The short answer
Paternity means legal fatherhood. If the parents weren’t married when the child was born, the law doesn’t automatically treat the father as the legal father. It can be established by a voluntary acknowledgment both parents sign, or by a court case, which is also how a DNA test is ordered. Signing an acknowledgment is the fastest route when you agree.
Why it matters
Paternity is what gives a father legal rights and responsibilities, including custody, visitation and child support. Without a court order, custody generally rests with the mother when the parents aren’t married, and being on the birth certificate isn’t enough on its own.
The paths
| Path | Fits when | Read next |
|---|---|---|
| Voluntary acknowledgment | Both parents agree and will sign | How paternity is established |
| Adding a parent to the birth certificate | You want the certificate to match | Adding a parent to a birth certificate |
| Court case | The parents disagree, or one parent won’t cooperate | How paternity is established |
After paternity
When you need a lawyer
Talk to an attorney, or call Legal Aid if money is tight, if there’s a dispute over who the father is, a safety concern, or a case you can’t settle.
Review record: All 2 flagged items reviewed by Brandon M. Haubert, latest 2026-10-25.