9 CFR 590.417: Unauthorized use or disposition of approved labels.

(a) Containers or labels which bear official identification approved for use pursuant to § 590.411 shall be used only for the purpose for which approved. Any unauthorized use or disposition of approved containers or labels which bear any official identification may result in cancellation of the approval and denial of the use of containers or labels bearing official identification and may subject such violator to the penalties and denial of the benefits of the Act;

(b) The use of simulations or imitations of any official identification by any person is prohibited;

(c) Upon termination of inspection service in an official plant pursuant to these regulations, all labels or packaging materials indicating product packed by the plant which bear official identification shall either be destroyed under the supervision of the Service or, if used in another location, modified in a manner acceptable to the Service before use.