Paternity Attorney in Buffalo & Williamsville, NY
Establishing paternity is the legal foundation for a father’s rights and a child’s access to support, inheritance, and benefits. We help parents navigate paternity proceedings on both sides of the question.
Why Paternity Matters
Paternity is the legal determination of who a child’s father is. Under New York law, a man is not automatically a child’s legal father unless he is (1) married to the mother at the time of birth, (2) has signed an Acknowledgment of Paternity, or (3) has been adjudicated the father by a court. Without legal paternity, a father has no enforceable custody or visitation rights, and a child has no legal claim against the father for support, inheritance, or benefits (including Social Security survivor benefits, veterans’ benefits, and health insurance).
Establishing paternity benefits everyone — the child gains financial support, access to complete medical history, and an established relationship with both parents; the father gains the right to be part of the child’s life; and the mother obtains the ability to enforce a support obligation. Our attorneys help mothers, fathers, and in some cases children establish or contest paternity in Erie County Family Court.
How Paternity Is Established in New York
1. Voluntary Acknowledgment of Paternity (AOP)
The simplest route is a voluntary, written Acknowledgment of Paternity (AOP) signed by both parents, usually at the hospital at the time of birth but available at any time through the Putative Father Registry or local DSS office. The AOP must be signed by both parents, acknowledged before a notary or witness, and filed with the New York State Department of Health. Once filed, it has the same legal effect as a court order and establishes the signatory as the child’s legal father.
An AOP can be rescinded within 60 days of signing. After 60 days, it can only be challenged in court by proving fraud, duress, or material mistake of fact — and genetic testing alone is not sufficient grounds for rescission after that window.
2. Court-Ordered Paternity (Article 5, Family Court Act)
Either parent, the child, or the Department of Social Services can file a paternity petition in Family Court under Article 5 of the Family Court Act. The court can order genetic testing (DNA testing) of the child, the mother, and the alleged father. Under FCA §532, a DNA test result establishing paternity with a probability of 95% or greater creates a rebuttable presumption of paternity. Typical paternity test results show probabilities of 99.9% or higher.
If the alleged father refuses to submit to court-ordered DNA testing, the court can draw an adverse inference against him.
Rights That Flow From Established Paternity
Once paternity is legally established, both parent and child acquire a full range of legal rights and obligations:
- The father has standing to petition for custody and visitation in Family Court
- The father is obligated to pay child support under the CSSA formula
- The child has inheritance rights from the father (and his family) under New York’s intestacy laws
- The child may be eligible for the father’s health insurance
- The child may be eligible for Social Security benefits based on the father’s work history
- The child obtains the father’s medical and family history, which may be medically significant
Contesting Paternity
A man who has been named as a father — whether through an AOP or a prior court order — and who doubts his biological connection to the child has a narrow but real legal avenue to challenge that determination. The standard for vacating an AOP after the 60-day rescission period is fraud, duress, or material mistake of fact. The standard for vacating a judicial order of paternity is similarly demanding.
Courts are particularly cautious about upsetting established paternity when the child has formed a parental bond with the legal father, even if biology does not support that relationship. The best interests of the child are always a paramount concern, which means a purely biological challenge without a corresponding consideration of the child’s welfare is unlikely to succeed.
Frequently Asked Questions
Can a mother refuse to allow paternity testing?
If a paternity petition is filed in Family Court, the court can order genetic testing over a mother’s objection. A parent cannot unilaterally block court-ordered DNA testing. Refusing to comply with a court order for testing can result in contempt findings and adverse inferences in the proceeding.
Does signing an AOP automatically give the father custody rights?
No. An AOP establishes legal paternity and the support obligation, but does not itself create custody or visitation rights. To obtain legally enforceable custody or visitation, the father must file a petition in Family Court. An unmarried father has standing to petition for custody and visitation once paternity is established, but custody is determined separately based on the child’s best interests.
What if the father’s name is already on the birth certificate?
In New York, a man’s name on a birth certificate is not by itself legal paternity (unlike in some states). Paternity requires either an AOP filed with the State, a court order, or a legal presumption (such as being married to the mother at the time of birth). A name on a birth certificate without an AOP or court order does not create enforceable custody, support, or inheritance rights.
What happens to child support if paternity is later found to be incorrect?
