An injunction is an
equitable remedy
Equitable remedies are judicial remedies developed by courts of equity from about the time of Henry VIII to provide more flexible responses to changing social conditions than was possible in precedent-based common law.
Equitable remedies were ...
in the form of a special
court order
A court order is an official proclamation by a judge (or panel of judges) that defines the legal relationships between the parties to a hearing, a trial, an appeal or other court proceedings. Such ruling requires or authorizes the carrying o ...
compelling a
party
A party is a gathering of people who have been invited by a Hospitality, host for the purposes of socializing, conversation, recreation, or as part of a festival or other commemoration or celebration of a special occasion. A party will oft ...
to do or refrain from doing certain acts. It was developed by the English
courts of equity
A court of equity, also known as an equity court or chancery court, is a court authorized to apply principles of equity rather than principles of law to cases brought before it. These courts originated from petitions to the Lord Chancellor of E ...
but its origins go back to
Roman law
Roman law is the law, legal system of ancient Rome, including the legal developments spanning over a thousand years of jurisprudence, from the Twelve Tables (), to the (AD 529) ordered by Eastern Roman emperor Justinian I.
Roman law also den ...
and the equitable remedy of the "interdict".
"When a
court
A court is an institution, often a government entity, with the authority to adjudicate legal disputes between Party (law), parties and Administration of justice, administer justice in Civil law (common law), civil, Criminal law, criminal, an ...
employs the extraordinary remedy of injunction, it directs the conduct of a party, and does so with the backing of its
full coercive powers."
['' Nken v. Holder'']
556 U.S. 418
, 428 (2009) (citation and internal quotation marks omitted). A party that fails to comply with an injunction faces criminal or
civil penalties
A civil penalty or civil fine is a financial penalty imposed by a government agency as restitution for wrongdoing. The wrongdoing is typically defined by a Codification (law), codification of legislation, regulations, and decrees. The civil fine ...
, including possible
monetary
Money is any item or verifiable record that is generally accepted as payment for goods and services and repayment of debts, such as taxes, in a particular country or socio-economic context. The primary functions which distinguish money are: med ...
sanctions and even
imprisonment
Imprisonment or incarceration is the restraint of a person's liberty for any cause whatsoever, whether by authority of the government, or by a person acting without such authority. In the latter case it is considered " false imprisonment". Impri ...
. They can also be charged with
contempt of court
Contempt of court, often referred to simply as "contempt", is the crime of being disobedient to or disrespectful toward a court of law and its officers in the form of behavior that opposes or defies the authority, justice, and dignity of the co ...
.
Rationale
The injunction is an equitable remedy that was created by the English
courts of equity
A court of equity, also known as an equity court or chancery court, is a court authorized to apply principles of equity rather than principles of law to cases brought before it. These courts originated from petitions to the Lord Chancellor of E ...
. Like other equitable remedies, it has traditionally been given when a wrong cannot be effectively remedied by an award of money damages. (The doctrine that reflects this is the requirement that an injunction can be given only when there is "no adequate remedy at law.") Injunctions are intended to make whole again someone whose rights have been violated. Nevertheless, when deciding whether to grant an injunction, courts also take into account the interests of non-parties (that is, the public interest). When deciding whether to give an injunction, and deciding what its scope should be, courts give special attention to questions of fairness and good faith. One manifestation of this is that injunctions are subject to equitable defenses, such as
laches and
unclean hands.
Injunctions are given in many different kinds of cases. They can prohibit future violations of the law, such as trespass to real property, infringement of a patent, or the violation of a constitutional right (e.g., the free exercise of religion). Or they can require the defendant to repair past violations of the law.
An injunction can require someone to do something, like clean up an oil spill or remove a
spite fence
In property law, a spite fence is an overly tall fence or a row of trees, bushes, or hedges, constructed or planted between adjacent lots by a property owner (with no legitimate purpose), who is annoyed with or wishes to annoy a neighbor, or who ...
. Or it can prohibit someone from doing something, like using an illegally obtained trade secret. An injunction that requires conduct is called a "mandatory injunction." An injunction that prohibits conduct is called a "prohibitory injunction."
Many injunctions are both—that is, they have both mandatory and prohibitory components, because they require some conduct and forbid other conduct.
When an injunction is given, it can be enforced with equitable enforcement mechanisms such as contempt. It can also be modified or dissolved (upon a proper motion to the court) if circumstances change in the future.
