Introduction

Every lawsuit takes time, and some kinds of harm cannot wait for a judgment. If the thing the suit is about — a secret, a structure, a fund of money — can be destroyed while the case is pending, the eventual winner may find that winning has become pointless. Equity's answer is interlocutory relief: an order entered before final adjudication that holds the parties in place so the court's ultimate judgment still has something to operate on. In federal court, Rule 65 governs the two devices that supply this relief, the preliminary injunction and the temporary restraining order¹. Both restrain a defendant who has been found liable of nothing, so the Rule surrounds them with procedural safeguards, and those safeguards — notice, hearings, time limits, security, and specificity — are the part of the doctrine that a civil procedure exam most often tests.

This chapter follows the sequence a court would follow. It begins with what interlocutory relief is for and why the law tolerates restraint before liability. It then works through the procedure for obtaining a preliminary injunction, the stricter machinery that governs a restraining order issued without notice, the security the movant must post, and finally the requirements of form and scope that attach to every injunctive order, however it was obtained.

The Purpose of Interlocutory Relief

Interlocutory relief exists because a final judgment repairs only what still exists to be repaired. The two devices Rule 65 supplies — the preliminary injunction and the temporary restraining order, or TRO — are equitable orders directing a party to act or to refrain from acting while the case is pending². Their office is to preserve the status quo, meaning the last peaceable, uncontested position of the parties, until the court can decide the merits. In University of Texas v. Camenisch the Supreme Court described the purpose of a preliminary injunction as merely preserving the relative positions of the parties until a trial on the merits can be held, and it drew the procedural consequence directly from that limited purpose: because haste is often necessary, preliminary relief is customarily granted on procedures less formal, and evidence less complete, than a trial would require. The Fourth Circuit invoked the same formulation in Gloucester County School Board v. G.G., and courts continue to describe the office of these orders in exactly those terms.

The gate that separates the cases that qualify from those that do not is irreparable harm — injury that a damages judgment at the end of the case cannot repair. A plaintiff whose competitor is about to publish its trade secret can obtain interlocutory relief, because publication destroys secrecy permanently and no later award of money restores it. A plaintiff who alleges only that the defendant will owe money at the end of the case ordinarily cannot, because the eventual judgment fully repairs the loss, and equity has no reason to restrain anyone in the meantime. The single fact that moves the answer is whether the harm is reversible: reversible losses wait for trial, while irreversible ones justify intervention before it.

The two devices divide the work by time. A TRO is the emergency measure: it is sought at the very outset of a case, it may in narrow circumstances issue without notice to the adverse party, and it lasts days rather than months, holding the parties in place only long enough for a preliminary-injunction hearing to be convened³. A preliminary injunction requires notice and an adversarial hearing, and once entered it can remain in force until the trial itself — sometimes for years⁴. The duration difference explains the procedural difference: the longer an order will govern the parties, the more complete the process the Rule demands before it issues, while the briefest orders may issue on the thinnest process precisely because they expire so quickly.

One point of orientation prevents a common confusion. The familiar four-factor test — likelihood of success on the merits, likelihood of irreparable harm, the balance of equities, and the public interest — appears nowhere in the text of Rule 65. That standard is judge-made, inherited from traditional equity practice, and courts have read it into the Rule because the Rule itself addresses only procedure: who must receive notice, how long an order may last, what the order must say, and who must post security⁵. This chapter concentrates on that procedural machinery, because it is the part the Rule actually commands.

The safeguards are best understood as a system before they are examined one by one. A defendant restrained before judgment has been ordered to change conduct without any finding of liability, an inversion of the adversary system's ordinary sequence. The law tolerates the inversion only because delay can destroy the very thing the suit is about, so interlocutory relief deliberately trades some accuracy for speed. Every procedural requirement in Rule 65 prices that trade. The TRO issued without notice, the shortest and most one-sided procedure, carries the tightest limits on duration and the most demanding threshold showing; the preliminary injunction, which may last until trial, may issue only after the fullest adversarial process short of trial itself. Reading each requirement as the price of the shortcut it accompanies makes the whole Rule coherent.

The Preliminary Injunction

Rule 65(a) governs the preliminary injunction, and it does so entirely through procedure: it says nothing about when an injunction is warranted, only about what must happen before one issues⁶. Three requirements do that work, and each guards against a different failure. Notice and a hearing ensure that the order rests on evidence both sides have tested; consolidation manages the relationship between the preliminary hearing and the eventual trial; and the findings requirement, imported from Rule 52, makes the decision reviewable. The subsections that follow take them in turn.

