Levocetrizine (Xyzal): Innovator File second Suit To Thwart Generic challenge

Belgian drugmaker UCB SA and its U.S. partner, Sepracor Inc., have filed their second lawsuit in two months in an effort to stave off a generic challenge to their antihistamine drug Xyzal.
The lawsuit was filed on wednesday on US district court for the Eastern District of North Carolina. UCB alleged that Sun pharma infringed the company's patent US5698558 (Expiry: September 24, 2012, which covers method of use of levocetrizine) for levocetirizine hydrochloride 5mg by filing an ANDA with USFDA.Eralier innovator has sued first para IV filer Synthon for infringement of said patent as reported earlier by this blog