A Practice Note explaining the key issues counsel should consider before moving for a temporary restraining order (TRO) or a preliminary injunction in Illinois circuit court civil litigation. This Note addresses the various types of preliminary injunctive relief available in Illinois, cost considerations, legal and contractual limits on the availability of preliminary injunctive relief, the standards for obtaining preliminary injunctive relief, the need for expedited discovery, potential consequences if the plaintiff loses on the merits, the need for an injunction bond, damages for a wrongfully issued TRO or preliminary injunction, and the enforceability of preliminary injunctive relief.