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Paternity Attorneys in Houston, TX at Longworth Law Firm
When a child is born outside of marriage, legal parentage is not automatic for the father. Without established paternity, a father has no enforceable custody rights, and a mother cannot obtain court-ordered child support.
At Longworth Law Firm, we help mothers, fathers, and families throughout Houston and Harris County resolve paternity matters with clarity and care. Our Houston paternity lawyer Daryl Longworth brings over 15 years of family law experience and a background few attorneys can offer: 28 years as a Houston Police Lieutenant. A child's identity, financial security, and relationship with both parents can hinge on the outcome of a paternity case. We take that seriously.

What Paternity Establishment Means Under Texas Law
Paternity establishment is the legal process of identifying a child's father for purposes of rights and responsibilities. In Texas, this is governed by Chapter 160 of the Texas Family Code, which follows the Uniform Parentage Act.
The distinction between a biological father and a legal father is important. A man may be the biological parent of a child but have no enforceable legal rights or obligations until paternity is formally established.
Presumed Father vs. Legal Father: Key Differences
Under Texas Family Code Chapter 160, a man is presumed to be the father if he was married to the mother at the time of birth, if he attempted to marry the mother before the child's birth, or if he continuously resided with the child during the first two years of the child's life and represented to others that the child was his. A legal father is a man who has completed one of the recognized legal processes to have his parentage formally recognized by the state, with all accompanying rights and obligations attached.
How Legal Status Affects Your Rights in Court
A presumed father holds a rebuttable legal status. Another man may challenge that presumption, and the presumed father himself may seek to rebut it if he has reason to believe he is not the biological parent. An established legal father has rights and duties that are enforceable in court, including possession, access, and the obligation to pay child support.
How Paternity Is Established in Texas
Texas law provides three main routes to establishing legal fatherhood. Which path applies depends largely on whether both parents are in agreement.
Signing an Acknowledgment of Paternity (AOP)
When both the mother and father agree on paternity, they may sign an Acknowledgment of Paternity form. This document can be signed at the hospital at the time of birth or submitted later through the Texas Vital Statistics Unit. Once filed, the AOP carries the same legal weight as a court order and places the father's name on the birth certificate.
An AOP can be rescinded within 60 days of signing or before a court proceeding, whichever comes first. After that window, challenging an AOP requires proving fraud, duress, or material mistake of fact.
When the Court Orders DNA Paternity Testing

If parents disagree about who the father is, either party can file a parentage lawsuit in the Harris County District Courts or applicable Texas family law courts. The court may then order DNA paternity testing. Cheek swab samples are collected from the potential father and the child, and results typically show a match probability of 99.9% or higher when paternity is confirmed.
If the alleged father refuses a court-ordered DNA test, the court may enter a default order declaring him the legal father. Refusal is not a recognized defense and typically backfires significantly.
Filing for an Order Adjudicating Parentage
This is a formal court order issued after a paternity proceeding. The mother, the alleged father, the child (through a representative), or the Texas Attorney General Child Support Division (OAG) can file a petition. The OAG often initiates these proceedings when a child receives public benefits and there is no established father.
Once the court issues this order, it is binding. Child support, conservatorship (custody), and possession and access can all be addressed in the same proceeding.
Rights and Responsibilities After Paternity Is Established
Establishing paternity is the starting point. What follows has a direct impact on both the father and the child.
Conservatorship: Texas Custody After Paternity Is Set
Texas uses the term "conservatorship" instead of custody. Once paternity is established, a father can pursue either sole or joint managing conservatorship. Courts begin with the presumption that joint managing conservatorship serves the child's best interests, though this can be adjusted based on the facts of the case. Fathers navigating this process often benefit from reviewing how Texas handles child custody arrangements more broadly.
Possession Schedules and Time with Your Child
A father named as a conservator is entitled to a possession schedule. Texas courts typically start with the Standard Possession Order, which sets specific times for the non-primary parent to have the child. This schedule can be modified if circumstances change after the initial order is entered.
Financial Responsibility Once Fatherhood Is Confirmed