These features of the injunction allow a court granting one to manage the behavior of the parties. That is the most important distinction between the injunction and another non-monetary remedy in American law, the
declaratory judgment
A declaratory judgment, also called a declaration, is the legal determination of a court that resolves legal uncertainty for the litigants. It is a form of legally binding preventive by which a party involved in an actual or possible legal ma ...
.
Another way these two remedies are distinguished is that the declaratory judgment is sometimes available at an earlier point in a dispute than the injunction.
Worldwide
Australia
In the state of
New South Wales
New South Wales (commonly abbreviated as NSW) is a States and territories of Australia, state on the Eastern states of Australia, east coast of :Australia. It borders Queensland to the north, Victoria (state), Victoria to the south, and South ...
, a court may grant an apprehended violence order (AVO) to a person who fears violence, harassment, abuse, or
stalking
Stalking is unwanted and/or repeated surveillance or contact by an individual or group toward another person. Stalking behaviors are interrelated to harassment and intimidation and may include following the victim in person or monitorin ...
. The order prohibits the defendant from assaulting, harassing, threatening, stalking, or intimidating the person seeking the order. Other conditions may be included, such as a prohibition against contacting the person or attempting to find the person online. A court may issue the order if it believes a person has reasonable grounds for their fears or has no reasonable grounds for their fears. Non-compliance may result in the imposition of a fine, imprisonment, or both, and deportation.
Turkey
Interim injunctions are a provisional form of injunctive relief, which can compel a party to do something (mandatory injunction) or stop it from doing something (prohibitory injunction).
A plaintiff seeking an
interim injunction must establish that he is likely to succeed on the merits, that he is likely to suffer severe harm in the absence of preliminary relief, and that an injunction is in the public interest.
In Turkish law,
interim injunction is an extraordinary remedy that is never awarded as of right. In each case, courts balance the competing claims of injury and consider the likely hardship on the defendant.
United States
History
Injunctions have been especially important at two moments in American history.
First, in the late nineteenth and early twentieth century, federal courts used injunctions to break strikes by unions. For example, after the
United States government
The Federal Government of the United States of America (U.S. federal government or U.S. government) is the Federation#Federal governments, national government of the United States.
The U.S. federal government is composed of three distinct ...
successfully used an injunction to outlaw the
Pullman boycott in 1894 in ''
In re Debs
''In re Debs'', 158 U.S. 564 (1895), was a labor law case of the United States Supreme Court, which upheld a contempt of court conviction against Eugene V. Debs. Debs had the American Railway Union continue its 1894 Pullman Strike in violatio ...
'', employers found that they could obtain
federal court injunctions to ban strikes and organizing activities of all kinds by
unions. These injunctions were often extremely broad; one injunction issued by a federal court in the 1920s effectively barred the
United Mine Workers of America
The United Mine Workers of America (UMW or UMWA) is a North American labor union best known for representing coal miners. Today, the Union also represents health care workers, truck drivers, manufacturing workers and public employees in the Unit ...
from talking to workers who had signed
yellow dog contracts with their employers. Unable to limit what they called "government by injunction" in the courts, labor and its allies persuaded the
United States Congress
The United States Congress is the legislature, legislative branch of the federal government of the United States. It is a Bicameralism, bicameral legislature, including a Lower house, lower body, the United States House of Representatives, ...
in 1932 to pass the
Norris-LaGuardia Act, which imposed so many procedural and substantive limits on the federal courts' power to issue injunctions that it effectively prohibited federal court from issuing injunctions in cases arising out of labor disputes. A number of states followed suit and enacted "Little Norris-LaGuardia Acts" that imposed similar limitations on state courts' powers. The courts have since recognized a limited exception to the Norris-LaGuardia Act's strict limitations in those cases in which a party seeks injunctive relief to enforce the
grievance
A grievance () is a wrong or hardship suffered, real or supposed, which forms legitimate grounds of complaint. In the past, the word meant the infliction or cause of hardship.
See also
* Complaint system
* Harm
Harm is a morality, moral and ...
arbitration
Arbitration is a formal method of dispute resolution involving a third party neutral who makes a binding decision. The third party neutral (the 'arbitrator', 'arbiter' or 'arbitral tribunal') renders the decision in the form of an 'arbitrati ...
provisions of a
collective bargaining
Collective bargaining is a process of negotiation between employers and a group of employees aimed at agreements to regulate working salaries, working conditions, benefits, and other aspects of workers' compensation and labour rights, rights for ...
agreement.
