Twelve days before a permanent injunction halting sales of Sanofi and Regeneron Pharmaceuticals Inc.’s Praluent (alirocumab) was to go into effect, the US Court of Appeals for the Federal Circuit stayed the injunction pending the outcome of an appeal, which will take several months.
In a Feb. 8 order in the Amgen Inc. v. Sanofi PCSK9 litigation, the court said its...





