San Marcos Paternity Attorney
A child’s legal father is not always the man who shows up at the hospital, and in Hays County the gap between biology, a signed form, and a court order can decide who gets to make decisions about a child’s schooling, medical care, and home. The Law Office of Oprea & Weber is an Austin family law firm that handles paternity, SAPCR suits, custody, child support, and related modifications for families in San Marcos, Hays County, and across Central Texas. If you need a San Marcos paternity attorney, the first question is rarely “who is the father?” It is usually “what is my legal status right now, and what can I do about it?”
In Texas, an unmarried father has no enforceable rights to a child, and no enforceable duty of support, until parentage is legally established. A mother can seek child support only from a legally recognized father, and a father can ask for possession and access only once he is one. That establishment can happen through a voluntary acknowledgment, a genetic-testing-backed court order, or a presumption that arises from marriage. Each route has its own deadlines, and some of them close permanently.
How Texas Establishes Legal Fatherhood, and Where Families Get Stuck
Texas recognizes several paths to legal fatherhood. A man is presumed to be the father if he was married to the mother when the child was born, or in some situations shortly before or after. An unmarried father can sign an acknowledgment of paternity alongside the mother, often at the hospital, which has the effect of a legal finding once the rescission window passes. Or a court can adjudicate paternity after a petition is filed, usually with genetic testing if parentage is disputed.
The sticking points are almost always timing and assumptions. A signed acknowledgment can be rescinded within 60 days. After that, a signatory can challenge it only on grounds of fraud, duress, or material mistake of fact, and only before a court order affecting the child has been issued. That is a narrow door. Many fathers sign a form in a hospital hallway believing it can be undone later with a DNA test, and discover it cannot.
A different clock applies when a child already has a presumed father. A proceeding to adjudicate parentage generally must be started by the fourth anniversary of the child’s birth, subject to exceptions such as the presumed father and mother not having lived together or had intercourse during the probable time of conception, or a misrepresentation that kept the presumed father from asserting paternity. Where a child has an acknowledged or adjudicated father, someone who did not sign and wants to contest it faces a similar four-year limit measured from the acknowledgment or adjudication. These deadlines are why an early consultation with a paternity lawyer in San Marcos matters more than in most areas of family law.
Why Choose Oprea & Weber for Paternity Cases
The Law Office of Oprea & Weber is a boutique divorce and family law firm serving San Marcos and the rest of Hays County, along with Travis, Williamson, and Bastrop Counties and the broader Central Texas region. Paternity cases are not a side line for the firm. Paternity and SAPCR suits sit alongside custody, child support, and modification work as core practice areas, and the firm keeps an intentionally manageable caseload so the attorney you meet at the first consultation is the attorney who handles your case through the final order.
Kevin Weber, Attorney, and Karen Oprea, Attorney, both graduated magna cum laude from the University of Michigan Law School. Kevin trained in complex commercial litigation and negotiation at Latham & Watkins in Manhattan, a background that translates directly into the evidence-heavy, deadline-driven nature of contested parentage disputes. He also mediates family law disputes as well as representing clients in mediation, which gives him a practical read on what settlements hold up between parents who will be co-parenting for years. Karen has briefed and argued cases before the Fifth Circuit Court of Appeals, the Texas Court of Criminal Appeals, the Texas Courts of Appeals, and the New York appellate courts, which matters when a parentage question turns on statutory interpretation or a preserved-error problem.
Clients describe the work in consistent terms. One client who came to the firm for a paternity case after using other attorneys wrote that Kevin was “by far the best.” Another, referred for a custody matter, said he “helped hold us steady through a very emotional situation.” Those comments track what the firm aims for: plain-language explanations, direct attorney access, and cooperative resolution where it is realistic, with every case prepared as though it may be tried.
Situations That Bring San Marcos Parents to a Paternity Case
- Unmarried Parents Seeking Child Support: A mother cannot obtain a support order against a man who is not the legal father. A SAPCR suit establishes parentage and sets support together, using the guideline percentages applied to the paying parent’s net monthly resources: 20% for one child, 25% for two, 30% for three, 35% for four, and 40% for five, with at least that amount for six or more, up to a statutory cap on net resources that is adjusted periodically.
