge reopen a case for specific reasons like excusable neglect, fraud, newly discovered evidence, or a judgment that was void from the start. State courts generally use a similar framework. Winning one of these motions takes two things: a recognized ground for relief, filed inside a strict deadline, and enough of a case on the merits that reopening it would actually matter.
Before drafting anything, confirm whether your dismissal was with prejudice or without. That single detail changes everything.
With Prejudice or Without Prejudice
A dismissal without prejudice leaves the door open. The current case is over, but you can refile the same claims, often after fixing whatever caused the dismissal. If that’s your situation, you may not need a motion to vacate at all. Refiling is usually faster, as long as the statute of limitations on your claim hasn’t run.
A dismissal with prejudice is a final ruling on the merits. You cannot refile the same claims against the same party. A motion to vacate is your only path back in the trial court, and these motions are harder to win because the court already treated the dismissal as conclusive.
How a dismissal gets categorized depends on who initiated it and why. A plaintiff’s voluntary dismissal early in a case is generally without prejudice, but a second voluntary dismissal of the same claim operates as a final adjudication on the merits. An involuntary dismissal for failure to prosecute or for violating a court order is treated as a ruling on the merits unless the order says otherwise or the dismissal was for lack of jurisdiction, improper venue, or failure to join a required party.1Legal Information Institute. Federal Rules of Civil Procedure Rule 41 – Dismissal of Actions
Grounds That Can Reopen a Case
You cannot vacate a dismissal just because you disagree with it. The motion has to rest on one of the specific grounds the rules recognize. Rule 60(b) lists six, and most state courts follow a similar structure.2Legal Information Institute. Federal Rules of Civil Procedure Rule 60 – Relief from a Judgment or Order
Mistake, Inadvertence, or Excusable Neglect
This is the ground people rely on most often. It covers missed deadlines or hearings caused by calendaring errors, sudden medical emergencies, or other reasonable failures to act. The key word is “excusable.” A court will not reopen your case because you forgot about it or didn’t take the deadline seriously. You need to show that a reasonably careful person could have made the same mistake under the circumstances.
Fraud or Misconduct by the Other Side
If the opposing party hid evidence, lied to the court, or engaged in other dishonest conduct that directly led to the dismissal, that is a basis for vacating it.2Legal Information Institute. Federal Rules of Civil Procedure Rule 60 – Relief from a Judgment or Order The bar is high. You need clear evidence that the misconduct actually caused the dismissal, not just that the other side behaved badly at some point.
Newly Discovered Evidence
A case can be reopened when significant evidence surfaces that was not available before the dismissal. You have to show two things: that reasonable effort would not have turned up the evidence earlier, and that the evidence is important enough that it likely would have changed the outcome.2Legal Information Institute. Federal Rules of Civil Procedure Rule 60 – Relief from a Judgment or Order Courts look closely at whether you were actually diligent. This ground will not help if the evidence was available and you simply didn’t look hard enough.
Void Judgment
A judgment is void if the court that issued it lacked jurisdiction over the case or over the parties. The most common scenario is defective service of process. If you were never properly served with the lawsuit, the court never had authority over you, and any resulting dismissal or default judgment can be challenged as void. Federal rules require that a summons be personally delivered, left at your home with someone of suitable age, or delivered to an authorized agent.3Legal Information Institute. Federal Rules of Civil Procedure Rule 4 – Summons If none of those methods were followed, the judgment may be void regardless of how much time has passed.
Changed Circumstances and the Catch-All
Rule 60(b) also allows relief when a judgment has been satisfied, when it rests on an earlier judgment that was reversed, or when applying it going forward is no longer fair. Beyond that, there is a catch-all provision for “any other reason that justifies relief.”2Legal Information Institute. Federal Rules of Civil Procedure Rule 60 – Relief from a Judgment or Order Courts read it narrowly. It is reserved for extraordinary situations that don’t fit the other categories, not a backup when a stronger ground falls short.
