This article focuses primarily on recent changes to irreparable harm standards, how those changes have altered the patent litigation landscape. In the vast majority of patent cases, federal courts have granted injunctive relief upon a finding of infringement.This article considers these questions in light of case decisions and a statistical analysis of requests for preliminary injunctive relief in trademark cases. A patentee is presumptively entitled to permanent injunctive relief for infringement under Canadian law if successful on the merits after a trial. Section 283 of the Patent Act gives district courts the power to grant injunctive relief for patent infringement. A party thus is not required to prove his case in full at a preliminary-injunction hearing . . . Section 283 of the Patent Act gives district courts the power to grant injunctive relief for patent infringement. Than necessary to provide complete relief"? In the vast majority of patent cases, federal courts have granted injunctive relief upon a finding of infringement. Patent owners must show that patented feature drives consumer demand to obtain injunction to prove up irreparable harm.