Go to MPEP - Table of Contents
2161 Three Separate Requirements for Specification Under - 2100 Patentability
2161 Three Separate Requirements for Specification Under
35 U.S.C. 112, First ParagraphTHE SPECIFICATION MUST INCLUDE A WRITTEN DESCRIPTION OF THE INVENTION, ENABLEMENT, AND BEST MODE OF CARRYING OUT THE CLAIMED INVENTION
The first paragraph of 35 U.S.C. 112 provides:
The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor of carrying out his invention. [emphasis added].
This section of the statute requires that the specification include the following:
(A) A written description of the invention;
(B) The manner and process of making and using the invention (the enablement requirement); and
(C) The best mode contemplated by the inventor of carrying out his invention.
THE THREE REQUIREMENTS ARE SEPARATE AND DISTINCT FROM EACH OTHER
The written description requirement is separate and distinct from the enablement requirement. In re Barker, 559 F.2d 588, 194 USPQ 470 (CCPA 1977), cert. denied, 434 U.S. 1064 (1978); Vas-Cath, Inc. v. Mahurkar, 935 F.2d 1555, 1562, 19 USPQ2d 1111, 1115 (Fed. Cir. 1991) (While acknowledging that some of its cases concerning the written description requirement and the enablement requirement are confusing, the Federal Circuit reaffirmed that under 35 U.S.C. 112, first paragraph, the written description requirement is separate and distinct from the enablement requirement and gave an example thereof.). An invention may be described without the disclosure being enabling (e.g., a chemical compound for which there is no disclosed or apparent method of making), and a disclosure could be enabling without describing the invention (e.g., a specification describing a method of making and using a paint composition made of functionally defined ingredients within broad ranges would be enabling for formulations falling within the description but would not describe any specific formulation). See In re Armbruster, 512 F.2d 676, 677, 185 USPQ 152, 153 (CCPA 1975) ("[A] specification which 'describes' does not necessarily also 'enable' one skilled in the art to make or use the claimed invention."). Best mode is a separate and distinct requirement from the enablement requirement. In re Newton, 414 F.2d 1400, 163 USPQ 34 (CCPA 1969).
Go to MPEP - Table of Contents