This document discusses several patent cases in India between foreign pharmaceutical companies and Indian generic drug manufacturers. It summarizes key patent cases such as Novartis vs. India regarding Glivec, Bayer vs. Natco regarding Nexavar, Roche vs. Cipla regarding Tarceva. It also discusses India's patent laws including sections 3(d) and compulsory licensing. Many foreign drug patents were revoked by Indian courts based on lack of innovation or in the interest of public health and making medicines more affordable in India. The document supports India's stance on promoting generic competition and ensuring access to healthcare.