CFR›Title 37›Chapter I›Part 42›Subpart C›Subject Group After Institution of Post-Grant Review ContainsSections 42.220–42.224CorpusDaily eCFRDisplayed edition2026-04-24Last updated2026-04-24 Sections 42.220 § 42.220 Patent owner response. 42.221 § 42.221 Amendment of the patent. 42.222 § 42.222 Multiple proceedings and Joinder. 42.223 § 42.223 Filing of supplemental information. 42.224 § 42.224 Discovery. Next General General