Checklist · Family Law

Establishing or Contesting Parentage: A Practical Checklist

42 U.S.C. § 666

Type
Checklist
Jurisdiction
National
Date
2024-07-26
Topic
Family Law

This checklist runs a parentage matter from the hospital through the judgment, in ten phases. Phase 1 is the decision at birth, which is where most avoidable damage occurs. Phase 2 covers establishing parentage against resistance, and Phase 3 covers defending against an incorrect establishment. Phase 4 covers genetic testing and what it does and does not decide. Phase 5 covers disestablishment and the questions to ask before filing. Phase 6 covers assisted reproduction and surrogacy, where the paperwork is the parentage. Phase 7 covers securing a parentage that already exists, and Phase 8 covers the default judgment problem. Phase 9 covers the collateral filings a new parentage requires, and Phase 10 covers the practitioner's intake. Model letters, a deadline table, a division of responsibility, and a ranked failure-mode list are included.

Establishing or Contesting Parentage: A Practical Checklist

Family Law > Parentage | Published 26 July 2024 - Updated 22 November 2025 | UpLaw - uplaw.us

Phase 1 takes five minutes and prevents most of what follows. A form signed in a hospital has the force of a judgment, and the window to undo it is measured in weeks.

The narrative is Who Counts as a Parent: How Parentage Is Established, Presumed, and Undone. The doctrine is Establishing and Disputing Parentage: A Comprehensive Guide to Presumptions, Acknowledgments, and Genetic Testing. The forms are in The Parentage and Paternity Toolkit.

Phase 1 — At the hospital

☐ Understand what the acknowledgment form is. Under 42 U.S.C. § 666, a completed acknowledgment is treated as equivalent to a judicial determination of parentage. It is not paperwork. It is a judgment.

☐ Ask two questions before signing:

  • ☐ Is there any possibility this child is not biologically mine?
  • ☐ Is the mother married to, or recently married to, anyone else? If so, a marital presumption may already exist, and the acknowledgment may require a denial of parentage from the presumed parent to be effective.

☐ If the answer to the first is yes — do not sign today. Say: "I'd like to complete this after a genetic test." The acknowledgment can be signed next week. The rescission window cannot be reopened next year.

☐ If signing, note the date. Write it down. Photograph the form.

☐ Calendar the rescission deadline — the earlier of the statutory period, commonly 60 days, or the date of the first administrative or judicial proceeding relating to the child in which you are a party.

☐ Confirm the form was actually filed with the state vital records registry. An unfiled acknowledgment may not have the intended effect.

☐ Get a certified copy of the birth certificate once issued.

☐ Understand what the birth certificate is not. It is an administrative record. It is not a judgment, and a judgment is what travels between states.

Phase 2 — Establishing parentage against resistance

☐ Open a case with the state child support agency. It costs nothing, and federal law requires states to provide the machinery — 42 U.S.C. § 654, 42 U.S.C. § 666, funded through 42 U.S.C. § 652.

☐ Or file a parentage petition directly, which gives more control over custody and parenting time.

☐ Plead the route, not the conclusion. State the statutory basis: presumption, acknowledgment, holding out, genetic connection, or consent to assisted reproduction. A petition that says only "petitioner is the father" invites a standing challenge.

☐ Name any presumed parent as a party. A judgment entered without them is vulnerable.

☐ Request genetic testing by sworn statement.

☐ If the other parent cannot be located, ask the agency to use the Federal Parent Locator Service — 42 U.S.C. § 653. It searches employment, tax, and benefits records and is far more effective than private searching.

☐ Use publication only as a last resort. A judgment on publication is easier to set aside later.

☐ If you are an unwed father and no case exists yet — register with the putative father registry NOW, in every state where conception or birth may have occurred. The window is often 30 days or before an adoption petition is filed, and failure generally forfeits the right to notice of an adoption — Lehr v. Robertson, 463 U.S. 248 (1983).

☐ Document the relationship from today forward: support provided, contact attempted, messages sent. Every doctrine in this area rewards the person who acted.

Phase 3 — Defending against an incorrect establishment

☐ APPEAR. The most common route to an incorrect parentage judgment is a default.

☐ Do not admit parentage in any document until testing is complete.

☐ Demand genetic testing in writing, on the record, before any hearing.

