A patent is a government granted right that makes it possible for the inventor to exclude any person from making, using or selling the new product idea in the place that issued the patent. The government grants this right to help encourage inventors to spend the time, income and energy to invent new goods, technologies and the like inventions.
In the United States, the term of a new patent is 20 years from the date on which the application for the patent was submitted or, in particular conditions, from the date an earlier linked application was submitted, subject to the payment of maintenance fees.
When a patent expires, the new product enters the general public domain allowing for everyone to make, use or sell the invention without needing the authorization or spending any royalty to the inventor. The government involves patents to expire mainly because otherwise just one individual can command an entire sector if that particular person was the first to conceive of a kind of merchandise.
The patent law specifies the standard subject that can be patented and the conditions below which a patent for an invention may possibly be acquired. Any human being who "invents or discovers any new and helpful approach, equipment, manufacture, or composition of matter, or any new and beneficial advancement thereof, may obtain a patent," subject to the situations and specifications of the regulation.
In order for a new product to be patentable it should be new as defined in the patent regulation, which gives that a new product can't be patented if: "(a) the product was known or used by other folks in this nation, or patented or described in a printed publication in this or an international nation, prior to the invention thereof by the applicant for patent," or