This book is a valuable and practical go-to reference for general practitioners, business lawyers, and corporate counsel who need to quickly learn and understand the intellectual property (IP) issues that arise in various business contexts. This third edition is updated and expanded to include two new chapters; updates to existing chapters to reflect recent changes, including the significant changes brought by the Leahy-Smith America Invents Act; and contributions from 20 peer-reviewers. The book contains 20 chapters that are short and readable and include "Traps for the Unwary" and practice tips from over 50 experienced attorneys, two law professors, and a judge.