Once legal fatherhood is established, both parents share financial responsibility. Child support in Texas is calculated as a percentage of the paying parent's net monthly resources under the Texas Family Code guidelines. The OAG can enforce support orders if a parent fails to pay.
Legal and Financial Protections the Child Receives
Beyond the parent-child relationship, establishing paternity gives the child access to several concrete benefits:
- Inheritance rights: The child may inherit from the legal father under Texas intestate succession laws.
- Health insurance coverage: The child can be added to the father's employer-sponsored or private health insurance policy.
- Social security benefits: The child may qualify for Social Security benefits if the father becomes disabled or passes away.
- Military benefits: The child is eligible if the father serves in the armed forces.
- Family medical history: Access to the paternal side of the child's genetic and medical background, which can be relevant to future healthcare.
Contesting or Disestablishing Paternity in Texas
Not every paternity case is about establishing fatherhood. Sometimes a man listed on a birth certificate is not the biological father, or a presumed father has reason to question the legal connection. Texas law provides a path to challenge paternity, though the rules are strict.
A Presumed Father Who Doubts the Biological Connection
A presumed father may file a Denial of Paternity in conjunction with another man filing an AOP. Outside of that process, challenging a presumed or adjudicated paternity requires filing a petition based on fraud, duress, or material mistake of fact. Texas courts apply a four-year statute of limitations in most paternity challenges, and additional restrictions apply once the child reaches a certain age.
A Biological Father Seeking to Be Recognized by Law
A biological father who is not the legal or presumed father may file a parentage action to be recognized as the legal father. These cases are time-sensitive. Texas law gives priority to family stability, so courts weigh the child's existing relationships when deciding whether to grant a petition from a competing claimant.
Challenging an AOP or Court Order Entered in Error
If a man is being named as a father incorrectly — through an AOP signed under pressure or a mistaken court order — a paternity attorney in Houston can assess whether grounds exist to rescind or challenge that determination. Acting quickly is essential, since the window to contest is narrow.
Establishing Paternity to Secure Child Support for Mothers

For mothers, establishing paternity is often the necessary first step to obtaining financial support for their child. Without a legal father on record, there is no party legally obligated to pay child support, and there is no basis for the court or the OAG to pursue enforcement.
Once paternity is established, child support can be ordered as part of the same proceeding. The OAG Texas provides free paternity establishment services through its Child Support Division, but having your own paternity lawyer in Houston ensures your interests and your child's interests are fully represented throughout the process, not just processed.
What a Paternity Lawyer in Houston Can Do for You
The steps you take in a paternity case, and when you take them, directly shape your rights and your child's future. A paternity attorney in Houston protects your position at every stage, from the first filing through enforcement, whether you are establishing, contesting, or modifying parentage.
- Establish legal fatherhood quickly, so you can begin building enforceable parental rights without delay.
- Petition for conservatorship and possession by filing for custody and a possession schedule in the appropriate Harris County District Court.
- Challenge an incorrect AOP or presumption by identifying grounds to contest and guiding you through the narrow filing window.
- Represent you in a DNA testing proceeding by preparing and presenting your case before the judge.
- Negotiate a workable parenting plan by pursuing an arrangement that reflects your child's needs and your schedule.
- Enforce or modify existing parentage orders when circumstances change after the initial order is entered, including custody modification requests or relocation disputes.
Regardless of which side of a paternity case you are on, the decisions made during the process set terms that can last for years. Our firm helps clients in Houston and across Harris County move through that process with a clear strategy and realistic expectations.
Words From Our Clients
What Sets Longworth Law Firm
Apart in Houston Paternity Cases
Proudly Serving the
Greater Houston Area
Our firm is based in the heart of Houston and represents clients in paternity and family law matters throughout the greater Houston metropolitan area.
- Harris County
- Fort Bend County
- Montgomery County
- Galveston County
- Brazoria County
- Waller County
- Wharton County
Houston Office: 440 Louisiana St, Suite 977 Houston, TX 77002

Frequently Asked Questions
About Houston Paternity Cases
No. When a Texas court orders genetic testing as part of a parentage proceeding, both parties are required to comply. Refusing a court-ordered test can result in contempt of court and may lead the judge to draw adverse conclusions about paternity.
An uncontested case resolved through an Acknowledgment of Paternity can be completed in a matter of weeks. A contested case requiring a DNA test and a court hearing typically takes several months, depending on Harris County court scheduling and whether both parties cooperate.
No. Establishing paternity creates the legal foundation to seek custody, but it does not automatically grant conservatorship or a possession schedule. A father must file separately for those rights, and the court determines the arrangement based on the child's best interests.
In most cases, a paternity action can be filed at any time before the child turns 18. However, challenges to an already-established paternity order are subject to a four-year statute of limitations in many circumstances. Time limits vary by situation, so consulting a paternity lawyer in Houston as early as possible is advisable.
Yes. Posthumous paternity establishment is possible in Texas, typically through DNA testing using samples from paternal relatives or preserved biological material. This is often pursued to secure inheritance rights or government benefits for the child.
Signing the birth certificate in Texas does not by itself establish legal paternity unless an Acknowledgment of Paternity was also signed. If an AOP was signed, there is a 60-day window to rescind it. After that period, grounds for challenge are limited to fraud, duress, or material mistake of fact, and a court order is required to make any change.
Not all cases. The OAG becomes involved primarily when a child receives public assistance or when a party applies for OAG Child Support Division services. Parents can establish paternity privately through an attorney without involving the OAG at all.
Call Our Houston Paternity Legal Team
Paternity decisions shape a child's life and a parent's rights for years. When the stakes are this high, having experienced legal representation in your corner matters. Contact Longworth Law Firm today to schedule a confidential case assessment with a paternity attorney in Houston.