- Fathers Who Want Custody or Possession Rights: Biology alone gives a father no schedule. Once parentage is established, the court sets conservatorship and a possession order. For new orders where parents live within 50 miles of each other, the Expanded Standard Possession Order, with Thursday overnights and weekends running through Monday morning, is now the default, which suits many Hays County parents who live in San Marcos, Kyle, or Buda.
- Disputed Parentage and Genetic Testing: When the mother, the presumed father, or an alleged father disagree about who the biological father is, the court can order genetic testing. The legal consequences depend on whether a presumption, an acknowledgment, or a prior adjudication already exists.
- Challenging a Signed Acknowledgment of Paternity: After the 60-day rescission period, a signatory must prove fraud, duress, or material mistake of fact. Whether a particular fact pattern qualifies is a real legal question, not a formality.
- Children Born During a Marriage to Someone Else: A presumed father complicates everything. An alleged biological father generally has to work within the four-year limit and its exceptions, and the presumed father’s rights and the child’s stability are weighed by the court.
- Informal Marriage Questions: Sometimes a couple has lived together long enough that the real question is whether they have an informal marriage. Texas has no minimum cohabitation period, but the couple must have agreed to be married, lived together in Texas as spouses, and held themselves out as married. A proceeding to prove an informal marriage not started within two years of separation faces a rebuttable presumption against it.
- Modifying an Existing Order: A paternity order is not permanent. Child support can be modified after three years if the amount differs from guidelines by 20 percent or $100, or earlier on a material and substantial change. Conservatorship and possession modifications generally require a material and substantial change and the child’s best interest.
- Enforcement and Relocation: When a parent ignores a support or possession order, or one parent wants to move the child, the existing order governs what can happen next.
What to Do If You Need to Establish or Contest Paternity in Hays County
Start by gathering what exists: the child’s birth certificate, any acknowledgment of paternity (and the date it was signed), prior court orders, messages about parentage and support, and records of what the other parent has or has not paid. The date on an acknowledgment is critical, because it controls whether the 60-day rescission window is still open and which challenge standard applies.
Do not assume a handshake arrangement or a verbal child support agreement is enforceable. Without a court order, neither parent can reliably enforce anything. Mothers also should be careful about making informal promises to let an alleged father sign away rights. Fathers should be equally careful about paying support informally and expecting that to translate into visitation rights; it does not.
Family cases arising in San Marcos are filed in Hays County, where the district courts and the Associate Judge for family matters sit in San Marcos. Family law filings go through the Hays County District Clerk, not the county clerk. The district judges listed for the county include Tracie Wright-Reneau (207th), Joe Pool (428th), and Tanner Neidhardt (483rd). If the child lives elsewhere, the correct county may differ, which is a threshold question we sort out early. Parents who live in neighboring counties may find the case belongs in Travis County, where the Civil and Family Courts Facility in Austin hosts the district courts and a Title IV-D child support court, or in Williamson County, whose district courts sit in Georgetown.
If the other parent has been violent or threatening, tell your attorney at the start. A protective order under the Family Code is generally effective for up to two years, with longer terms available in specific circumstances, and it can shape temporary possession orders. Courts also look hard at safety when setting a schedule for a father who has not previously been involved.
Paternity Cases That Turn Into Longer-Term Custody and Support Litigation
Establishing parentage is often the first step in a longer case, not the last. Once a father is legally recognized, the same suit commonly addresses conservatorship, the right to designate the child’s primary residence, a possession schedule, child support, and medical support. Each is decided under a best-interest standard, and the court is not required to split time equally.
Later changes carry their own hurdles. A suit to modify the exclusive right to designate the child’s primary residence filed within a year of the order generally requires a supporting affidavit alleging endangerment, the primary conservator’s consent, or a voluntary relinquishment of primary care for at least six months. A child who is 12 or older can also express a preference to the judge in chambers, which is a statutory ground to modify, not a veto. Courts treat such preferences as one input among many.
Non-parents face a narrower path than they once did. Texas tightened standing for stepparents and other non-parents seeking custody or possession, with the law now focusing on exclusive care, control, and possession. That matters in families where a mother’s new partner has been raising a child while a biological father was absent.
