Widely appreciated by attorneys and inventors for its clear, uncomplicated approach to a complex field, Patent Law: A Practitioner s Guide gives you a solid working knowledge of the legal framework governing patents, including Developments under the America Invents Act Federal regulations and court decisions The widely accepted four-step test used by the courts to determine an invention s patentability The various tests used to indicate direct infringement and other patent violations Drafting techniques used to prepare the full variety of documents, including specifications and claims New for the fourth edition are chapters on comparative patent law, derivation proceedings, and post-grant procedures. Patent Law features numerous time-saving sample forms flowcharts, diagrams and tables that quickly enhance your understanding of key patent law issues and hypothetical questions (with answers) that help prepare you for the real-world challenges of patent prosecution."