Second, injunctions were crucial to the second half of the twentieth century in the desegregation of American schools. Federal courts gave injunctions that carried out the command of ''
Brown v Board of Education'' to integrate public schools in the United States, and at times courts took over the management of public schools in order to ensure compliance. (An injunction that puts a court in the position of taking over and administering an institution—such as a school, a prison, or a hospital—is often called a "
structural injunction".)
Injunctions remain widely used to require government officials to comply with the Constitution, and they are also frequently used in private law disputes about intellectual property, real property, and contracts. Many state and federal statutes, including
environmental statutes,
civil rights statutes and
employment-discrimination statutes, are enforced with injunctions.
In ''
Grupo Mexicano de Desarrollo, S.A. v. Alliance Bond Fund, Inc.'' (1999), the Supreme Court stated that the scope of federal injunctive relief is constrained by the limits on equitable remedies that existed in the English
Court of Chancery
The Court of Chancery was a court of equity in England and Wales that followed a set of loose rules to avoid a slow pace of change and possible harshness (or "inequity") of the Common law#History, common law. The Chancery had jurisdiction over ...
around 1789.
In 2025, United States Attorney General
Pam Bondi and other Justice Department officials argued in a court filing that "an oral directive is not enforceable as an injunction", after the
second Trump administration completed deportation flights despite a federal judge verbally ordering the flights to be returned to the United States.
Forms
Injunctions in the United States tend to come in three main forms: temporary restraining orders, preliminary injunctions and permanent injunctions.
For both temporary restraining orders and preliminary injunctions, the goal is usually to preserve the status quo until the court is able to decide the case.
=Temporary restraining orders
=
A special kind of injunction that may be issued before trial is called a "temporary restraining order" or TRO. A TRO may be issued without notice to the other party or a hearing. A TRO will be given only for a short period of time before a court can schedule a hearing at which the restrained person may appear and contest the order. If the TRO is contested, the court must decide whether to issue a preliminary injunction. Temporary restraining orders are often, but not exclusively, given to prevent domestic violence, stalking, sexual assault, or harassment.
=Preliminary injunctions
=
Preliminary injunctions are given before trial. Because they are issued at an early stage, before the court has heard the evidence and made a decision in the case, they are more rarely given. The requirements for a preliminary injunction tend to be the same as for a permanent injunction, with the additional requirement that the party asking for the injunction is likely to succeed on the merits.
=Permanent injunctions
=
Permanent injunctions are issued after trial. Different federal and state courts sometimes have slightly different requirements for obtaining a permanent injunction. The Supreme Court enumerated the traditional four-factor test in ''
eBay Inc. v. MercExchange, L.L.C.'' as:
# the plaintiff has suffered irreparable injury;
#
remedies available at law are inadequate to compensate that injury;
# considering the balance of hardships between the plaintiff and defendant, a
remedy in equity is warranted; and
# the public interest would not be disserved by an injunction.
The balance of hardships inquiry is also sometimes called the "undue hardship defense".
A stay pending appeal is a mechanism allowing a losing party to delay enforcement of an injunction while appeal is pending after final judgment has been granted by a lower court.
Antitrust
The DOJ and the FTC have investigated patent holders in the United States for seeking preliminary injunctions against accused infringers of
standard-essential patents, or patents that the patent holder must license on
reasonable and non-discriminatory terms. There is an ongoing debate among legal and economic scholars with major implications for antitrust policy in the United States as well as in other countries over the statutory limits to the patent holder's right to seek and obtain injunctive relief against infringers of standard-essential patents. Citing concerns of the absence of competition facing the patent holder once its technology is locked-in to the
standard, some scholars argue that the holder of a standard-essential patent should face antitrust liability when seeking an injunction against an implementer of a standard. Other scholars assert that patent holders are not contractually restrained from pursuing injunctions for standard-essential patent claims and that patent law is already capable of determining whether an injunction against an infringer of standard-essential patents will impose a net cost on consumers, thus obviating the role of antitrust enforcement.
