37 CFR 2.33 : Patents, Trademarks, And Copyrights (Section 2.11 To Chapter V) — United States Patent And Trademark Office, Department Of Commerce (Parts 1 - 199) (Section 2.11 To Parts 151-199) — Unknown Title (Parts 2 - 90) (Section 2.11 To Section 90.3) — Rules Of Practice In Trademark Cases (Section 2.11 To Section 2.7) — Representation By Attorneys Or Other Authorized Persons (Part 2) (Section 2.11 To Section 2.209) — Verified statement.