1) The document summarizes 5 patent related case studies involving pharmaceutical companies. The first case discusses Novartis' attempt to patent the cancer drug Gleevec in India and the Indian Supreme Court's rejection of the patent. 2) The second case discusses an American company's attempt to patent Basmati rice in the US and its subsequent cancellation due to violation of Geographical Indications. 3) The third case discusses a multinational corporation's attempts to patent neem extracts and its uses, which was opposed by an Indian organization and eventually revoked. 4) The fourth case discusses the attempted patent of turmeric for wound healing by a US institution, which was cancelled after opposition from India. 5