Paternity & DNA Testing Lawyers Helping Clients Navigate California Paternity Matters
Orange County Paternity Lawyers: Establishing Parentage and DNA Testing in California
Until a child’s legal parents are established, a father has no enforceable right to custody or visitation, a mother has no enforceable right to child support, and the child has no legal claim to the benefits, inheritance, and identity that come from having two recognized parents. California law now uses the broader term parentage, and the same rules apply whether the parent seeking recognition is a father, a mother, or a spouse who did not give birth. For most Orange County families, though, the question is still the one people ask about paternity: how do we make a father’s relationship with his child legal?
At Sarieh Family Law, we help parents establish parentage through the Voluntary Declaration of Parentage, through court actions with DNA testing, and, when the facts require it, we help parents challenge a claim of parentage that is not accurate. We know these cases are emotional for everyone involved. Our job is to make the legal path clear and to protect the relationship between you and your child. Contact our Costa Mesa office to schedule a free 45-minute case evaluation.
Why Establishing Parentage Matters
Parentage is the legal foundation for every other right and obligation between a parent and a child. Once parentage is established under California law, the following become available:
- Custody and visitation. Under Family Code section 3010, both legal parents are equally entitled to custody of their child. Until parentage is established, an unmarried father cannot ask the court for custody or visitation orders, and the mother has no order to enforce against him.
- Child support. A parent’s duty to support a child depends on legal parentage. Once it is established, the court applies the statewide uniform guideline in Family Code sections 4053 and 4055 to calculate child support based on both parents’ incomes and the time each spends with the child.
- Inheritance. Under Probate Code section 6453, a child inherits from a parent through intestate succession when a parent-child relationship exists under the Uniform Parentage Act, including through an unrebutted presumption of parentage.
- Benefits. A legal parent-child relationship is generally required for a child to receive Social Security dependent or survivor benefits, veterans’ benefits, health insurance coverage through a parent’s employer, and life insurance or retirement benefits payable to a parent’s children.
- Medical history. Knowing both biological parents gives a child and the child’s doctors access to family medical history, including hereditary conditions.
- Identity and the birth certificate. Establishing parentage allows a father’s name to be added to the child’s birth record and gives the child the security of knowing who both parents are.
How Parentage Is Established Under California Law
California’s Uniform Parentage Act, found in Family Code sections 7600 and following, recognizes several routes to legal parentage. Which one applies depends on whether the parents were married, whether they signed a declaration, and whether anyone disputes the child’s parentage.
| Route to Parentage | Who It Applies To |
|---|---|
| Conclusive marital presumption | A child born to spouses who were living together at the time of conception and birth |
| Presumed parent by marriage | A person married to the child's mother when the child was born, or within 300 days after the marriage ended |
| Presumed parent by conduct | A person who receives the child into their home and openly holds the child out as their own |
| Voluntary Declaration of Parentage | Unmarried parents who both sign the state form, at the hospital or later |
| Court judgment | Any parent, child, or agency who files a parentage case, usually with genetic testing if disputed |
Two points from this table surprise many clients. First, a married couple living together when a child is conceived and born does not need a paternity action at all; Family Code section 7540 conclusively presumes the child is a child of the marriage, with a narrow exception for a husband whom a court finds was impotent or sterile, and section 7541 allows that presumption to be challenged with genetic testing only within two years of the child’s birth. Second, California does not use the phrase parentage by estoppel, a term that appears on some websites. The equivalent concept here is the presumed parent under section 7611(d): a person who has welcomed the child into the home and openly held the child out as their own can be a legal parent even without a biological connection, and under section 7612 that presumption can be rebutted only by clear and convincing evidence.
The Voluntary Declaration of Parentage
For unmarried parents who agree about the child’s parentage, the simplest route is the Voluntary Declaration of Parentage, a form administered by the California Department of Child Support Services. Family Code section 7571 requires hospitals to offer the declaration to unmarried parents at the time of birth, and parents can also sign it later at a child support agency, a family law facilitator’s office, or another authorized location. Once signed by both parents and filed with the Department, the declaration has the same force and effect as a judgment of parentage under Family Code section 7573, and the father’s name can be placed on the birth certificate.