Notice and Hearing

Rule 65(a)(1) states the rule in a single absolute sentence: a court may issue a preliminary injunction "only on notice to the adverse party"⁷. The courts have uniformly read that sentence to require more than a mailed warning — the adverse party must also receive a hearing, though one considerably less formal than a trial. Evidence may come in by affidavit, testimony may be abbreviated, and the judge retains discretion over how much live proof to take⁸. Where the material facts are sharply disputed, however, the courts of appeals treat an evidentiary hearing as a practical necessity; in Aoude v. Mobil Oil Corp. the First Circuit described an evidentiary hearing as a highly desirable prelude to interlocutory relief whenever the facts are contested, and in SEC v. Frank the Second Circuit located the whole question in the tension between the need for speed and the demand for fairness that runs through Rule 65.

The notice requirement earns its absolute phrasing from two directions. Functionally, a preliminary injunction can govern the parties until trial, and an order of that duration should rest on evidence both sides have had a chance to test, since an unchallenged affidavit is the least reliable foundation for long-term restraint. Structurally, notice is the line that separates the preliminary injunction from the TRO, and courts police that line by looking at the substance of an order rather than its caption. In Sampson v. Murray a district court continued a temporary restraining order indefinitely, and the Supreme Court treated the order as a preliminary injunction subject to Rule 65's full requirements, because an order unlimited in time is a preliminary injunction whatever the judge chose to call it. The Third Circuit made the converse point in Hope v. Warden York County Prison: the notice requirement is precisely what distinguishes the non-appealable TRO from the appealable preliminary injunction, so the label on the order matters far less than whether the adverse party was heard.

The contrast between compliance and evasion turns on a single fact. A court that gives notice, hears the parties on affidavits and brief testimony, and then enjoins the defendant pending trial has satisfied Rule 65(a)(1), even though the evidence was thinner than a trial record would be⁹. Suppose instead that a judge enters an order without notice restraining a defendant with no stated end date. However the order is labeled, it cannot stand as a preliminary injunction, because the adverse party never received notice; courts treat it as a TRO and subject it to the fourteen-day limit discussed below. The fact that moves the outcome is notice, and only notice.

Consolidation with Trial

Because the preliminary hearing and the trial often canvass the same witnesses and documents, Rule 65(a)(2) lets the court avoid doing the work twice. Before or after the hearing begins, the court may advance the trial on the merits and consolidate it with the preliminary-injunction hearing; and even without consolidation, evidence received on the motion that would be admissible at trial becomes part of the trial record and need not be repeated¹⁰. The provision serves simple economy — repeating a full evidentiary presentation wastes the parties' resources and the court's — but it comes with two built-in limits. The court must preserve any party's right to a jury trial, and the parties must have clear notice that consolidation is occurring, because consolidation converts a provisional proceeding into a final one¹¹.

The notice limit follows from what Camenisch held about the evidentiary character of the preliminary stage. Because a party is never required to prove its whole case at a preliminary-injunction hearing, the findings of fact and conclusions of law made in granting or denying preliminary relief bind no one at the trial on the merits. A litigant who prepared only the abbreviated showing the preliminary stage requires would be ambushed if the court silently treated that showing as the party's entire case. So the two situations come out differently on a single fact — whether the parties knew the hearing would be their trial. Where both sides agree that the injunction hearing will present the entire dispute, as the parties did in Almetals, Inc. v. Wickeder Westfalenstahl when they consented to consolidation conditioned on completed service, the court may consolidate and enter final judgment on that record. Where no consolidation was ordered or noticed, the preliminary findings remain provisional, and either party may relitigate every issue at trial.

Required Findings and Conclusions

The third requirement comes from Rule 52 rather than Rule 65. When a court tries a case without a jury, Rule 52(a)(1) obliges it to find the facts specially and state its conclusions of law separately¹², and Rule 52(a)(2) extends the same duty to interlocutory injunctions: in granting or refusing one, the court must state the findings and conclusions that support its action¹³. The extension is deliberate rather than routine. Rule 52(a)(3) excuses courts from stating findings when ruling on ordinary motions¹⁴, so the interlocutory injunction is singled out, and the reason is appellate review: a ruling granting or refusing an interlocutory injunction can be taken up immediately, and a court of appeals cannot review a discretionary, fact-laden decision without knowing which facts the district court found and why. The findings requirement also disciplines the trial judge's own decision, and it tells the enjoined party exactly what conduct and evidence justified the restraint — information that matters later, when changed circumstances support a motion to modify or dissolve the order.

