What cannot be patented?
Laws of nature, Physical phenomena, Abstract ideas, Inventions which are considered not useful or possible by the USPTO for example perpetual motion machines; or offensive to public morality.The Patent Classification System
Patents are organized by class and subclass of invention , similar to the way books are organized in a library). By using the classification system , you can find and examine patents that are in the same field (class) as your idea. The tutorial How to Conduct a Patent Search will introduce you to this form of searching, however, this is difficult material to master.Typical Filing Fees for an Independent Inventor
$625 - $825 for the filing fee with no more than 3 claims, which is non-refundable whether or not a patent is granted. This is the fee to have your application "examined" by the USPTO and your patent application may be rejected.is my idea patentable
Have you ever had an idea for some gadget to make life easier and wondered if it had been invented yet? Ever thought about selling your invention and needed to know if someone already beat you to it? One way to find these answers is to look for patents on similar gadgets and determine whether your invention is unique.How To Qualify for a Patent
Difficulty: Hard - Time Required: Variable - Ask yourself if your invention can be adequately described or enabled -- can someone in the same field make and use it? Can you make your claim to the invention in clear and definite terms? A patent cannot be obtained upon a mere idea or suggestion and to obtain a patent, you need to be able to describe all aspects of your invention.