A preliminary injunction is a provisional remedy issued by a court before final judgment to preserve the status quo and prevent irreparable harm. It requires a party to refrain from or perform a particular act. A preliminary injunction may be issued by a court of appeals to stay execution of a writ pending appeal in an unlawful detainer case. Presidential Decree 1818 prohibits judges from issuing restraining orders against government infrastructure projects, but this is not an absolute prohibition. To issue a preliminary injunction, the court must find that there is an existing right to be protected that is being violated by the act sought to be enjoined, and that allowing that act would likely cause injustice to the applicant or render a judgment ineffectual.