John E. Kirchner, Attorney at Law | John Kirchner
You need to contact the government agency for vital statistics that issued the birth certificate to find out if there are simple, administrative procedures to issue a new birth certificate. Not all states follow the same rules, but no state will allow you to do it with the mothers' agreement. In all probability you will have to get a judicial determination that you are NOT the father, based on DNA tests, and a court order directing the agency to issue a new birth certificate. Depending on how, and how long it has been since the child was born, you may find that it is too late to challenge because (at least in Colorado) your name could not have been put on the birth certificate without your agreement that you were the father (unless the child was born while you were married). You need to consult a lawyer who can review all the important facts and history and then explains your options.
Answer Applies to: Colorado
Reeves Law Firm, P.C. | Roy L. Reeves
File a request for an amended birth certificate with the state agency that issues them. They may want proof or justification for the change (a court order is excellent for this) and there is usually a fee though it is nominal - $15 here in Texas.
Answer Applies to: Texas