Deadlines You Cannot Miss
Many motions to vacate fail before the judge even considers the merits. Under the federal rules, every Rule 60(b) motion must be filed within a “reasonable time.” What counts as reasonable depends on the circumstances, and courts lose patience quickly when there is no good explanation for delay.
For three specific grounds there is also a hard one-year deadline. Motions based on mistake or excusable neglect, newly discovered evidence, or fraud must be filed no more than one year after the judgment, order, or proceeding.2Legal Information Institute. Federal Rules of Civil Procedure Rule 60 – Relief from a Judgment or Order Miss that window and the court has no discretion to help you on those grounds, no matter how compelling your case is.
Motions based on a void judgment, changed circumstances, or the catch-all have no fixed deadline beyond the reasonable-time requirement. Void judgment challenges can sometimes succeed even years later, because a court that lacked jurisdiction never had the power to act in the first place. Filing sooner is still better. The longer you wait, the harder it becomes to convince a judge your delay was reasonable. State court deadlines vary and are often shorter, so check your local rules.
Showing You Have a Real Case
Even with an airtight excuse for the dismissal, most courts also want to know that reopening the case would actually be worth it. Judges look at whether you have a “meritorious claim” or “meritorious defense,” meaning a legitimate argument that could succeed if the case moves forward. A court is not going to vacate a dismissal only to reach the same result again.
Your motion should explain what the case is about and why you have a reasonable chance of winning. You do not need to prove the whole case at this stage, but you do need enough substance that the court believes the outcome could be different. If you were the plaintiff, explain the legal basis for your claim. If you were the defendant, outline the defense you would have raised. Skipping this step is one of the most common reasons motions to vacate get denied.
What to Put in the Papers
Before drafting, gather your full case name and number, the exact date of the dismissal order, and the specific reason the judge gave. Many courts post blank templates on their websites. The core documents are:
- A motion to vacate dismissal. This is the main document. It identifies the case, states the legal ground you’re relying on, and connects the facts of your situation to that ground. Be specific. A motion that just says “excusable neglect” without explaining what happened will go nowhere.
- A declaration or affidavit. A sworn statement laying out the supporting facts under penalty of perjury. If you missed a hearing because of a medical emergency, this is where you describe what happened in detail.
- Supporting exhibits. The evidence behind your story: hospital records, doctor’s notes, email chains, returned mail showing defective service, or whatever documents back up your ground for relief.
- A proposed order. A pre-drafted order for the judge to sign if the motion is granted.
Filing, Serving, and the Hearing
File everything with the clerk of the court where your case was originally heard. Depending on the court, you can file in person, by mail, or through the electronic filing system. Most federal courts now require e-filing through CM/ECF. Fees vary. If you cannot afford them, you can ask the court to let you proceed “in forma pauperis” by filing an affidavit showing you are unable to pay; federal law authorizes any court to waive prepayment on that basis.4Office of the Law Revision Counsel. 28 USC 1915 – Proceedings In Forma Pauperis
After filing, deliver copies of all your papers to the opposing party or their attorney. In federal court, the motion and hearing notice must be served at least 14 days before the hearing.5Legal Information Institute. Federal Rules of Civil Procedure Rule 6 – Computing and Extending Time; Time for Motion Papers Common methods include certified mail and professional process servers. Then file a proof of service with the court.
The opposing party gets a chance to file a written opposition. Any opposing affidavit must be served at least seven days before the hearing unless the court sets a different schedule.5Legal Information Institute. Federal Rules of Civil Procedure Rule 6 – Computing and Extending Time; Time for Motion Papers State courts set their own response deadlines.
The judge may hold a hearing or decide on the written submissions alone. At a hearing, expect pointed questions about why you didn’t act sooner, what caused the problem that led to dismissal, and what your case looks like on the merits. If the motion is granted, the dismissal is vacated and the case becomes active again, roughly where it left off. If it is denied, the dismissal stands, and your remaining option is to appeal. Appeals courts give trial judges wide discretion on Rule 60(b) rulings, so reversing a denial is an uphill fight.