A court order that stops an activity is called an injunction. It’s a directive from a judge telling a person, business, or government body to cease a specific action, and sometimes to take one. Courts issue injunctions when they conclude that waiting for a full trial would cause harm no amount of money could fix afterward.
The Three Forms an Injunction Can Take
Injunctions match the stage of the lawsuit they come from, and each form lasts a different length of time.
Temporary Restraining Order
A temporary restraining order, or TRO, is the fastest option. It freezes a situation in place when the harm is so urgent that even waiting for a hearing could cause permanent damage. Under Federal Rule of Civil Procedure 65, a judge can issue a TRO without giving the other side any advance notice, but only if two conditions are met: the person requesting it files a sworn statement showing immediate and irreparable harm will occur before the other side can respond, and their attorney certifies in writing what efforts were made to give notice and why notice should not be required.1Legal Information Institute. Federal Rules of Civil Procedure Rule 65 – Injunctions and Restraining Orders
A TRO issued without notice expires no later than 14 days after it is entered, though a court can extend it for another 14 days if the requesting party shows good cause.1Legal Information Institute. Federal Rules of Civil Procedure Rule 65 – Injunctions and Restraining Orders The short clock exists because the other side had no chance to argue against the order. The TRO is a placeholder meant to hold things steady until a proper hearing can happen.
Preliminary Injunction
A preliminary injunction picks up where a TRO leaves off. It can last for the duration of the lawsuit rather than just a couple of weeks. The key difference is that a judge can only grant one after both sides have had a chance to present evidence and argue their positions at a hearing.1Legal Information Institute. Federal Rules of Civil Procedure Rule 65 – Injunctions and Restraining Orders Because both parties are heard, the order carries more weight and can remain in effect for months or even years while the underlying case works its way to trial.
Permanent Injunction
A permanent injunction is issued at the end of a case, after a full trial. It is part of the final judgment and has no built-in expiration. The Supreme Court has held that a plaintiff seeking a permanent injunction must show harm that cannot be undone, that money damages alone are not enough, that the balance of hardships favors the plaintiff over the defendant, and that the order would not harm the public interest.2Justia. eBay Inc. v. MercExchange, L.L.C., 547 U.S. 388 (2006) Despite the name, a permanent injunction can still be modified later if circumstances change significantly.
Orders That Stop Action and Orders That Require It
Most injunctions are prohibitory. They tell someone to stop doing something: a factory to stop dumping waste, a former employee to stop contacting clients from an old job. These orders preserve the status quo.
A mandatory injunction works in the opposite direction. It orders someone to take a specific action, such as tearing down a structure that encroaches on a neighbor’s property or restoring a diverted water source. Courts treat mandatory injunctions more cautiously because they require active effort from the restrained party rather than simply standing still. Judges generally wait until after a full trial to issue one rather than granting it on a preliminary basis.
When Courts Issue Injunctions
Injunctions turn up in a wide range of disputes, but a few categories come up repeatedly.
- Property and nuisance disputes. A court might halt construction that crosses a property line, shut down a business creating excessive noise or pollution, or order the removal of a structure blocking a shared easement.
- Intellectual property. Businesses seek injunctions to stop competitors from using their trademarks, selling counterfeit products, or infringing copyrights. Speed matters because every day the infringement continues can erode brand value in ways that are difficult to quantify in dollars.
- Employment and contract disputes. An employer can ask for an injunction to prevent a former employee from working for a direct competitor or soliciting clients in violation of a signed non-compete agreement.
- Harassment and domestic violence. Protective orders are a specialized form of injunction. They can prohibit contact, require a person to stay a specified distance away, or bar someone from a shared residence. They are available in cases involving domestic violence, stalking, sexual assault, and workplace threats.
- Environmental harm. When a business or individual is causing ongoing pollution or environmental damage, an injunction can order the activity stopped immediately rather than allowing the harm to continue while damages are calculated.
What You Have to Prove
Getting an injunction isn’t automatic. Courts apply a four-part test, and failing on any single factor can sink the request.
- Irreparable harm. You must show that without the court’s intervention, you will suffer an injury that money cannot adequately repair after the fact. Loss of a unique property right, ongoing health damage, or destruction of evidence are classic examples. If a dollar figure could make you whole later, most judges will tell you to wait for trial.
- Likelihood of success. You need to convince the judge that you are likely to win your underlying lawsuit. You don’t have to prove your entire case at the hearing, but you need enough evidence to show your claims are more than speculative.