United Kingdom
Interim injunctions
Interim injunctions or
interim order
The term interim order refers to an order issued by a court during the pendency of the litigation. It is generally issued by the Court to ensure Status quo. The rationale for such orders to be issued by the Courts is best explained by the Latin le ...
s are granted as a means of providing interim relief while a case is being heard, to prevent actions being implemented which potentially may be barred by a final ruling.
Super-injunctions
In England and Wales, injunctions whose existence and details may not be legally reported, in addition to facts or allegations which may not be disclosed, have been issued; they have been informally dubbed "super-injunctions".
An example was the super-injunction raised in September 2009 by
Carter-Ruck solicitors on behalf of oil trader
Trafigura
Trafigura Group Pte. Ltd. is a Singaporean-based multinational commodities company, with major regional hubs in Geneva, Houston, Montevideo and Mumbai, founded in 1993. The company trades in base metals and energy. It is the world's largest pri ...
, prohibiting the reporting of an internal Trafigura report into the
2006 Ivory Coast toxic waste dump scandal. The existence of the super-injunction was revealed only when it was referred to in a parliamentary question that was subsequently circulated on the Internet (
parliamentary privilege
Parliamentary privilege is a legal immunity enjoyed by members of certain legislatures, in which legislators are granted protection against civil or criminal liability for actions done or statements made in the course of their legislative duties ...
protects statements by MPs in Parliament which would otherwise be held to be in contempt of court). Before it could be challenged in court, the injunction was varied to permit reporting of the question. By long legal tradition, parliamentary proceedings may be reported without restriction. Parliamentary proceedings are covered by
absolute privilege, but the reporting of those proceedings in newspapers is only covered by qualified privilege. Another example of the use of a super-injunction was in a libel case in which a plaintiff who claimed he was
defamed by family members in a dispute over a multimillion-pound family trust obtained anonymity for himself and for his relatives.
Roy Greenslade credits the former editor of ''
The Guardian
''The Guardian'' is a British daily newspaper. It was founded in Manchester in 1821 as ''The Manchester Guardian'' and changed its name in 1959, followed by a move to London. Along with its sister paper, ''The Guardian Weekly'', ''The Guardi ...
'',
Alan Rusbridger
Alan Charles Rusbridger (born 29 December 1953) is a British journalist and editor of ''Prospect (magazine), Prospect'' magazine. He was formerly editor-in-chief of ''The Guardian'' and then principal of Lady Margaret Hall, Oxford.
Rusbridger ...
, with coining the word "super-injunction" in an article about the Trafigura affair in September 2009.
The term "hyper-injunction" has also been used to describe an injunction similar to a super-injunction but also including an order that the injunction must not be discussed with members of Parliament, journalists, or lawyers. One known hyper-injunction was obtained at the High Court in 2006, preventing its subject from saying that paint used in water tanks on passenger ships can break down and release potentially toxic chemicals. This example became public knowledge in Parliament under parliamentary privilege.
By May 2011, ''
Private Eye
''Private Eye'' is a British fortnightly satirical and current affairs (news format), current affairs news magazine, founded in 1961. It is published in London and has been edited by Ian Hislop since 1986. The publication is widely recognised ...
'' claimed to be aware of 53 super-injunctions and anonymised privacy injunctions,
though
Lord Neuberger's report into the use of super-injunctions revealed that only two super-injunctions had been granted since January 2010. Many media sources were wrongly describing all
gagging orders as super-injunctions.
The widespread media coverage of super-injunctions led to a drop in numbers after 2011; however four were granted in the first five months of 2015.
European Union
Dynamic Injunction
Injunctions defined by the
European Commission
The European Commission (EC) is the primary Executive (government), executive arm of the European Union (EU). It operates as a cabinet government, with a number of European Commissioner, members of the Commission (directorial system, informall ...
as
injunctions which can be issued for instance in cases in which materially the same website becomes available immediately after issuing the injunction with a different IP address or URL and which is drafted in a way that allows to also cover the new IP address or URL without the need for a new judicial procedure to obtain a new injunction.
Live Blocking Injunction
An injunction described by the European Commission as allowing the repeated blocking of a website every time a live broadcast is in progress. These injunctions are generally used during live sporting events.
See also
*
*
*
* (Mareva injunction)
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Notes
References
External links
On the Difference Between Lawsuit, a Restraining Order, and an Injunction
{{DEFAULTSORT:Injunction
Equity (law)
Judicial remedies
Judicial legal terminology
Common law legal terminology
Court orders