The five primary requirements for patentability are: (1) patentable subject matter; (2) utility; (3) novelty; (4) non-obviousness; and (5) enablement. Like trademarks, patents are territorial, meaning they are enforceable in a specific geographic area.
Drafting a Patent Specification: An Illustration Background of the Invention. Problems to be Solved. Prior Arts. Summary of the Invention. Brief Description of the Drawings. Detailed Description of the Invention. Claims. Abstract.