37 CFR 11.301 : 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) — Representation Of Others Before The United States Patent And Trademark Office (Section 11.1 To Section 11.100) — Uspto Rules Of Professional Conduct (Section 11.101 To Section 11.100) — Client-Practitioner Relationship (Part 11) (Section 11.101 To Section 11.901) — Meritorious claims and contentions.

31 Dec 2014

A practitioner shall not bring or defend a proceeding, or assert or controvert an issue therein, unless there is a basis in law and fact for doing so that is not frivolous, which includes a good-faith argument for an extension, modification or reversal of existing law.

37 CFR 11.301