Paternity and SAPCR Questions We Hear From San Marcos Families
Do I need a lawyer to establish paternity in Texas?
Parents who agree on everything can sometimes sign an acknowledgment and use agreed orders, but anything disputed, or anything involving custody and support, benefits from counsel. Because rescission and challenge deadlines are strict, a mistake at the front end can be very hard to repair.
What is a SAPCR?
A Suit Affecting the Parent-Child Relationship is the court case used to establish parentage, set conservatorship, possession and access, and child support for children whose parents are not divorcing. It is the standard vehicle for unmarried parents.
Can I cancel a paternity acknowledgment I signed at the hospital?
Within 60 days of signing, a signatory can rescind it. After that, the only grounds are fraud, duress, or material mistake of fact, and the challenge must come before any court order affecting the child is issued. A later DNA result showing someone is not the biological father does not automatically undo the acknowledgment.
Is there a deadline to challenge paternity?
Yes, and it depends on the situation. When a child has a presumed father, the proceeding generally must begin by the child’s fourth birthday, unless an exception applies. For acknowledged or adjudicated fathers, a non-signatory generally has four years from the effective date of the acknowledgment or adjudication.
Does an unmarried father automatically get visitation?
No. After that, the court applies a best-interest standard and often begins with the standard possession framework.
Can the court order DNA testing?
Yes. In a contested parentage case, genetic testing is a routine part of resolving who the biological father is, though its legal effect depends on any existing presumption or acknowledgment.
If I am the biological father but the mother is married to someone else, do I have a case?
Possibly, but the presumed father’s status and the four-year limit make timing critical. Exceptions exist, including situations where the mother and presumed father did not live together or have intercourse around conception, or where misrepresentation kept the presumed father from acting. These are fact-intensive, and we review them carefully before filing.
Can unmarried parents with a paternity order modify child support later?
Yes. A modification is available when three years have passed and the support amount differs from the guideline figure by 20 percent or $100, or earlier on a material and substantial change in circumstances. If the original support was an agreed amount that departed from the guidelines, the court may modify only on a material and substantial change since the order. Incarceration for more than 180 days also counts as such a change.
Do we have to switch to the Expanded Standard Possession Order if our order is older?
Parents with existing possession orders must file a modification to adopt it. It is the default for new orders where parents live within 50 miles of each other, but it does not automatically replace an older order.
What if we were never married but lived together for years, do we need a divorce?
Only if you had an informal marriage, which requires an agreement to be married, living together in Texas as spouses, and holding yourselves out as married. Without those elements, a SAPCR, not a divorce, is the right vehicle. If a marriage did exist, the 60-day waiting period and community property rules apply.
Can we resolve a paternity case without a trial?
Often, yes. Many parents settle through direct negotiation or mediation, and Kevin Weber’s work as a mediator informs how agreements are structured. Even so, each case is prepared as though it may be tried, which tends to produce better settlements.
Serving Paternity Clients Across San Marcos and Hays County
Our work for families in San Marcos extends throughout Hays County, including Kyle, Buda, Wimberley, Dripping Springs, Driftwood, Mountain City, Niederwald, Uhland, Bear Creek, and Hays itself, as well as the neighborhoods around Texas State University and the corridors along I-35 and Ranch Road 12. We also represent parents in neighboring Travis County, including Austin, Manchaca, and Del Valle; in Williamson County communities such as Georgetown, Round Rock, Cedar Park, and Leander; and in Bastrop County, including Bastrop and Elgin. Paternity disputes tend to involve parents who live in different cities, so we regularly help families work out which county’s court is the proper venue and where the case should be filed.
Talk With a San Marcos Paternity Lawyer About Your Case
If parentage is unresolved, the decisions you make in the coming weeks may close doors that cannot be reopened. Whether you are a mother seeking support, a father seeking recognition and time with your child, or a parent facing a challenge to an existing acknowledgment, The Law Office of Oprea & Weber can walk through your facts, the deadlines that apply, and the options available. Call to schedule a consultation with a San Marcos paternity lawyer and get a clear picture of where you stand.