☐ Do not sign an acknowledgment "to help out," "to get the birth certificate finished," or "so she can get benefits."

☐ Know the burden. A preponderance of the evidence in most states — Rivera v. Minnich, 483 U.S. 574 (1987) — not clear and convincing.

☐ If you cannot afford testing and the state has made it central to the case, say so on the record — Little v. Streater, 452 U.S. 1 (1981).

☐ Ask for a continuance rather than defaulting if you cannot attend.

☐ Keep every notice you receive, with the envelope.

☐ If you are represented by no one, read Representing Yourself in Civil Court: A Comprehensive Guide for Self-Represented Litigants.

Phase 4 — Genetic testing

☐ Understand what a test decides and what it does not. It answers a biological question. It does not automatically answer the legal question of who a child's parents are.

☐ Where a presumption already exists, testing is discretionary in many states. Courts may deny it where testing would not serve the child's interests — considering the length of the relationship, the child's age, harm from disruption, and the petitioner's diligence.

☐ Request testing through the court, not informally. A court-ordered test with documented chain of custody is admissible; a home kit frequently is not.

☐ Confirm the chain of custody — identification checked, collection witnessed, tamper-evident packaging, accredited laboratory.

☐ Ask for the full report, including the probability of parentage and the tested loci.

☐ If the other party refuses an ordered test, ask for the adverse inference or default the statute permits.

☐ A consumer ancestry test is a starting point, not evidence. If it triggered the question, confirm through a court-ordered test before filing anything.

Phase 5 — Disestablishment

Before filing, answer three questions honestly.

☐ 1. What is the goal? Ending future support, ending the relationship, or establishing a truth. These are different goals with different costs, and the petition serves only some of them.

☐ 2. What happens to the child? One legal parent, reduced household income, and frequently no substitute father — because the biological father may be unknown, unavailable, or judgment-proof.

☐ 3. What does the existing case need? In a custody dispute, a long parenting history is an asset. Converting yourself into a non-parent forfeits it.

Then run the elements.

☐ Standing under the statute — who may challenge a presumed or acknowledged parent, and when ☐ Timeliness — the rescission window (commonly 60 days), then the fraud-duress-mistake window (frequently capped at two years) ☐ A ground — fraud, duress, or material mistake of fact ☐ Diligence — that you acted promptly on learning the facts ☐ The child's best interests, which a growing number of states require

☐ Understand "material mistake of fact." If you knew there was a possibility and signed anyway, most courts hold there was no mistake — there was an assumption of risk. This single rule disposes of most petitions.

☐ Expect a guardian ad litem for the child, and request one yourself if the court does not.

☐ Understand what survives success. Disestablishment usually operates prospectively. Arrears remain owed, and a state public-assistance reimbursement claim is frequently unaffected.

☐ Support does not pause during the challenge.

Phase 6 — Assisted reproduction and surrogacy

In this Phase, the paperwork is the parentage. There is no biological fact to fall back on.

6A — Donor conception

☐ Use a licensed physician where the state's donor protection depends on it. ☐ Written agreement before conception, signed by everyone — donor, recipients, spouses. ☐ State expressly that the donor is not a parent and will have no rights or obligations. ☐ ⚠ Known donor, home insemination, no agreement is the riskiest configuration in family law. The donor may be a legal parent with support obligations and custody rights. ☐ If the donor will have contact with the child, address it in writing — holding-out and de facto doctrines may operate notwithstanding the agreement.

6B — Intended parents

☐ Written consent to assisted reproduction, signed by both intended parents, BEFORE conception. ☐ Keep the clinic's consent forms — they frequently double as the statutory record. ☐ A withdrawal of consent before transfer generally ends parentage; after transfer, generally not.

6C — Surrogacy

☐ Identify the governing state BEFORE any medical procedure. State law ranges from full validation with pre-birth orders to statutes voiding the agreement entirely. ☐ Determine where the birth will occur, and whether pre-birth orders issue there. ☐ Independent counsel for the surrogate, paid by the intended parents — in several states a validity requirement, not a courtesy. ☐ Medical and mental-health evaluations completed. ☐ Agreement executed before any medical procedure. ☐ Address: medical decision-making, health and life insurance, compensation, multiple gestation, termination decisions, and disposition if the intended parents die or separate. ☐ File for the parentage order pre-birth or immediately after. ☐ If the child will cross state lines, confirm interstate compact compliance — non-compliance can void a placement. ☐ Genetic (traditional) surrogacy is restricted nearly everywhere, and frequently requires a post-birth revocation period and an adoption.

