Originally from Philadelphia, San Francisco Patent Attorney David Pressmanis a graduate of Penn State University (BSEE) and George Washington University Law School (JD) where he was on the Law Review. He has over 40 years of experience in the patent profession -- as a patent examiner for the U.S. Patent Office, a patent attorney in corporate and private practice, a university instructor, a columnist, and as author of the Patent and Trademark entries to the World Book Encyclopedia. He is an expert on patent filing, prosecution, and licensing and his books have charted the path for over 250,000 inventors. Patent It Yourself is the most highly recommended guide to patenting an invention. David is also co-author of The Inventor's Notebook (with Fred Grissom), How to Make Patent Drawings Yourself (with Jack Lo), Patent Pending In 24 Hours (with Rich Stim), and Patents For Beginners (with Rich Stim).