Ronald Slusky mentored dozens of attorneys in “old school” invention analysis and claiming principles over a 31-year career at Bell Laboratories. He is now in private practice in New York City. This column is adapted from Ron’s widely praised book, “Invention Analysis and Claiming: A Patent Lawyer’s Guide,” (American Bar Association, 2007). Ron presents CLE-accredited one- and two-day seminars based on his book both in public venues and in-house. Details at www.sluskyseminars.com. Ron can be reached at 212-246-4546 and firstname.lastname@example.org.