Phase 7 — Securing a parentage that already exists

☐ Ask the portability question: is this status a judgment, or an administrative record?

Instrument Travels between states?
Adoption decree Yes — a judicial proceeding
Parentage adjudication Yes
Acknowledgment after the window Generally yes, as a judicial determination
Birth certificate under a presumption Not reliably
De facto or functional status Rarely

☐ If the family rests on a presumption or a functional doctrine, obtain a judgment. Confirmatory adoption, second-parent adoption, or a parentage adjudication all produce one.

☐ Married same-sex couples: both spouses belong on the birth certificate — Pavan v. Smith, 582 U.S. 563 (2017) — and the non-birth parent should still complete a confirmatory adoption. It costs a few thousand dollars and is the cheapest insurance in family law.

☐ Complete the supporting documents:

Phase 8 — The default judgment problem

☐ First question: what is the date of the judgment? Not the biology. The date.

☐ Pull the service record. Where was the summons sent? Who signed? Was it publication?

☐ Move promptly. Relief depends on the state's rule for setting aside judgments, and windows are short.

☐ Be prepared to show both excusable neglect and a meritorious defense in most states.

☐ Understand that arrears frequently survive even a successful vacatur, particularly where the state has a public-assistance reimbursement claim.

☐ Do not stop paying while the motion is pending. Enforcement continues, and support obligations are not dischargeable in bankruptcy — 11 U.S.C. § 523.

☐ Check what is being garnished. Some federal benefits are protected from ordinary creditors under 42 U.S.C. § 407 but not from support enforcement.

Phase 9 — After a parentage order

☐ Obtain certified copies of the judgment — several.

☐ Amend the birth certificate through vital records, per the order's directions.

☐ Update the Social Security record — 42 U.S.C. § 405.

☐ Confirm custody and parenting time are addressed or expressly reserved.

☐ Confirm the support effective date.

☐ Confirm findings on custody jurisdiction, which the next court will need — 28 U.S.C. § 1738a.

☐ Address immigration filings if status depends on the parentage — definitions at 8 U.S.C. § 1101; citizenship at 8 U.S.C. § 1401 and 8 U.S.C. § 1409.

☐ Update school and medical records.

☐ Update estate documents.

Phase 10 — Practitioner intake

☐ Marital status at conception and at birth, with dates ☐ Whether an acknowledgment was signed — by whom, when, whether filed ☐ Whether any court has entered an order naming a parent, including a default support order ☐ Whether genetic testing has occurred, and who arranged it ☐ Who has been living with the child, and since when ☐ Whether the child was conceived through assisted reproduction, and with what paperwork ☐ Whether the child may be an Indian child — 25 U.S.C. § 1912, 25 U.S.C. § 1915. Ask in every case ☐ Whether any adoption is pending or contemplated ☐ Every state the child has lived in ☐ Immigration status of child and parents ☐ Whether a dependency case exists — 42 U.S.C. § 671 ☐ Every applicable deadline, calendared at intake

The deadline table

Deadline Typical window Runs from Consequence
Rescind an acknowledgment 60 days or first proceeding Signing Free exit closes
Challenge for fraud, duress, mistake Often 2 years Signing or discovery The only remaining ground
Challenge a marital presumption Often 2 years Birth or discovery The presumption becomes final
Putative father registration 30 days or less, or before an adoption petition Birth Right to notice of adoption
Set aside a default judgment Short civil rule Entry or notice The judgment stands
Establish parentage, no presumed parent Frequently open to majority — —
Surrogacy agreement execution Before any medical procedure — Validity
Assisted reproduction consent Before conception — Intended-parent status
Interstate compact approval Before the child moves — Placement may be void

Who does what

The parents, at the hospital. Phase 1. Five minutes, and it prevents most of what this checklist otherwise has to fix.

The unwed father, immediately. Putative father registration, and documented contact and support from the first day he knows.

The state child support agency. Location, testing, and establishment — at no cost to the applicant. An underused public service.

