Ohio injunctions: the order does nothing until the bond is posted
Ohio procedure · Last verified August 17, 2026
An Ohio injunction is not a court order that happens to require a bond. It is a court order that does not operate until the bond exists. That single word changes how the first forty-eight hours of an injunction case work.
Inoperative until secured
Civ.R. 65(C):
No temporary restraining order or preliminary injunction is operative until the party obtaining it gives a bond executed by sufficient surety, approved by the clerk of the court granting the order or injunction, in an amount fixed by the court or judge allowing it, to secure to the party enjoined the damages he may sustain, if it is finally decided that the order or injunction should not have been granted.
Four requirements, each of which can hold the order up: a bond, executed by sufficient surety, approved by the clerk, in an amount fixed by the court.
A party who leaves the courthouse with a signed order and no approved bond has nothing operative. Anyone advising the enjoined party should check the docket for the bond before advising compliance — and anyone who obtained the order should treat clerk approval as the last step of the application, not an administrative afterthought.
The rule offers an alternative to a surety: the party obtaining the order "may deposit, in lieu of such bond, with the clerk of the court granting the order or injunction," cash or the equivalent the rule allows. Where a surety is hard to arrange quickly, that is usually the faster route.
The enjoined party can demand more — and vacate if it does not come
Civ.R. 65(C) continues:
Before judgment, upon reasonable notice to the party who obtained an injunction, a party enjoined may move the court for additional security. If the original security is found to be insufficient, the court may vacate the injunction unless, in reasonable time, sufficient security is provided.
This is the provision to reach for when an injunction has been in place a while and the damage has grown past what the original bond covers. Two features:
The remedy is escalating, not compensatory. You are not asking for money now; you are asking the court to require more security, with vacation of the injunction as the consequence if it is not provided.
It runs "before judgment," so it is available throughout the case, and more than once as circumstances change.
Enforcement against the surety is streamlined: the surety's liability, and the liability of the party who obtained the order, "may be enforced by the court without jury on motion" — no separate action, no jury trial on the undertaking.
The usual exemption applies: "No security shall be required of this state or political subdivision, or agency of either, or of any officer thereof acting in his representative capacity."
Notice for a preliminary injunction
Civ.R. 65(B)(1) is short: "No preliminary injunction shall be issued without reasonable notice to the adverse party." A preliminary injunction is never an ex parte instrument in Ohio; only the temporary restraining order can be.
Extensions have to be explained
Where a temporary restraining order is extended, Civ.R. 65(A) requires the court to say why: "The reasons for the extension shall be set forth in the order of extension."
That is worth knowing from both sides. A party opposing an extension should ask what the stated reasons are; a party seeking one should supply them rather than leaving the court to compose them.
Serving an ex parte order
Civ.R. 65(E) sends an order granted without notice through formal process: "Restraining orders which are granted ex parte shall be served in the manner provided" for service of process under the rules — not by ordinary service on counsel, because at that point there may be no counsel to serve.
What the order itself must say
Civ.R. 65(D) sets out both the drafting requirements and the reach:
Every order granting an injunction and every restraining order shall set forth the reasons for its issuance; shall be specific in terms; shall describe in reasonable detail, and not by reference to the complaint or other document, the act or acts sought to be restrained; and is binding upon the parties to the action, their officers, agents, servants, employees, attorneys and those persons in active concert or participation with them who receive actual notice of the order whether by personal service or otherwise.
Ohio's version is worth comparing with its neighbors': several states say an order "is binding only upon" the listed persons. Ohio omits the "only," but the effect for practical purposes is the same list — parties, their people, and those in active concert who receive actual notice.
The affidavit has to say what it rests on
Ohio keeps a sentence about the supporting papers that the restyled federal rule dropped:
The verification of such affidavit or verified complaint shall be upon the affiant's own knowledge, information or belief; and so far as upon information and belief, shall state that he believes this information to be true.
An affidavit may rest on information and belief — but it has to say which parts do, and add that the affiant believes the information to be true. On a without-notice application the court has nothing but those papers, so the line between firsthand knowledge and secondhand report is the only calibration available.
Maine and Vermont carry the same sentence.
Evidence from the injunction hearing carries into the trial
Rule 65(B)(2):
Even when this consolidation is not ordered, any evidence received upon an application for a preliminary injunction which would be admissible upon the trial on the merits becomes part of the record on the trial and need not be repeated upon the trial. This subdivision (B)(2) shall be so construed and applied as to save to the parties any rights they may have to trial by jury.
Whatever is admissible and received at the preliminary injunction hearing is in the trial record already. It does not have to be offered again, and it cannot be quietly left out.
The jury savings clause is the limit: consolidating the trial with the hearing, or carrying evidence across, cannot be used to take a case away from a jury that is entitled to hear it.
Practically, this raises the stakes of an early hearing that parties often treat as provisional. Prepare the witnesses as trial witnesses, because that is what the transcript will be.
A short checklist
Obtaining one:
- Get the bond approved by the clerk before you rely on the order. Until then it is not operative.
- Consider a deposit in lieu of a surety bond if speed matters.
- Expect to justify any extension in the order itself.
- Serve an ex parte restraining order like process, not like an ordinary filing.
- Give reasonable notice for a preliminary injunction; there is no ex parte route to one.
- Check whether you are exempt — the State, political subdivisions, their agencies and officers are.
If you are enjoined:
- Check the docket for the bond. No approved security, no operative order.
- Move for additional security if the original amount no longer covers your exposure.
- Ask for vacation as the alternative if sufficient security is not provided in reasonable time.
- Enforce against the surety by motion — no independent action or jury is needed.
Where these rules live
- Ohio Civ.R. 65 — Injunctions
- Ohio Civ.R. 4 — Process
- Ohio Civ.R. 6 — Time
- Responding to an Ohio complaint
- Ohio motion to dismiss
- Ohio subpoenas
This page explains what the rules say. It isn't legal advice, and the substantive showing required for injunctive relief is developed in case law this site doesn't cover.