The Federal Circuit affirms a preliminary injunction barring a competing cancer-recurrence assay, sharpening how courts trace irreparable harm to the patented method through the causal-nexus requirement.
The Federal Circuit finally confirmed that eBay abolished the presumption of irreparable harm, yet reversed a district court that had used categorical reasoning to deny a competitor's permanent injunction.
The Federal Circuit affirmed a permanent injunction against a feature of Microsoft Word, showing how a small patentee can satisfy all four eBay factors against a dominant competitor when the injunction is carefully scoped.
The Supreme Court refused to treat injunctive relief as an automatic consequence of patent infringement, restoring the traditional four-factor equity test and reshaping patent litigation for a generation.
