Texas Administrative Code
Title 31 - NATURAL RESOURCES AND CONSERVATION
Part 1 - GENERAL LAND OFFICE
Chapter 1 - EXECUTIVE ADMINISTRATION
Subchapter C - PROCEDURE FOR PATENTING LAND
Section 1.27 - Application for Corrected Patent

In cases where a patent has been issued and is afterward found to be in conflict with any older title, a corrected patent shall be issued upon receipt by the General Land Office of an affidavit of ownership from the landowner requesting that the old patent be cancelled and a new one issued. The original patent shall be returned to the land office for cancellation unless it has been lost or destroyed, in which case the affidavit should state the reason why the original patent cannot be returned for cancellation.