CFR›Title 4›Chapter I›Part 28›Subpart B›Subject Group Parties, Practitioners and Witnesses ContainsSections 28.25–28.29CorpusDaily eCFRDisplayed edition2026-04-24Last updated2026-04-24 Sections 28.25 § 28.25 Representation. 28.26 § 28.26 Witness fees. 28.27 § 28.27 Intervenors. 28.28 § 28.28 Substitution. 28.29 § 28.29 Consolidation or joinder. Previous Interlocutory Appeals Interlocutory Appeals Next Subpoenas Subpoenas