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The abstract must commence on a separate sheet, preferably following the claims, under the heading "Abstract" or "Abstract of the Disclosure." The sheet or sheets presenting the abstract may not include other parts of the application or other material. Form paragraph 6.16.01 (below) may be used if the abstract does not commence on a separate sheet. Note that the abstract for a national stage application filed under 35 U.S.C. 371 may be found on the front page of the Patent Cooperation Treaty publication (i.e., pamphlet). See MPEP ยง 1893.03(e).
The abstract should be in narrative form and generally limited to a single paragraph preferably within the range of 50 to 150 words in length. The abstract should not exceed 15 lines of text. Abstracts exceeding 15 lines of text or 150 words should be checked to see that they are as concise as the disclosure permits. The form and legal phraseology often used in patent claims, such as "means" and "said," should be avoided. The abstract should sufficiently describe the disclosure to assist readers in deciding whether there is a need for consulting the full patent text for details.
The language should be clear and concise and should not repeat information given in the title. It should avoid using phrases which can be implied, such as, "This disclosure concerns," "The disclosure defined by this invention," "This disclosure describes," etc.