Code of Federal Regulations Title 37. Patents, Trademarks, and Copyrights § 37.11.303 Candor toward the tribunal

(1) Make a false statement of fact or law to a tribunal or fail to correct a false statement of material fact or law previously made to the tribunal by the practitioner;

(2) Fail to disclose to the tribunal legal authority in the controlling jurisdiction known to the practitioner to be directly adverse to the position of the client and not disclosed by opposing counsel in an inter partes proceeding, or fail to disclose such authority in an ex parte proceeding before the Office if such authority is not otherwise disclosed;  or

(3) Offer evidence that the practitioner knows to be false. If a practitioner, the practitioner's client, or a witness called by the practitioner, has offered material evidence and the practitioner comes to know of its falsity, the practitioner shall take reasonable remedial measures, including, if necessary, disclosure to the tribunal. A practitioner may refuse to offer evidence that the practitioner reasonably believes is false.