In practice the requirement is often satisfied by the opinion itself. District courts routinely close a preliminary-injunction ruling by designating the opinion as the findings and conclusions Rule 52(a) requires — the pattern in Joyce Beverages of New York v. Royal Crown Cola, Servomation Mathias, Inc. v. Englert, and Pantry Pride, Inc. v. Rooney, each of which resolved a preliminary-injunction motion in a reasoned opinion and stated that the opinion constituted the required findings¹⁵. A reasoned opinion so designated complies fully. An order granting an injunction in a single unexplained sentence does not, and the usual consequence is a remand, because the appellate court has no findings to review under the clearly-erroneous standard.

The Temporary Restraining Order

A TRO bridges the gap between the filing of the case and the earliest possible preliminary-injunction hearing. When the movant gives notice and the adverse party appears, a TRO raises no special difficulty — it is simply a very short injunction issued on a very fast schedule. The distinctive machinery of Rule 65(b) exists for the other situation: the order issued without notice, which is the sharpest departure from adversarial process the civil rules permit¹⁶. Every subsection of Rule 65(b) works to keep that departure as narrow and as brief as possible, and the three subsections below trace how — first the conditions for issuing without notice, then the mandatory contents and automatic expiration of such an order, and finally the devices that let the restrained party fight back.

Issuing Without Notice

Rule 65(b)(1) authorizes what no other provision of the civil rules allows: an order binding a party who has received no notice at all. Such ex parte orders — orders obtained by one side without the other's participation — may issue only if two conditions are both met¹⁷. First, specific facts in an affidavit or a verified complaint must clearly show that immediate and irreparable injury, loss, or damage will result to the movant before the adverse party can be heard in opposition¹⁸. Second, the movant's attorney must certify in writing any efforts made to give notice and the reasons why notice should not be required¹⁹. The conditions are conjunctive; a movant who satisfies one but not the other gets nothing.

Each prong answers a different danger of one-sided process. The sworn-specificity requirement guards reliability: with no adversary present to test the story, the court must at least have a detailed account under oath rather than counsel's characterization of the facts, which is why the rule demands specific facts that clearly show the injury rather than allegations that merely assert it²⁰. Buried in the same clause is a timing element that students routinely miss: the injury must be one that will occur before the adverse party can be heard, which confines the ex parte shortcut to cases where even a rushed noticed hearing would come too late. Harm that is irreparable in the long run, but would not occur within the next few days, does not qualify. The certification requirement does subtler work — it removes the movant's temptation to skip notice for tactical advantage. A lawyer who must swear to the efforts made to reach the opponent, or explain why none should be required, cannot quietly choose surprise over process. Together the two prongs make ex parte relief a matter of demonstrated necessity, never of convenience, which is the balance between speed and fairness that SEC v. Frank identified in the design of Rule 65(b).

The showing succeeds where notice itself would trigger the harm. A verified complaint demonstrating that the defendant will empty a bank account or destroy records the moment it learns of the suit supports an ex parte TRO, because a noticed hearing would arrive after the damage was done²¹. Contrast In re Kunstler, where the plaintiffs requested a TRO in their complaint while conceding that they could not yet make the Rule 65(b) showing and would need discovery first — the precise opposite of an immediate, clearly shown injury, and a request the rule cannot support. For a properly issued order, Crocker v. Tennessee Secondary School Athletic Association shows the device working as designed: the court issued a TRO in accordance with Rule 65(b) to preserve a student's athletic eligibility until the dispute could be heard.

Contents and Expiration

An order that issued with no adversary present must document itself, and Rule 65(b)(2) prescribes exactly how. Every TRO 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 record²². These content requirements create a record where the adversarial process created none: the paper itself preserves when the order took effect (the expiration clock runs from that hour), what harm justified it, and why notice was dispensed with, so that the restrained party and a reviewing court can test the order after the fact.

