What is the purpose of an abstract in a patent application?

The purpose of an abstract in a patent application is to provide a concise summary that allows readers to quickly determine the nature and gist of the technical disclosure. According to MPEP 608.01(b):

The abstract is a brief narrative of the disclosure as a whole, as concise as the disclosure permits, in a single paragraph preferably not exceeding 150 words, commencing on a separate sheet following the claims.

This summary helps examiners, researchers, and other readers to quickly assess the relevance of the patent application to their interests.

To learn more:

Topics: Patent Law, Patent Procedure