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Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-07-06 10:51:44 -04:00

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LegalText 35 U.S.C. § 288 Action for infringement of a patent containing an invalid claim us united_states_code code_section 35 PATENTS 29 REMEDIES FOR INFRINGEMENT OF PATENT, AND OTHER ACTIONS 288 35 U.S.C. § 288 current 119-100 2026-06-26 official https://uscode.house.gov/download/releasepoints/us/pl/119/100/xml_usc35@119-100.zip /us/usc/t35/s288 data/legal/raw/us/code/title-35/usc35.xml 18f712706fa1b3c83905e5fb5bbab87bcccf850e6282f915cdf45f4e42825fd6 736cab508592dcf50013a1aed5ab108f72fd8493e76afc46848cdc35da38bbe3 b271e7f5167488f08cb63738ca88314c52a0be00445a626c7609894d9821888b 2026-07-04 official
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35 U.S.C. § 288 - Action for infringement of a patent containing an invalid claim

Text

Whenever a claim of a patent is invalid, an action may be maintained for the infringement of a claim of the patent which may be valid. The patentee shall recover no costs unless a disclaimer of the invalid claim has been entered at the Patent and Trademark Office before the commencement of the suit.

(July 19, 1952, ch. 950, 66 Stat. 813; Pub. L. 93596, § 1, Jan. 2, 1975, 88 Stat. 1949; Pub. L. 11229, § 20(h), Sept. 16, 2011, 125 Stat. 334.)

Notes

Historical and Revision NotesBased on Title 35, U.S.C., 1946 ed., § 71 (R.S. 4922). The necessity for a disclaimer to recover on valid claims is eliminated. See section 253. Language is changed.

Editorial Notes

Amendments2011—Pub. L. 11229 struck out “, without deceptive intention,” after “Whenever”. 1975—Pub. L. 93596 substituted “Patent and Trademark Office” for “Patent Office”.

Statutory Notes and Related Subsidiaries

Effective Date of 2011 AmendmentAmendment by Pub. L. 11229 effective upon the expiration of the 1-year period beginning on Sept. 16, 2011, and applicable to proceedings commenced on or after that effective date, see section 20(l) of Pub. L. 11229, set out as a note under section 2 of this title.

Effective Date of 1975 AmendmentAmendment by Pub. L. 93596 effective Jan. 2, 1975, see section 4 of Pub. L. 93596, set out as a note under section 1111 of Title 15, Commerce and Trade.