What if I have an order naming me as the father, but I have now tested myself and the child, and I am NOT the biological father?

Effective May 12, 2011, a man may seek termination of the parent child relationship if, without genetic testing, he signed an acknowledgement of paternity or was adjudicated the father of a child, because he was mistaken that he was the father. A petition must be filed no later than one year after the man learns he is not the genetic father, beginning September 1, 2012. Before that date, a termination may be filed due to mistaken paternity regardless of how long the man has been aware of the mistake. Texas Family Code 161.005.