Prior Art:The existing body of knowledge, including patents and publications, that is used to determine if an invention is new and non-obvious, and therefore eligible for patent protection.
Enablement:The requirement that the patent disclosure must provide enough information for a person skilled in the art to make and use the claimed invention without undue experimentation.
Written Description:The requirement that the patent application must describe the invention in sufficient detail to demonstrate that the inventor was in possession of the full scope of the claimed invention at the time of filing.