Rule 58 recognizes preliminary injunction as an interlocutory order issued before final judgment to restrain an act or to require the performance of an act while the main case is pending. Its function is preservative, not adjudicatory; it protects the effective enforcement of the judgment that may later be rendered without deciding the parties' ultimate rights.
The principal kinds are prohibitory preliminary injunction and mandatory preliminary injunction. A temporary restraining order is closely related because it supplies immediate restraint while the application for preliminary injunction is being heard, but it is shorter, more urgent, and more provisional in character.
Prohibitory Preliminary Injunction
A prohibitory preliminary injunction commands a party, court, agency, or person to refrain from doing a particular act. It is the ordinary form of preliminary injunction because it preserves the last actual, peaceable, and uncontested state of things preceding the controversy.
The usual object is to prevent a threatened, continuing, repeated, or renewed act that would probably violate the applicant's right before the case can be finally resolved. It operates prospectively, so it generally does not undo a completed act, although it may restrain the continuing effects of an act when the threatened injury remains current and preventable.
The applicant must show a clear and unmistakable right that needs protection, a material and substantial invasion or threatened invasion of that right, an urgent necessity to prevent serious damage, and the inadequacy of ordinary legal remedies. Mere apprehension, speculative injury, or a disputed claim unsupported by a prima facie showing does not justify restraint.
The phrase status quo does not mean the condition existing at the moment the court acts if that condition was produced by the very act complained of. It refers to the last peaceable and uncontested situation before the dispute arose, because the remedy prevents one side from gaining litigation advantage by changing conditions while the court is still determining the merits.
A prohibitory writ is appropriate when the harm can still be prevented by inaction. It may restrain demolition, foreclosure, dispossession, cancellation, transfer, implementation, disclosure, enforcement, or other conduct that would make the judgment ineffectual or cause injury incapable of adequate compensation.
Because the writ binds conduct before final adjudication, the court must frame it with precision. The enjoined act must be described clearly enough to allow obedience, enforcement, and contempt sanctions without leaving the parties to guess at the scope of the restraint.
Mandatory Preliminary Injunction
A mandatory preliminary injunction commands the performance of a positive act. It compels the respondent to do something, restore something, deliver something, remove an obstruction, reconnect a service, reinstate a condition, or otherwise reverse a disturbance of the protected right.
This kind is more cautiously granted than a prohibitory injunction because it usually changes the apparent condition existing when the court acts. Although often described as disturbing the status quo, its legitimate office is to restore the true status quo when that status was wrongfully altered before the court could intervene.
The applicant's right must be especially clear, the violation must be plainly shown, and the necessity must be urgent. Courts require a stronger showing because an improvident mandatory writ may effectively give the applicant substantial relief before trial and may impose affirmative burdens that are difficult to reverse.
A mandatory writ may issue when the respondent has a definite legal duty to perform and refusal to perform will cause serious or irreparable injury. The duty may arise from law, contract, property relations, official obligation, or another juridical source, but the duty must be sufficiently established at the provisional stage.
The remedy is proper when inaction would permit a continuing wrong to harden into practical victory. For example, a court may compel restoration of possession, reconnection of essential services, removal of a barrier, surrender of documents, reinstatement to a position, or undoing of a recent act when the applicant's right and the respondent's duty are not seriously doubtful.
It is generally improper when the writ would dispose of the main action, create a new relation between the parties, require performance of a highly disputed obligation, or compel acts requiring continuous judicial supervision. It may still be granted despite resemblance to final relief when necessary to preserve the subject matter, prevent irreparable injury, or restore the last peaceable condition.
The distinction between prohibitory and mandatory relief depends on the substance of the command, not on the wording of the order. An order phrased negatively may be mandatory if compliance requires affirmative action, and an order phrased affirmatively may be prohibitory if it merely prevents evasion of the restraint.
Temporary Restraining Order
A temporary restraining order is an urgent, short-term restraint issued to prevent grave injustice and irreparable injury before the application for preliminary injunction can be heard. It is not a substitute for a preliminary injunction because it merely holds matters in place until the court can conduct the required hearing.
Unlike a writ of preliminary injunction, a TRO may initially issue ex parte in extreme urgency. In the regional trial court setting, an ex parte TRO is effective for only seventy-two hours, during which the court must conduct a summary hearing to determine whether the restraint should continue while the injunction application is being heard.
The total effective period of a TRO issued by a trial court cannot exceed twenty days, including the original seventy-two hours. If the application is denied or not resolved within the period, the TRO is automatically vacated without need of a separate order, and the court has no authority to extend or renew it on the same ground.
A TRO issued by the Court of Appeals, or by one of its members, has a longer fixed life under Rule 58, while a TRO issued by the Supreme Court remains effective until further orders. These periods reflect the different institutional roles of trial and appellate courts, but the provisional character of the remedy remains the same.
A TRO is normally prohibitory because its immediate function is to restrain action before notice and hearing can be completed. It should not be used to grant affirmative relief except in the rare situation where immediate restoration is indispensable to prevent the very injury that makes the application urgent.
Comparative Features
| Kind | Direction of Order | Main Function | Required Showing |
|---|---|---|---|
| Prohibitory preliminary injunction | Commands the respondent to refrain from an act | Preserves the last peaceable and uncontested condition | Clear right, threatened or continuing invasion, urgent necessity, and inadequacy of ordinary remedies |
| Mandatory preliminary injunction | Commands the respondent to perform a positive act | Restores the last peaceable condition or prevents a continuing wrong from becoming irreversible | Clearer and stronger showing of right, duty, violation, urgency, and irreparable injury |
| Temporary restraining order | Usually commands temporary inaction before the injunction hearing | Prevents grave and irreparable injury during the brief period needed for notice and hearing | Extreme urgency, grave injustice, and immediate irreparable injury |
Relationship to Permanent Injunction
A permanent injunction is not a kind of preliminary injunction. It is final relief granted after the plaintiff's right has been finally determined, while a preliminary injunction is provisional relief based on a prima facie assessment made before judgment.
The provisional writ should not usurp the office of the final judgment. Its purpose is to keep the controversy capable of meaningful adjudication, not to declare ownership, determine liability, annul acts, or award the ultimate relief except to the extent temporarily necessary to protect the court's eventual judgment.
Bond and Effect
Whether prohibitory or mandatory, a preliminary injunction generally requires the applicant to post a bond. The bond answers for damages that the adverse party may sustain if the court later determines that the injunction was wrongful.
The bond does not cure the absence of a right, the lack of urgency, or the inadequacy of the factual showing. It is a condition for the writ's issuance, not a substitute for the requisites of injunctive relief.
Violation of a valid injunctive order may be punished as contempt because the writ is a command of the court. Conversely, an order issued without jurisdiction, without the required hearing for preliminary injunction, or beyond the lawful period for a TRO may be challenged through the appropriate procedural remedies.
The controlling inquiry is practical and protective: if the threatened injury is prevented by stopping conduct, the remedy is prohibitory; if protection requires restoration or affirmative performance, the remedy is mandatory; if immediate restraint is needed only until the injunction application can be heard, the remedy is a TRO.