Wyeth sues Novartis over patent infringement
Even as two multinationals and an Indian pharma company fight over a generic drug to treat stomach acid, a third giant has been pulled into legal battle. Pharma biggie Wyeth had filed a patent suit against Teva Pharmaceuticals and Mumbai-based Sun Pharma for its generic drug, Protonix. Wyeth is now also suing fellow biggie Novartis, whose generic unit Sandoz has applied to bring an injectable version of Protonix to market.