US firm sues Cadila in patent row (Business Standard India)

US firm sues Cadila in patent row (Business Standard India)
Three Rivers Pharmaceuticals, a US-based speciality drug manufacturer, has sued Zydus Cadila (Cadila Healthcare) and its US subsidiary Zydus Pharmaceuticals (USA) for infringing on the former s patent on a process for manufacturing an anti-viral drug Ribavirin used in the treatment of Hepatitis C.