Pharmaceutical The US Supreme Court has ruled that California county Santa Clara cannot sue a group of leading drugmakers, including US majors Pfizer (NYSE: PFE), Merck & Co (NYSE: MRK) and Bristol-Myers Squibb (NYSE: BMY), as well as US subsidiaries of UK-based AstraZeneca (LSE: AZN) and GlaxoSmithKline, France's Sanofi-Aventis (Euronext: SAN), Germany's Bayer (BAY: DE) and Japan's Takeda Pharmaceuticals (TSE: 4502), for not extending pricing agreements made with the federal government to other hospital operators that receive federal funds. 31 March 2011