Does the written description need to be literal to satisfy the requirement?
No, the written description does not need to be literal to satisfy the requirement. As stated in MPEP 2163.02: “The subject matter of the claim need not be described literally (i.e., using the same terms or in haec verba) in order for the disclosure to satisfy the description requirement.“
However, it’s important to note that if a claim is amended to include subject matter, limitations, or terminology not present in the original application, the examiner may conclude that the claimed subject matter is not described in the application. This could result in a rejection under 35 U.S.C. 112(a) or pre-AIA 35 U.S.C. 112, first paragraph, or denial of the benefit of an earlier filing date.
To learn more:
Topics:
MPEP 2100 - Patentability,
MPEP 2163.02 - Standard For Determining Compliance With The Written Description Requirement,
Patent Law,
Patent Procedure