RulesofCivilProcedure.com Civil Procedure · Every State

Rule 1.1502.Temporary; when allowed

Division XV: Injunctions · Last amended February 15, 2002 · Last verified July 15, 2026

In one sentenceRule 1.1502 allows a temporary injunction when an affidavit-supported petition shows the plaintiff faces great or irreparable injury from an act the plaintiff seeks to restrain, when a party during litigation is violating or threatening to violate the other party's rights in a way that would make the judgment ineffectual, or in any case specially authorized by statute.

Full Text of Rule 1.1502

Text sizeJump to: (1) (2) (3)

A temporary injunction may be allowed under any of the following circumstances:
(1) When the petition, supported by affidavit, shows the plaintiff is entitled to relief which includes restraining the commission or continuance of some act which would greatly or irreparably injure the plaintiff.
(2) Where, during the litigation, it appears that a party is doing, procuring or suffering to be done, or threatens or is about to do, an act violating the other party's right respecting the subject of the action and tending to make the judgment ineffectual.
(3) In any case specially authorized by statute.

Plain-English Summary

Rule 1.1502 lists the three circumstances where a temporary injunction — the earlier-stage, provisional relief rule 1.1501 describes — may be allowed. The first covers the plaintiff's own petition: when the petition, supported by affidavit, shows the plaintiff is entitled to relief that includes restraining the commission or continuance of some act which would greatly or irreparably injure the plaintiff, a temporary injunction can issue to prevent that harm while the case proceeds.

The second circumstance looks at conduct that emerges during the litigation itself, rather than at the outset. If it appears that a party is doing, procuring, or suffering to be done, or threatens or is about to do, an act that violates the other party's rights respecting the subject of the action and tends to make the eventual judgment ineffectual, a temporary injunction can stop that conduct before it undermines whatever the case ultimately decides. The third circumstance is a catch-all: any case specially authorized by statute, where a specific statutory provision independently permits a temporary injunction outside these two general grounds.

Frequently Asked Questions

What do I need to show to get a temporary injunction based on my own petition?

Rule 1.1502(1) requires the petition, supported by affidavit, to show you're entitled to relief that includes restraining the commission or continuance of an act that would greatly or irreparably injure you.

Can I get a temporary injunction based on something the other side started doing after the case was already filed?

Yes. Rule 1.1502(2) allows a temporary injunction where, during the litigation, it appears a party is doing, procuring, or suffering to be done, or threatens or is about to do, an act violating the other party's rights respecting the subject of the action and tending to make the judgment ineffectual.

Does a temporary injunction always require this kind of irreparable-injury showing?

Not always. Rule 1.1502(3) allows a temporary injunction in any case specially authorized by statute, independent of the irreparable-injury or judgment-ineffectual grounds in the first two provisions.

Do I need an affidavit to support a request for a temporary injunction under this rule?

Rule 1.1502(1) specifically requires the petition to be supported by affidavit when relying on the irreparable-injury ground.

What does it mean for an act to “make the judgment ineffectual” under Rule 1.1502(2)?

It refers to conduct that would undermine or defeat the purpose of whatever judgment the court eventually enters on the merits, which is why the rule allows a temporary injunction to stop it while the case is still pending.

Source & verification. Rule text and the Comment are reproduced verbatim from the Iowa Rules of Civil Procedure, adopted by the Iowa Supreme Court. Last verified July 15, 2026. · Official source
Also known as: iowa temporary injunction requirementsirreparable injury injunction iowarule 1.1502 iowa civil procedureaffidavit temporary injunction iowawhen is temporary injunction allowed iowa