This revised and thoroughly updated Fifth Edition (formerly Lange, LaFrance, Myers, and Lockridge's Intellectual Property casebook) includes all significant legislative and judicial developments through March 2018. The existing materials were streamlined (and in some areas restructured) to provide space for extensive updates on new topics and recent developments without notably lengthening the book. The book covers central issues with appropriate depth and breadth and contains optional extensions into additional topics; as a result, it gives professors the flexibility to use the book in connection with a variety of IP courses and to choose the areas they wish to emphasize.