- Balance of hardships. The court weighs your potential harm against the burden the injunction would impose on the other side. If stopping the defendant’s activity would cost them far more than letting it continue would cost you, the balance tips against granting the order.
- Public interest. The judge considers whether the injunction serves the broader public good. An order that protects a community’s water supply has a public interest tailwind; one that shuts down a hospital over a billing dispute does not.2Justia. eBay Inc. v. MercExchange, L.L.C., 547 U.S. 388 (2006)
How the Process Works
The process starts with filing a motion for a preliminary injunction, or a TRO in emergencies, with the court clerk. The motion lays out the facts of the case and explains why you meet the four-factor test. Along with it, you typically submit sworn statements, documentary evidence, and a proposed order for the judge to sign.
After filing, you must arrange for the legal papers to be formally delivered to the opposing party. This step, called service of process, ensures the other side knows about the lawsuit and the upcoming hearing. The only exception is an emergency TRO request, where the court can act before the other side is notified if you demonstrate that the delay would cause irreparable harm.1Legal Information Institute. Federal Rules of Civil Procedure Rule 65 – Injunctions and Restraining Orders
At the hearing, both sides present evidence and arguments. The judge then decides whether the legal standard has been met. Injunction hearings tend to be faster and less formal than full trials, but they’re still adversarial proceedings where the quality of your evidence matters. Vague claims of harm or speculation about what the other side might do rarely persuade a judge to issue an extraordinary order.
The Security Bond
If the court grants the request, you may be required to post a security bond before the injunction takes effect. Under Rule 65(c), the bond covers any costs and damages the other party suffers if the injunction later turns out to have been wrongly issued.1Legal Information Institute. Federal Rules of Civil Procedure Rule 65 – Injunctions and Restraining Orders The judge sets the amount based on the potential financial impact on the restrained party. Bond amounts in commercial disputes can be substantial, and you generally cannot get the injunction enforced until the bond is posted. If the injunction is later dissolved or the restrained party wins at trial, their recovery for wrongful restraint is typically limited to the face amount of the bond.
What Happens If Someone Violates an Injunction
Ignoring a court-ordered injunction is one of the faster ways to end up in serious legal trouble. Federal courts have the power to punish disobedience of any lawful court order by fine, imprisonment, or both.3Office of the Law Revision Counsel. 18 U.S. Code 401 – Power of Court State courts have similar authority under their own contempt statutes.
Contempt comes in two forms. Civil contempt is coercive. The court imposes a penalty designed to force compliance, such as daily fines that accumulate until you obey the order, or jail time that lasts until you agree to comply. Criminal contempt is punitive. It punishes the violation itself rather than trying to compel future behavior, and it can result in fixed fines and jail sentences.
Beyond contempt sanctions, the court can order the violator to compensate the other party for damages caused by the breach. If a company continues selling counterfeit goods after being enjoined, for instance, it could owe the plaintiff every dollar of profit earned during the violation period on top of whatever fines the judge imposes.
Modifying, Dissolving, or Appealing an Injunction
An injunction isn’t necessarily final, even one labeled permanent. If circumstances change significantly after the order is issued, either party can file a motion asking the court to modify or dissolve it. Under Federal Rule of Civil Procedure 60(b)(5), a court can grant relief from a judgment or order when applying it going forward is no longer fair, such as when the underlying facts have shifted or the law has changed.4Legal Information Institute. Federal Rules of Civil Procedure Rule 60 – Relief From a Judgment or Order The party seeking the change bears the burden of showing that the new circumstances justify it.
Appeals follow a different path than most civil cases. Normally, you cannot appeal a court’s decision until the entire case is over. Injunctions are an exception. Federal law allows an immediate appeal of any order that grants, denies, modifies, or dissolves an injunction, without waiting for a final judgment.5Office of the Law Revision Counsel. 28 U.S. Code 1292 – Interlocutory Decisions The reason is practical: if a preliminary injunction shuts down a business for two years while the lawsuit plays out, waiting until after trial to challenge it would defeat the purpose of an appeal.
Filing an appeal does not automatically pause the injunction. The order remains in force unless you separately ask the appellate court for a stay, and getting one requires showing many of the same factors that applied to the original injunction request. For anyone subject to an injunction they believe was wrongly issued, acting quickly on the appeal matters more than most people realize.