This article defines preliminary injunction, details its elements and the hearing process, and includes a sample motion to download. Generally, an evidentiary hearing is necessary before imposing a preliminary injunction. Vill.Of Lake in the Hills v. As the name suggests, preliminary injunctive relief is provisional. Its function is to preserve the status quo pending a full hearing on the merits. Basically, there are four elements you must prove in order to obtain a preliminary injunction. A temporary restraining order (TR0) is a form of injunctive relief that a person, business or government agency when starting a lawsuit. Illinois Legal Aid Online provides a guided interview called an Easy Form that will help you fill out the forms.