Prior art is any evidence that your invention is already known. Prior art does not need to exist physically or be commercially available. It is enough that someone, somewhere, sometime previously has described or shown or made something that contains a use of technology that is very similar to your invention.
Our prior art searches are conducted on a Worldwide basis, with special attention to jurisdictions including U.S., Europe, Asia and other foreign jurisdictions. The prior art searches also include Non-Patent Literature searches including electronically available journals, websites, technical literature, manuals, books, articles, and blogs etc.