Because the declaration carries the weight of a judgment, the law builds in a short window to reconsider. Under Family Code section 7575, either parent may rescind the declaration by filing a rescission form with the Department within 60 days of the date the declaration was signed by the later-signing parent, unless a court has already made an order for custody, visitation, or child support based on it. After the 60 days pass, Family Code section 7576 allows a signing parent to challenge the declaration only on the grounds of fraud, duress, or material mistake of fact, and only within two years of the declaration’s effective date. Genetic test results alone are not a stand-alone ground to undo a declaration after the rescission window, which is why we urge anyone with doubts about a child’s parentage to obtain testing before signing rather than after.
The declaration is only available in specific circumstances, generally where the mother was unmarried and the person signing is the only possible genetic parent, or where the signer is an intended parent of a child conceived through assisted reproduction under Family Code section 7613. If the mother was married to someone else when the child was born; in that situation a court case may be required. Our article on the Voluntary Declaration of Paternity in California discusses the form in more detail.
DNA Testing in California Paternity Cases
When parentage is disputed, genetic testing usually resolves the biological question. Under Family Code section 7551, in any civil case where parentage is a relevant fact, the court may order the mother, the child, and the alleged parent to submit to genetic tests, and it must do so on the motion of any party. The test is a painless cheek swab, typically collected under a documented chain of custody, and analyzed by a laboratory accredited under the standards described in Family Code section 7552. Home test kits purchased online do not meet these standards and are generally not admissible.
Family Code section 7555 provides that a person is identified as a genetic parent when the test results meet the statutory thresholds, including a combined relationship index of at least 100 to 1 and a probability of parentage of at least 99 percent. Modern laboratories routinely report results far above these thresholds, so a properly conducted test is close to conclusive in practice. Refusing a court-ordered test has consequences: under Family Code section 7551, the court may resolve the question of parentage against the party who refuses. When the local child support agency orders testing in its own case, Family Code section 7558 requires the agency to pay for the test, and the county may seek reimbursement by court order from a father whose parentage is established; in private cases section 7558 does not apply, and who pays is a matter for the parties to agree on or ask the court to address.
| DNA Testing Question | California Rule |
|---|---|
| Can the court order a test? | Yes; the court may order testing and must do so on any party's motion |
| What kind of test counts? | Testing by a laboratory accredited under the statutory standards (reputable labs also document chain of custody as standard practice) |
| What result establishes parentage? | A person is identified as a genetic parent at a combined relationship index of 100 or greater and a probability of parentage of 99 percent or higher |
| What if a party refuses? | The court may resolve the parentage question against the refusing party |
| Who pays? | The local child support agency pays for testing it orders in its cases, subject to reimbursement by court order; in private cases, the parties agree or ask the court to address cost |
Filing a Parentage Case in Orange County
When parents do not agree, or when a declaration is not available, parentage is established through a court case. Family Code section 7630 gives standing to file to the child, the mother, a presumed parent, and, in limited circumstances (for example, when the mother is the only presumed parent), a man who alleges he is the father. The local child support agency can also open a parentage case, and many Orange County parentage matters begin when a parent applies for services through California Child Support Services.
A private case begins with the Petition to Determine Parental Relationship (form FL-200), served with a Summons (form FL-210) and, because custody will be at issue, a Declaration Under UCCJEA (form FL-105). The other parent responds with form FL-220. If parentage is disputed, either side asks the court to order genetic testing. Once parentage is determined, Family Code section 7637 allows the judgment to include orders for child support, custody, visitation, and even the reasonable expenses of the mother’s pregnancy and birth, so a single case can resolve every issue between the parents. Temporary custody, visitation, or support orders while the case is pending are requested through a request for order.
Parentage cases in Orange County are heard in the family law division of the Orange County Superior Court, which publishes helpful guidance on its parentage page. The court will not make custody, visitation, or support orders for an unmarried couple until parentage has been established, which is why filing promptly matters when a parent is being denied time with a child or is not receiving support.
