Getting Injunctive Relief Under Rule 65: Mechanics, Standards, and Traps

Getting injunctive relief in federal court is one of the harder things you’ll do as a litigator. Not because the standard is mysterious, but because most lawyers underestimate how much work goes into a winning motion before they file it. This post walks through the mechanics of Rule 65, the four-factor test courts actually apply, and the procedural tripwires that can sink an otherwise solid motion.

The Four-Factor Test: What Courts Are Really Weighing

Rule 65 doesn’t spell out the substantive standard for granting a TRO or preliminary injunction. That comes from case law. The Supreme Court’s framework from Winter v. Natural Resources Defense Council, 555 U.S. 7 (2008) requires you to show: (1) likelihood of success on the merits, (2) likelihood of irreparable harm in the absence of relief, (3) that the balance of equities tips in your favor, and (4) that an injunction is in the public interest.

Winter displaced the old sliding-scale approach that some circuits used, under which a mere possibility of irreparable harm could suffice in certain cases. After Winter, all four factors are requirements, not a pure balancing act — and irreparable harm must be likely, not merely possible.

That said, a modified sliding scale survives in several circuits. The Ninth Circuit, in Alliance for the Wild Rockies v. Cottrell, 632 F.3d 1127 (9th Cir. 2011), held that its “serious questions” approach remains viable after Winter — but only when applied as part of the full four-element Winter test. Under that formulation, serious questions going to the merits combined with a hardship balance that tips sharply in the movant’s favor can support an injunction, provided the movant also demonstrates likelihood of irreparable harm and that the injunction serves the public interest. The Second and Seventh Circuits have reached similar conclusions. The Fourth and Tenth Circuits have rejected the sliding scale entirely. The circuit split remains unresolved, so know your forum before you brief this issue.

Irreparable harm is where most motions live or die. Courts are skeptical of conclusory declarations that say, in effect, “we’ll suffer harm.” You need specific evidence. If you’re seeking to protect a trade secret, get a declaration from someone who can explain the actual competitive impact of disclosure, not just a boilerplate statement that the secret is valuable. Loss of goodwill, loss of customer relationships, and constitutional violations have generally been recognized as irreparable; monetary damages that are easily calculated generally have not.

Ex Parte TROs: When You Can Go Without Notice

Rule 65(b)(1) sets out what you need to get a TRO without notice to the other side:

The court may issue a temporary restraining order without written or oral notice to the adverse party or its attorney only if:

(A) specific facts in an affidavit or a verified complaint clearly show that immediate and irreparable injury, loss, or damage will result to the movant before the adverse party can be heard in opposition; and

(B) the movant’s attorney certifies in writing any efforts made to give notice and the reasons why it should not be required.

Courts take both requirements seriously. The “specific facts” requirement means your affidavit needs to explain why you can’t wait even 24 or 48 hours for a hearing. The typical scenarios where ex parte TROs are granted: the defendant is actively destroying evidence, dissipating assets, or would be tipped off and flee the jurisdiction. The classic fraud-and-dissipation case is the strongest posture.

The attorney certification is often treated as a formality, but it isn’t. If you didn’t try to give notice, you need a real reason. “We were afraid the defendant would move the assets” is sometimes sufficient. “We didn’t think about it” is not, and some judges will deny the motion on that basis alone.

One practical note: even in genuine emergencies, consider making a phone call or sending an email to defense counsel before you file. If you document that you gave notice (or tried to), you eliminate one objection and often look more credible to the judge.

The 14-Day Clock and What Happens Next

Every temporary restraining order issued without notice must state the date and hour it was issued; describe the injury and state why it is irreparable; state why the order was issued without notice; and be promptly filed in the clerk’s office and entered in the record. The order expires at the time after entry—not to exceed 14 days—that the court sets, unless before that time the court, for good cause, extends it for a like period or the adverse party consents to a longer extension. The reasons for an extension must be entered in the record.

The 14-day limit is absolute absent good cause or consent. If you get an ex parte TRO and then fail to move promptly on the preliminary injunction, the order dissolves and you’ve burned goodwill with the court. Rule 65(b)(3) requires the preliminary injunction hearing to be set “at the earliest possible time” and provides that it “takes precedence of all matters except older matters of the same character” — an important qualifier that means another emergency injunction proceeding already on the docket goes first. Use that priority. Call chambers the day you get the TRO and ask when the hearing can be scheduled.

The adverse party has real teeth too: under Rule 65(b)(4), they can move to dissolve or modify on just two days’ notice. If the defendant is sophisticated and well-counseled, expect a dissolution motion. Have your response ready before they file it.

Bond: Don’t Lowball It (Or Ignore It Entirely)

The court may issue a preliminary injunction or a temporary restraining order only if the movant gives security in an amount that the court considers proper to pay the costs and damages sustained by any party found to have been wrongfully enjoined or restrained. The United States, its officers, and its agencies are not required to give security.

Courts have broad discretion over the bond amount, including discretion to set it at zero, particularly where the risk of harm to the restrained party is speculative or where requiring a significant bond would effectively deny access to a meritorious plaintiff. But if the bond is set at a real number and you fail to post it, the injunction won’t issue. Think through this before you file: what are the realistic damages to the other side if they are wrongfully enjoined, and can your client cover a bond at that level?

The other side of this: if you’re opposing an injunction, push hard on the bond amount. A high bond can effectively deter a plaintiff who lacks the resources to post it, and it’s a legitimate argument that courts consider.

The Specificity Requirement: Where Orders Get Challenged

Rule 65(d)(1) requires that every injunction and restraining order describe the restrained or required acts “in reasonable detail” and not by reference to the complaint or other documents. The rule applies equally to prohibitory injunctions (orders to stop doing something) and mandatory injunctions (orders to do something). This is where sloppy drafting comes back to hurt you. An order that says “defendant is enjoined from engaging in unfair competition as alleged in the complaint” is facially defective. You need to describe the specific conduct.

Get this right in your proposed order because courts typically adopt the movant’s language. If your proposed order is vague, the judge may narrow it, deny it pending revision, or issue something that’s unenforceable when you actually try to hold the defendant in contempt.

The Mistake That Kills Otherwise Good Motions

The most common error: treating the preliminary injunction motion as a preview of the merits brief. It isn’t. Judges reading these motions want to know why you need relief now, what specific harm occurs without it, and why money damages won’t fix it. A 40-page brief on the underlying contract dispute, with three pages on irreparable harm, is going to lose. Lead with the emergency. Put your strongest irreparable-harm evidence front and center, and make the merits analysis tight and targeted.

If you’re in a district with a local rule requiring a separate memorandum or limiting page length on emergency motions, check it before you file. Some districts also require you to notify the clerk’s office before filing an emergency motion so a duty judge can be assigned. Missing that step can delay your TRO by a full day, which in genuine emergencies matters.

For more on the discovery issues that often run alongside injunction proceedings, see Rule 26 and Rule 65.1 on security procedures.