Temporary restraining orders, preliminary injunctions, and permanent injunctions are powerful and sometimes devastating weapons. Injunctions in Illinois come in three different forms.There are: Temporary Restraining Orders; Preliminary Injunctions; Permanent Injunctions. Download and complete the Order of Protection forms from the Illinois Office of the Courts. In order to get an injunction, you have to file a Petition with the court. You must also attach an affidavit to your Petition. A preliminary injunction is a temporary court order that stops someone from doing something that could cause harm while a lawsuit is pending. A temporary restraining order, or TRO, is usually the first step in emergency litigation. There are two types of injunctions – an ex parte temporary injunction and a final injunction issued after notice to the respondent and a hearing. They are (1) a temporary restraining order ("TRO"), (2) preliminary injunction, and after a merits hearing, (3) a permanent injunction.