Challenging or Disestablishing Paternity
Sometimes the problem is not proving parentage but undoing a mistaken finding. California law provides limited and time-sensitive remedies:
- Marital presumption. Under Family Code section 7541, the conclusive presumption for a child born to cohabiting spouses may be challenged with genetic testing only in an action filed within two years of the child’s birth by a spouse, a presumed parent, or the child.
- Voluntary Declaration of Parentage. Within 60 days, either parent may rescind under section 7575. After that, section 7576 permits a challenge for fraud, duress, or material mistake of fact within two years of the declaration’s effective date.
- Judgment of paternity. Under Family Code section 7646, a previously established father may move to set aside a paternity judgment based on genetic testing, generally within two years of the date he knew or should have known of the judgment or of a pending parentage action. This remedy does not apply to children covered by the marital presumption or conceived through assisted reproduction.
- Rebuttable presumptions. A presumption under section 7611 may be rebutted in an appropriate action by clear and convincing evidence, and where two or more presumptions conflict, section 7612 directs the court to follow the presumption founded on the weightier considerations of policy and logic.
These deadlines are unforgiving. A man who suspects he is not a child’s biological father should seek legal advice immediately rather than waiting for a support order to arrive. Conversely, a parent defending an established relationship should know that California courts weigh the child’s interest in a stable parent-child relationship heavily; in some cases, Family Code section 7612(c) even allows a court to recognize more than two legal parents where recognizing only two would be detrimental to the child.
Rights of Unmarried Fathers After Parentage Is Established
Once parentage is established, an unmarried father has the same legal standing as a married father. He may request joint or sole legal and physical custody, a parenting schedule, and orders regarding the child’s school, medical care, and travel, and the court decides those requests under the same best-interest standard that applies in divorce cases. He also takes on the same obligations, including guideline child support and a share of the child’s health care and child care costs. Our article on the rights of unmarried fathers in California explores these issues further, and our California child support calculator can give you a preliminary sense of guideline support.
Parents who conceived through assisted reproduction have their own set of rules. Under Family Code section 7613, a person who consented in writing to assisted reproduction with the intent to be a parent is treated as a natural parent, and a sperm donor who provided semen through a licensed physician or sperm bank is not a parent unless he and the birth mother signed a written agreement before conception that he would be, and an egg donor is not a parent unless the court finds that the donor and the recipient intended the donor to have parental rights. If your family was formed this way, we can help you confirm that both intended parents are legally recognized.
Why Orange County Parents Choose Sarieh Family Law
Attorney Wail Sarieh, the founder of Sarieh Family Law, is a Certified Family Law Specialist certified by the State Bar of California Board of Legal Specialization. He holds a Juris Doctorate from Loyola Law School in Los Angeles and a medical degree from Aleppo University, a background that is unusually useful in cases that turn on genetic testing and medical evidence. For more than 20 years he has represented parents in paternity, custody, and support matters in the Orange County Superior Court, and he is admitted to practice in the California state courts and the United States District Court for the Central District of California.
Attorney Jennifer Axelrod, a member of the State Bar of California since 2004, has extensive experience litigating child custody and support disputes, including cases involving unmarried parents. Attorney Justin Snell brings more than 15 years of legal experience and an LL.M. in Taxation, which matters when support calculations involve self-employment or complex income.
Our experience with unmarried parents runs deep. In a matter described on our case results page, we represented the father of two children whose parents had lived together for over a decade without marrying. When the mother claimed she was unable to work, Mr. Sarieh obtained a vocational evaluation, subpoenaed her workers’ compensation medical records, and cross-examined her physician at trial. The court found that she was able to work, imputed income to her, and calculated child support accordingly. We share this as an example of how these cases are actually litigated, not as a promise of any particular result. From our Costa Mesa office we represent parents throughout Orange County.
Talk to an Orange County Paternity Attorney Today
Whether you are a father seeking a legal relationship with your child, a mother who needs support and a reliable co-parent, or a parent who has doubts that need to be resolved, Sarieh Family Law can guide you through California’s parentage laws with clarity and compassion. Contact our Costa Mesa office to schedule your free 45-minute case evaluation.
