In Nys can a father stop a mother of his child from changing the child last name from her to his.

The information is:

"2. Paternity

The parents can sign a paternity agreement that adds the father's name to the child's birth certificate. Then, child can take the father's last name.

3. To change your child's name for any other reason

You have to ask the New York State Supreme Court to change your child's name. To do that, you must fill out and file these court forms:

· Name Change Petition

· Name Change Order

· Request for Judicial Intervention (RJI) (original plus 2 copies)

· Index Number Application"

Here is the explanation - How to Change a Child's Name in New York | Legal Assistance

The father does not have to sign the birth certificate if he does not want to.
Once paternity is established the father may object to any name change.

I am confused slightly, is the child born yet