The same subsection sets the order's lifespan, and this is the Rule's most strictly enforced limit. The order expires at the time the court sets, which may not exceed fourteen days after entry, unless before that time the court, for good cause, extends it for a like period, or the adverse party consents to a longer extension — and the reasons for any extension must be entered in the record²³. Expiration is automatic and self-executing; the order dies of its own terms without any motion from the restrained party. That design enforces the bargain that made ex parte relief tolerable in the first place: restraint without a hearing is permitted only because it is fleeting, and putting the burden of continuing the restraint on the party who obtained it places the incentive to move quickly where it belongs. In NutraSweet v. Vit-Mar Enterprises the Third Circuit emphasized that these time limits are strictly applied, and in Sims v. Greene the same court found error where a district judge extended a TRO without entering the reasons of record, treating the recorded-reasons requirement as mandatory rather than decorative.

The consequence of overstaying follows from the notice section above. An order that runs past the limit, or that is unlimited in time, is treated as a preliminary injunction — and it then fails immediately, because a preliminary injunction may issue only on notice, and by hypothesis none was given²⁴. That is what happened in Sampson v. Murray, where the indefinitely continued "TRO" was measured against preliminary-injunction requirements it could not meet, and in Connell v. Dulien Steel Products, where a restraining order scheduled to run at least twenty-eight days — far beyond the ten-day limit the rule then imposed, before amendment set the current fourteen — received the same treatment²⁵. By contrast, an ex parte TRO that states its date and hour, describes the irreparable injury, explains the absence of notice, and expires within fourteen days complies with Rule 65(b)(2) and remains fully enforceable for its term²⁶.

Protections for the Restrained Party

Two further provisions restore, as quickly as possible and from either direction, the adversarial hearing the ex parte procedure skipped. Under Rule 65(b)(3), when a TRO issues without notice the motion for a preliminary injunction must be set for hearing at the earliest possible time, taking precedence over all other matters except older matters of the same character; at that hearing the party who obtained the order must proceed with the motion, and if the party does not, the court must dissolve the order²⁷. Under Rule 65(b)(4), the restrained party need not wait for that hearing: on two days' notice to the party who obtained the order — or shorter notice if the court sets it — the adverse party may appear and move to dissolve or modify the order, and the court must then hear and decide the motion as promptly as justice requires²⁸.

The two provisions guard against different abuses. The expedited-hearing rule prevents a movant from banking the restraint and then dragging out the proceedings: a movant who obtains an ex parte TRO and then seeks repeated continuances of the preliminary-injunction hearing forfeits the order, because the rule conditions the restraint on the movant's diligence in defending it in an adversarial setting²⁹. The motion-to-dissolve rule gives the restrained party a way to force the confrontation itself rather than waiting out the fourteen days, which matters when even a few days of restraint are costly. In Granny Goose Foods, Inc. v. Teamsters the Supreme Court confirmed the allocation of burdens: Rule 65(b) never places on the restrained party the burden of coming forward to justify lifting the order, and the mere opportunity to move to dissolve does not substitute for the movant's obligation to carry its own motion. A defendant restrained ex parte on a Monday can therefore move to dissolve on two days' notice and be heard that same week.

The Security Requirement

Interlocutory relief is granted on a prediction, and Rule 65(c) prices the possibility that the prediction is wrong. The court may issue a preliminary injunction or a TRO only if the movant gives security in an amount 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 exempt³⁰. A party is wrongfully enjoined when it was restrained without sufficient legal basis — the test is whether the movant ultimately loses on the merits, and if so, the restrained party may recover its provable losses against the bond regardless of the movant's good faith in seeking the order³¹.

The requirement exists because the court itself cannot compensate the error. If the movant loses at trial, the defendant will have been restrained — sometimes for years — by an order that should never have issued, and no damages action lies against the court that issued it. The security shifts the risk of the erroneous prediction onto the party who asked for the prediction to be made. The requirement also works on incentives before any error occurs: a movant who must put money behind the request will weigh the application more carefully, which checks the temptation to use a cheap emergency filing as a litigation weapon. The federal exemption reflects a different judgment about solvency — the United States can always answer for damages, so prepaying them adds nothing³².

Three operational points follow. First, the bond is a ceiling as well as a fund: the wrongfully restrained party recovers only losses it actually proves, and only up to the bond's amount, which is why courts advise district judges to err on the high side when setting security, since a generous bond entitles the restrained party to nothing it cannot prove — the reasoning adopted in DeVos v. Cunningham Group, where a $25,000 bond was held inadequate to protect two enjoined physicians whose potential losses far exceeded it. The bond's protective function ran the other way in American Hospital Supply Corp. v. Hospital Products, where a $5 million bond, together with the movant's own resources, adequately protected the enjoined manufacturer and helped sustain the injunction on appeal. Second, the mandatory phrasing has teeth: in Hoxworth v. Blinder, Robinson & Co. the Third Circuit reversed a preliminary injunction issued with no bond at all, rejecting the district court's view that the requirement could simply be excused³³. Third, despite that phrasing, many courts claim discretion to set a nominal bond, or to excuse security entirely, for indigent plaintiffs or in public-interest litigation where a bond would price the enforcement of important rights out of reach — a live division of authority that remains unresolved. The government, by contrast, never posts security, because the exemption in Rule 65(c) is express³⁴.

