Court swats down Vanda's patent suit against Teva and Apotex, clearing the way for Hetlioz generics

The clock is ticking on Vanda Pharmaceuticals’ sleep disorder drug Hetlioz—and, Tuesday, it got louder.

A federal court in Delaware has not only rejected Vanda’s claim of patent infringement against generic drug makers Teva Pharmaceuticals and Apotex, it has ruled that four of Vanda’s patent claims are invalid.