35 U.S.C. 253 (pre‑AIA): Disclaimer

Taken from the Ninth Edition of the MPEP, Revision 07.2015, Last Revised in November 2015

Current Pre-AIA AIA Redline

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35 U.S.C. 253 (pre‑AIA)   Disclaimer.

[Editor Note: Not applicable to proceedings commenced on or after September 16, 2012. See 35 U.S.C. 253 for the law otherwise applicable.]

Whenever, without any deceptive intention, a claim of a patent is invalid the remaining claims shall not thereby be rendered invalid. A patentee, whether of the whole or any sectional interest therein, may, on payment of the fee required by law, make disclaimer of any complete claim, stating therein the extent of his interest in such patent. Such disclaimer shall be in writing and recorded in the Patent and Trademark Office, and it shall thereafter be considered as part of the original patent to the extent of the interest possessed by the disclaimant and by those claiming under him.

In like manner any patentee or applicant may disclaim or dedicate to the public the entire term, or any terminal part of the term, of the patent granted or to be granted.

(Amended Jan. 2, 1975, Public Law 93-596, sec. 1, 88 Stat. 1949.)