Family counsel, at intake. Phase 10, and the deadline table. Both take twenty minutes and determine what is still possible.

Reproductive counsel, before conception. Phase 6. There is no biological fallback, and every failure in this Phase happens before anyone is pregnant.

A guardian ad litem, wherever the child's interests diverge from both adults'.

An estate planner, once status is settled, to name children individually and update beneficiary designations.

Failure modes, ranked

  1. Signing an acknowledgment where biology is uncertain.
  2. Missing the rescission window.
  3. Defaulting in a support-driven parentage case.
  4. Failing to register with a putative father registry.
  5. Relying on a birth certificate as proof of status across state lines.
  6. Known-donor conception with no written agreement and no physician.
  7. Waiting years to assert parentage, and losing standing — Lehr v. Robertson, 463 U.S. 248 (1983).
  8. Assuming a genetic test resolves legal status.
  9. Filing a disestablishment petition without asking what happens to the child.
  10. Surrogacy arranged without identifying the governing state before the medical process.
  11. Failing to name a presumed parent as a party.
  12. Failing to ask the Indian Child Welfare Act question at intake.
  13. Not obtaining a confirmatory adoption for a family formed by presumption.
  14. Not updating wills and beneficiary designations after a parentage order.

Items 1 through 4 all happen in the first sixty days, mostly to people who did not know they were deciding anything.

Model communications

To a hospital staff member presenting an acknowledgment

"Thank you. Before I sign, I'd like to confirm two things: whether genetic testing is available first, and whether the mother is currently or was recently married to anyone else. I understand this form is treated as a court determination, so I'd like to complete it after I have those answers. Can you tell me how to complete it later if I don't sign today?"

Requesting genetic testing in a pending case

"I am requesting that the court order genetic testing in this matter before any adjudication of parentage. I have not admitted parentage and I do not admit it now. I ask that the testing be court-ordered with documented chain of custody through an accredited laboratory, and that the results be provided to all parties. If cost is an obstacle, I ask the court to address allocation."

Notifying a state agency of a wrong-person default judgment

"I am writing about case number [____], in which a judgment establishing parentage and support was entered against me on [date]. I was not served at an address where I was living at that time; the summons was sent to [address], where I have not resided since [date]. I did not appear and did not learn of the judgment until [date], when [how you learned].

I am requesting: (1) a copy of the complete file, including the return of service; (2) genetic testing; and (3) information about the procedure for moving to set aside the judgment. I understand that support continues to accrue and I am not asking that enforcement be suspended informally."

Requesting a putative father registration confirmation

"I am requesting confirmation of my registration with the putative father registry, filed on [date] regarding a child born or expected to be born on or about [date] to [mother's name] in [county, state]. Please confirm receipt and provide a copy of the registration for my records."

To a known donor, before conception

"Before we go forward, I want to make sure we all have the same understanding in writing. We're proposing an agreement that says you are a donor and not a legal parent, that you will have no support obligations and no custody or visitation rights, and that we will use a licensed physician for the procedure. We'd each have our own lawyer review it. I know this feels formal between friends — the formality is what protects all three of us, and the alternative is that a court decides it later without any of our input."

What the evidence actually looks like

Parentage cases are decided on relational facts far more often than on laboratory reports, and the evidence that persuades is ordinary.

For a holding-out or de facto claim, courts want:

☐ Photographs across years, not a handful from one holiday ☐ School records listing the person as a parent or emergency contact — 20 U.S.C. § 1232g ☐ Medical records showing who brought the child and who consented ☐ Testimony from third parties — teachers, coaches, pediatricians, neighbors, relatives — describing what they observed ☐ Financial records showing support: insurance, tuition, childcare, groceries ☐ The child's own understanding, developed through a guardian ad litem or an in-camera interview ☐ Communications using parental language over time

For a challenge to an established parentage, courts want:

☐ When the petitioner first had reason to doubt, and what they did about it ☐ Contemporaneous communications at the time of the acknowledgment or birth ☐ Whether testing was discussed and declined ☐ The petitioner's conduct since — did they continue parenting after the doubt arose?

The asymmetry to keep in mind: a case built on a genetic report and two parties' testimony usually loses to one built on eleven people describing a childhood. Prepare the relational record first.

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