Form, Scope, and Persons Bound

The requirements considered so far govern how interlocutory relief is obtained. Rule 65(d) governs something different: what every injunctive order must look like, and whom it reaches, regardless of how it was obtained³⁵. The subdivision applies to preliminary injunctions, TROs, and permanent injunctions alike, and both of its halves respond to the same underlying fact — an injunction is enforced by contempt, so both the order's commands and its audience must be knowable in advance. The contents rules make the commands knowable; the persons-bound rules define the audience.

Required Contents

Rule 65(d)(1) imposes three requirements on every order granting an injunction and every restraining order: the order must (A) state the reasons why it issued, (B) state its terms specifically, and (C) describe in reasonable detail — and not by referring to the complaint or other document — the act or acts restrained or required³⁶. Each part has its own logic. The reasons requirement mirrors Rule 52's findings duty and serves the same masters — appellate review and later modification, both of which need to know why the order exists³⁷. The specificity and reasonable-detail requirements serve fair notice, and the analogy is to criminal law: violation of an injunction is punishable by contempt, and a person cannot be jailed or fined for disobeying a command that person could not understand. A decree ordering a defendant to "stop infringing" or to "obey the law" would leave the defendant guessing, at every step, whether the next act is contempt, so the rule forbids drafting at that level of generality³⁸.

The no-incorporation rule in clause (C) closes the workaround. Without it, a court could satisfy specificity on paper by ordering the defendant to refrain from the acts described in the complaint — but the defendant would then have to parse an adversary's pleading, a document drafted to accuse rather than to instruct, to learn what is forbidden. The rule therefore requires that the enjoined party be able to learn its obligations from the four corners of the order itself³⁹. The matched pair makes the line concrete. An order restraining a defendant from contacting three named customers about two identified product lines states its terms specifically and will support contempt if violated⁴⁰. Suppose instead an order enjoins a defendant "from the conduct alleged in Count II of the complaint": that order violates the bar on describing the restrained acts by reference to another document, and a contempt citation built on it will not stand⁴¹. The difference lies entirely in whether the forbidden conduct is described in the order or merely pointed at.

Persons Bound

Rule 65(d)(2) answers the final question: whom does the order bind? It binds only the following persons, and only if they receive actual notice of the order by personal service or otherwise: (A) the parties; (B) the parties' officers, agents, servants, employees, and attorneys; and (C) other persons who are in active concert or participation with anyone described in (A) or (B)⁴². The structure contains two independent conditions. A person must fall within one of the three categories, and that person must also have actual notice of the order; neither alone suffices. The actual-notice condition supplies the contempt predicate — a person cannot be punished for defying an order that person never knew existed, so knowledge of the order, however acquired, is what makes the restraint personally operative⁴³.

The categories balance two structural principles that pull in opposite directions. Due process forbids binding strangers to litigation they never joined, so the list stops at parties, those who act for parties, and those who knowingly help parties evade — a true stranger acting independently is beyond the injunction's reach and must be sued separately. At the same time, equity would be helpless if a defendant could nullify a decree simply by acting through others, so clause (C) sweeps in confederates: active concert or participation is the anti-evasion category, ensuring that a defendant cannot comply in name while an ally carries out the forbidden act⁴⁴. Interlocutory orders carry this reach with full force — during its effective period, a preliminary injunction or TRO binds the defendant's agents and confederates just as a permanent decree would⁴⁵.

A matched pair fixes the boundary. A defendant's warehouse manager who reads the injunction and ships the prohibited goods anyway is bound and in contempt: he is an employee within clause (B), and reading the order gave him actual notice⁴⁶. An independent competitor who happens to sell the same product is bound by nothing, even if she knows about the injunction, because she is neither a party, nor an agent of one, nor in active concert with one — knowledge without a qualifying relationship does not bring a person within the order⁴⁷. The two actors perform the same act with the same knowledge; the only fact that differs is the relationship to the enjoined party, and that fact alone decides the contempt question.