Information outdated
I bought the 12th Edition in Feb. 2008 - suppose to be the latest revision at that time. Lots of information in there are actually out-of-date. For example, the Disclosure Document Program described in it has already been terminated by the Patent office. I followed its instructions in there and then ended up wasting lots of time.

Total waste of time and money. Well, may be the book is not that bad itself but just the rapid changing nature of the information it's covering. Afterwards I found all the information I needed from the Internet. It's better off just find them on the Web instead of depending on this book.

One of the best
This is an excellent book where the author puts everything in an orderly manner and feeds the reader with all his vast knowledge

The best of its type
I wasted thousands of dollars and hours I could have used towards success if I had read "Patent it Yourself" BEFORE I became a serious inventor. This was my third edition to purchase which is testimony enough.

Awesome!
Awesome book! Helped with every step of the Patent process and to clear up many, many misconceptions. I would recommend this to everyone planning to write their own patent, need help or thinking of hiring an attorney. Which you won't need after you read this book!

A must-read for serious, individual inventors
(Be sure you order the latest edition - 13th at this June 2008 writing)
This hefty volume is the best I've seen for its detail and advice to serious inventors. It goes well beyond generalities and contains very specific advice on the idea protection process. Almost everybody has idea(s) that they consider patenting at one time or another. When you get to that serious stage with an idea (as I've been), and even if you plan to work with a patent attorney (as I am), the specific information in Mr. Pressman's series show a clear roadmap to follow to save time and money. He doesn't say, "Find a service to evaluate the marketability of your idea;" he gives companies, institutions, contact names, phone numbers, and Web sites. And very pointed advice to stay away from those close-cover-before-striking inventor services.
He includes the forms, language, fees, and instructions that will either intimidate you from pursuing a patent, or encourage you that your idea is patentable and how to get it done. I'm still reading my well-marked, dog-eared copy, working toward using his licensing advice.