37 C.F.R. § 2.26 Use of old drawing in new application.
Title 37 - Patents, Trademarks, and Copyrights
In an application filed in place of an abandoned or rejected application, or in an application for reregistration (§2.158), a new complete application is required, but the old drawing, if suitable, may be used. The application must be accompanied by a request for the transfer of the drawing, and by a permanent photographic copy, or an order for such copy, of the drawing to be placed in the original file. A drawing so transferred, or to be transferred, cannot be amended.
Title 37: Patents, Trademarks, and Copyrights
PART 2—RULES OF PRACTICE IN TRADEMARK CASES
Application for Registration
§ 2.26 Use of old drawing in new application.

