If the biological dad is not on the birth certificate...?

No one gets rights just for signing the AOP (no one signs the actual BC). Unwed dad's need a court order.

Biodad can come back an attempt to assert his place. However if the other man has acted like dad, raised the child, cared for the child, and is the father as far as the child knows, most judges won't break that bond. DNA is not fatherhood, it's just biology.

It's perjury to sign a declaration of paternity if you know you in fact are not the father, though I have never in the real world personally seen any serious consequences for doing it (this is in California).

The real biological father can assert his parental rights at any time.

The biological father at anytime can step forward and demand the right to have access to his child. the kid could be 16 0r 17 if the father wants it he has that right.period.Plus if the mother seeks child support from health and welfare. they will go after the father for the money, its a given.

Yes, the biological father could file a custody case, during which a DNA test would be done.

in my state, if you know a chick is pregnant and you fuc_ked her you got 30 days to make a claim........if you didn't know, you are out of luck...do this...10 years down the road go claim your kid ...figure 500 a month child support.....bring a check for sixty thousand dollars

Yes. And they can be chargef with fraud also.