11.2.3 The Parts of a Patent is a section of the United States Patent and Trademark Office (USPTO) guidelines which outlines the necessary components of a patent application. The components of a patent application are the specification, drawings, claims, and oath or declaration. The specification is a written document that describes the invention, including its purpose and function, as well as the details of its construction and operation. Drawings are diagrams that illustrate the invention and its features. Claims are the legal definition of the invention, which define the scope of the invention’s protection and serve as the basis of the patent. And finally, the oath or declaration is a statement made by the inventor that the invention is his or her own original work.