Depends on your state. see links
what do I do if my child's father is no where to be found what do I do if my child's father is no where to be found
Only if the child has a severe disability.
Not likely.
Yes. If paternity has been established the father will be required to pay child support until the child is at least eighteen.
No. The child's father is the child's father, no matter what relationship he has with the child. Birth certificates record facts, not relationships.
Yes.
no it goes to the mother.
he sure does....
If your child is 18 years of age or older, and considered an adult, then no you do not have any basis with which to sue the father for child support. That child is considered an adult by legal standards and not a dependent. Only for full-time dependents do you have any grounds for child support.
Yes. Whether a court will award it to him or not is a different matter.
no
In general, the courts will not initiate support for a 23-year-old child (past-due support, owed from when the child was a minor, is another matter), unless the child is severely handicapped.