Book excerpt: Pharmaceutical and Biotech Patent Law provides you with the legal, scientific, and technical information you need to help clients obtain, defend, and challenge patents in these important business areas. This practical guide shows you how to craft problem-free patent applications, including how to partner with the government to bring patented inventions quickly to the marketplace - invalidate competitors' patents by proving that they fail to meet key requirements - protect against various forms of patent infringement - and successfully rebut charges of infringement. It includes detailed checklists that help you resolve thorny patent problems in the complex pharmaceutical and biotech fields, and is regularly updated to reflect Federal Circuit rulings and other significant court decisions.