Fatherhood is not always automatic under Michigan law. When parents are unmarried, a man generally must establish legal parentage through an Affidavit of Parentage or court order. A man’s name appearing on a birth certificate does not, by itself, necessarily establish legal parentage. Without legal paternity, a father has no enforceable rights to custody or parenting time, and he carries no legal obligation to pay child support. Knowing when and how to act is critical for any father who wants a meaningful role in his child’s life.

What Is Paternity Under Michigan Law?

In Michigan, paternity is the legal determination of who a child’s father is. It creates enforceable rights and responsibilities for both parent and child.

Michigan distinguishes between biological fatherhood and legal fatherhood. A man can be a child’s biological father without being recognized as the legal father. Legal paternity is established either through marriage, a voluntary acknowledgment, or a court order under the Michigan Paternity Act, MCL 722.711 et seq.

When parents are married at the time of a child’s birth, Michigan law presumes the husband is the legal father. When parents are unmarried, no such presumption applies. Paternity must be established through one of the recognized legal processes before a father can seek custody, parenting time, or be named on official support orders.

How Is Paternity Established in Michigan?

Michigan fathers can establish paternity voluntarily through an Affidavit of Parentage or through a court action filed under the Michigan Paternity Act.

Affidavit of Parentage

The most straightforward path is completing and filing an Affidavit of Parentage, which serves as an acknowledgment of parentage, at the hospital after the child’s birth. Both parents sign the document voluntarily, and it is filed with the Michigan Department of Health and Human Services (MDHHS). Once filed, the AOP carries the same legal weight as a court order.

A father can also sign an AOP after leaving the hospital. Forms are available through MDHHS, the Friend of the Court, or local county health departments. An AOP establishes legal parentage when it is properly completed and filed. Because signing one has significant legal consequences, including waiving certain rights to genetic testing and a trial concerning biological parentage, a father should understand those consequences before signing.

Court-Ordered Paternity

If the parents disagree, or if either party disputes parentage, a paternity action can be filed in circuit court. The court may order genetic testing, and once paternity is confirmed, the judge enters a legal order establishing the father’s rights and responsibilities.

How Long Does a Michigan Father Have to Establish Paternity?

Michigan law generally allows paternity actions to be filed any time before a child turns 18, but waiting creates real legal and practical risks for fathers.

Under MCL 722.714, a paternity action may be commenced during the mother’s pregnancy or at any time before the child reaches 18 years of age, subject to the requirements and limitations of Michigan law. This gives fathers a broad window, but that window does not make delay a safe strategy.

The longer a father waits, the more difficult it becomes to establish a relationship, secure custody, and be part of major decisions about the child’s life. Courts focus on the best interests of the child, and an absent father, even for understandable reasons, may face a harder road to meaningful parenting time.

There is one important limitation to understand. If another man is already legally recognized as the child’s father, a separate legal proceeding to determine or revoke an existing parentage determination may be required before a biological father can assert his rights. These situations are legally complex and time-sensitive.

Can a Father Rescind an Affidavit of Parentage?

An Affidavit of Parentage cannot simply be rescinded by filing a rescission within 60 days. Under Michigan’s Revocation of Parentage Act, a person seeking to revoke an acknowledgment of parentage generally must file a court action within the applicable statutory time limit and establish a legally recognized basis for revocation.

Michigan’s Revocation of Parentage Act governs challenges to an acknowledgment of parentage. Generally, an action must be filed within three years after the child’s birth or one year after the acknowledgment was signed, whichever is later. The person seeking revocation must establish a statutory basis, such as mistake of fact, newly discovered evidence, fraud, misrepresentation, misconduct, or duress. A father who has concerns about biological parentage should seek legal advice promptly because strict statutory deadlines apply.

What Rights Does Establishing Paternity Unlock?

Once paternity is legally established, a father gains access to enforceable legal rights that did not exist before:

  • The right to seek legal or physical custody of the child
  • The right to request a formal parenting schedule
  • The ability to seek legal and physical custody and parenting time, including appropriate decision-making authority through a custody order
  • The ability to have the father’s name added to the child’s birth record when the applicable legal requirements are satisfied
  • The ability to establish inheritance rights for the child

These rights do not appear automatically after signing an AOP or receiving a court order. A father may then seek a custody or parenting time order through the circuit court. The Friend of the Court may assist with certain custody, parenting time, and support matters and may help enforce existing orders.

Why Timing Matters for Michigan Fathers

Establishing paternity early puts fathers in a stronger legal position. Michigan courts determine custody and parenting time based on the child’s best interests and the factors required by Michigan law. A father’s established relationship and involvement in the child’s life can be relevant to those determinations. A father who establishes paternity promptly and stays involved from the beginning builds a record that supports his role in the child’s life.

Delays can complicate everything. The child may develop primary bonds with only one household. Informal arrangements can fall apart. A father who waits may find himself fighting uphill to establish parenting time that a proactive approach could have secured years earlier.

Protecting Your Role as a Father

At ADAM – American Divorce Association For Men, we represent fathers across Michigan who are navigating paternity, custody, and parenting time matters. We understand what is at stake when a father’s relationship with his child hangs in the balance, and we work to protect that relationship through every step of the legal process.

If you have questions about establishing paternity or enforcing your parental rights, contact us or call (248) 290-6675 to speak with our team. Do not wait until the situation becomes more complicated than it needs to be.

Last updated: September 2026