Us Patent Service (Blackboard patent)
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A patent for an invention is the grant of a property right to the inventor, issued by the US Patent Service. The term of a new patent is either 14 or 20 years from the date on which the application for the patent was filed in the United States or, in special cases, from the date an earlier related application was filed, subject to the payment of maintenance fees depending on the kind of patent. US Patent Service patent grants are effective only within the US, US territories, and US possessions. There are several requirements for an invention to be patentable which are enumerated below.

