CFR›Title 37›Chapter I›Part 1›Subpart F ContainsSubject groups Adjustment of Patent Term Due to Examination Delay–Extension of Patent Term Due to Regulatory ReviewCorpusDaily eCFRDisplayed edition2026-04-24Last updated2026-04-24 Subpart F—Adjustment and Extension of Patent Term Subject Groups Adjustment of Patent Term Due to Examination Delay Adjustment of Patent Term Due to Examination Delay Sections 1.701–1.705 Extension of Patent Term Due to Regulatory Review Extension of Patent Term Due to Regulatory Review Sections 1.710–1.791 Authority35 U.S.C. 2(b)(2), 154, and 156.Source52 FR 9394, Mar. 24, 1987, unless otherwise noted. Previous E Subpart E—Supplemental Examination of Patents Next G Subpart G—Biotechnology Invention Disclosures