This is one of the most fact-specific questions in family law. If a man has been paying child support under a court order based on a judicial finding of paternity, overturning that order requires demonstrating fraud, duress, or mistake. Retroactive reduction of support arrears is extremely difficult to obtain even if paternity is later disproved. Courts are reluctant to disrupt financial arrangements that the child has been relying on.
How long does a paternity proceeding take?
In Erie County Family Court, an uncontested paternity proceeding with DNA testing can be resolved in 3 to 6 months. Contested proceedings — particularly where the alleged father disputes the results or there are multiple potential fathers — take longer. Cases involving challenges to prior AOPs or court orders require additional proceedings and may take a year or more.
The New York Putative Father Registry
New York maintains a Putative Father Registry (PFR) administered by the Office of Children and Family Services (OCFS). A man who believes he may be the father of a child born outside of marriage can register with the PFR before the child’s birth or within 30 days of the birth. Registration serves a critical notice function: if an adoption proceeding is initiated involving that child, the registered putative father must be notified and given an opportunity to appear and contest the adoption.
Failure to register does not eliminate paternity rights entirely, but it has serious procedural consequences in adoption proceedings. A putative father who did not register and was not otherwise known to the mother or agency may not receive notice of an adoption and may lose the opportunity to object. Courts have consistently held that the PFR is a reasonable mechanism for protecting fathers’ rights and that failure to use it, when available, can result in forfeiture of the right to notice.
Registration is straightforward and can be done online through the OCFS website or by mailing a completed form. However, registration with the PFR is not a substitute for filing a paternity petition or signing an AOP. It protects only against unanticipated adoption proceedings; it does not, by itself, establish legal paternity or create custody, visitation, or support rights. If you believe you are a child’s father and the mother has not cooperated with formal paternity establishment, we recommend both registering with the PFR and filing a paternity petition in Family Court.
Paternity, Child Support, and Public Benefits
The Erie County Department of Social Services (DSS) has an independent interest in paternity establishment: when a child receives public assistance (Medicaid, SNAP, TANF), DSS is entitled to seek reimbursement from the legal father through child support. As a condition of receiving public assistance, a custodial parent is typically required to cooperate with DSS in identifying and establishing paternity for any child in the household. Failure to cooperate can affect the custodial parent’s own benefit eligibility.
DSS can file a paternity petition on behalf of the child independent of the mother’s wishes. This means that even if the mother does not wish to pursue paternity, DSS can compel the proceeding. Men who receive notice of a DSS-initiated paternity proceeding should not ignore it: a default order of paternity can be entered if you fail to appear, and that order carries full legal force, including an immediate child support obligation that accrues from the date of the petition.
On the flip side, establishing paternity can open important benefit doors for children. A child whose paternity is legally established is entitled to Social Security benefits based on the father’s work record — both survivor benefits if the father dies, and derivative disability benefits if the father becomes disabled. The child may also be eligible for veterans’ benefits, union death benefits, and employer health insurance through the father. These benefits can have substantial long-term financial value, particularly in cases where the biological father has died before paternity was formalized.
The Marital Presumption of Paternity in New York
New York, like most states, applies a strong legal presumption that a child born to a married woman is the child of her husband. This presumption — sometimes called the “marital presumption” or the Domestic Relations Law §24 presumption — exists primarily to protect children from the stigma and disruption that would follow from routine challenges to parentage in intact or recently dissolved marriages.
The presumption is not irrebuttable, but it is strong. To overcome the marital presumption, the challenging party must produce clear and convincing evidence that the husband is not the biological father, and — crucially — courts require a weighing of the child’s best interests before the presumption is set aside. Even in the face of DNA evidence excluding the husband as the biological father, New York courts have on occasion declined to vacate legal paternity where the husband and child had established a meaningful parental bond and disturbing that relationship would harm the child.
This creates complex situations when a third-party biological father wishes to assert parental rights over a child born during the mother’s marriage. A biological father outside the marriage generally has more limited rights than a presumptive marital father, and courts will balance the claims with particular attention to the stability of the child’s existing family relationships. If you are involved in a contested paternity situation touching on the marital presumption — as the husband, the biological father, or the mother — early legal guidance is essential because the procedural steps you take (or fail to take) in the first weeks can significantly affect your options later.
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