Maryland Paternity Laws
A paternity question is rarely just a paternity question. It can shape custody, child support, and even inheritance, and the answer often depends on a document or presumption that already exists before anyone requests a DNA test. Here’s how to find out what already applies to your family and what to do next.
What Paternity Means in Maryland
Paternity traditionally refers to the legal determination that a man is a child’s father. Maryland law also uses the broader concept of parentage, which can arise in other ways. Legal parentage can come from a signed Affidavit of Parentage, a court order, or a presumption tied to marriage or a registered domestic partnership, and genetic testing is one tool among several the court can use when that status is disputed.[1][2] You’ll see both “paternity” and “parentage” used in Maryland law. Paternity still appears in the statutes governing proceedings to determine whether an alleged father is a child’s father, while other Maryland laws recognize parentage through marriage, a registered domestic partnership, assisted reproduction, or a voluntary acknowledgment.[2] Biology matters, but it is not the only thing that decides legal parentage. This applies whether you’re unmarried parents deciding whether to sign an affidavit, a parent who was married when the child was born or conceived, or someone trying to understand a status that was established years ago. The right next step depends on what already exists, not just on what a test might show.A DNA Result Doesn’t Automatically Decide Paternity
Many people assume a DNA test is the whole case. It isn’t. A signed affidavit, a prior court order, or a marriage or partnership presumption can already answer the legal question, and each of those carries its own rules for how, or whether, it can be undone.[3][8] That sequence can matter just as much as the lab result. Before you sign an affidavit, request testing, or try to challenge something that’s already in place, you need to know which document or presumption is controlling right now and what it takes to change it. We start by identifying the legal status that exists today. Only once that’s clear does it make sense to talk about what evidence could change it, and what the deadlines and burden of proof actually require.Establishing Paternity in Maryland
When paternity hasn’t already been legally recognized, you generally have two direct paths. Which one fits depends on whether both parents agree, whether anyone questions biological paternity, and whether another legal parent is already recognized.[3]Affidavit of Parentage
When unmarried parents qualify to establish parentage voluntarily, they may sign an Affidavit of Parentage. Once it’s properly executed, the affidavit is a legal finding of parentage, and Maryland requires that parents be told about the legal consequences before they sign, including the benefit of talking to a lawyer first.[3] If there’s a real question about biological paternity, that’s a conversation to have before signing, not after: the standardized affidavit form itself states that the person being named as father has the right to request genetic testing before signing.[9]
Court-Ordered Paternity
When paternity is disputed, the court decides it. The person asking the court to establish paternity carries the burden of proving it by a preponderance of the evidence, and Maryland law allows genetic testing to help make that case.[4][5] If the court finds that the alleged father is the father, it enters an order declaring paternity and providing for child support in the same proceeding, which is why the paternity question and the support question tend to arrive together.[6]
How a Maryland Paternity Case Moves Forward
When paternity is contested and goes through court rather than an affidavit, the sequence generally looks like this.
File or respond
A parent, an alleged father, or the child support agency raises the paternity question with the court.
Genetic testing
The court can order blood or genetic testing, and a lab result showing a 99 percent or greater probability creates a rebuttable presumption of paternity.[5]
Prove the case
The party asking the court to establish paternity has to meet the preponderance-of-the-evidence standard at trial.[4]
Order entered
The court declares paternity and, in the same order, provides for child support.[6]
Establishing, Testing and Challenging Paternity
These pages cover the pathways for putting a legal paternity finding in place and the process for challenging one that’s already there. Unbuilt destinations remain plain text until a live page exists.
Establishing Paternity
A closer look at the affidavit and court routes, and how to decide which one fits your situation.
Challenging Paternity
What it takes to challenge an existing affidavit or court declaration, and the deadlines that control your options.
The 60-Day Window to Rescind an Affidavit of Parentage
A person who signed an Affidavit of Parentage generally has 60 days after signing to rescind it, either by submitting a written rescission or in a judicial proceeding relating to the child in which the signatory is a party.[3] After that window closes, the affidavit may be challenged only in court, and only on the basis of fraud, duress, or a material mistake of fact, with the burden of proof on the person challenging it. Child support obligations generally aren’t suspended just because a challenge is pending.[3] That window is easy to miss if you’re not looking for it, and it decides which options are still available to you. Sixty days from signing feels far away right up until it isn’t.Genetic Testing in Maryland Paternity Cases
A DNA test isn’t required in every case. Parents who qualify can voluntarily establish parentage through an Affidavit of Parentage, and a legal presumption may already apply in some families. Genetic testing becomes especially important once paternity is uncertain or actively contested. In a paternity proceeding, a laboratory report showing at least a 99 percent statistical probability of paternity creates a rebuttable presumption of paternity.[5] That’s powerful evidence, but its legal effect still depends on the posture of the case and whether another parentage rule or prior order already applies. A party may also challenge the validity or reliability of genetic testing if there is a legitimate basis to question the result.
Legal Effect of an Affidavit of Parentage
A signed Affidavit of Parentage isn’t simply an administrative form. It creates a legal finding of parentage, and once that finding exists, it can affect child support and the legal relationship between parent and child.[3] Before you sign, ask yourself a practical question: what happens if this becomes the legal answer tomorrow? If you have doubts about biological paternity, or concerns about someone else who may already have parentage rights, resolve those questions first instead of trying to unwind them later.
Paternity During Marriage or a Registered Domestic Partnership
Maryland presumes that a child born or conceived during a marriage or registered domestic partnership is the child of both spouses or partners.[2] That presumption can affect whether a standard paternity process even applies, and whether genetic evidence alone can resolve the issue. Maryland also limits rebutting some parentage presumptions: in many situations, the court has to decide whether even considering rebuttal evidence serves the child’s best interest before that evidence comes in.[7] A one-size-fits-all DNA answer doesn’t fit these cases.
Paternity and Child Support
Paternity and child support travel together in Maryland. Once a court finds that the alleged father is the father in a paternity proceeding, it must enter an order declaring paternity and providing for support of the child in that same order.[6] The support amount still depends on Maryland’s child support law and your family’s specific facts, so a paternity decision is also, immediately, a financial one, and it’s worth understanding both sides before you sign anything or ask the court to decide.
Why sequence matters
Identify the legal status that exists today first. Then identify what evidence could change it. Only after that should you decide what to file, what to challenge, or what to leave in place.
Paternity Rights for Unmarried Parents and Complex Family Situations
These pages cover how paternity issues play out in specific situations: after the birth certificate is signed, alongside a custody or support case, or when someone wants to contest a result after the fact.
Paternity After Signing the Birth Certificate
What signing the birth certificate does and doesn't establish, and how it interacts with an affidavit or court order.
Paternity and Child Support
How a paternity finding connects directly to a support order and what that means for your finances going forward.
Paternity and Custody Rights
What establishing paternity does, and doesn't, mean for your ability to seek custody or parenting time.
Paternity for Unmarried Parents
The specific options and sequencing questions unmarried parents face when paternity hasn't been legally established yet.
Also in this group: Contesting Paternity After DNA Results | Paternity Fraud / Misattributed Parentage
Paternity Testing, Rights and FAQs
Use these resources to understand how genetic testing actually works and what paternity means as a legal status, separate from the biology question.
How DNA Testing Works in Paternity Cases | What Is PaternityPaternity Doesn’t Decide Custody
Establishing parentage can be an important step toward asking a court for custody or parenting time, but it doesn’t automatically decide legal custody, physical custody, or a schedule. Paternity establishes the legal relationship; Maryland child custody is the separate process that determines how parental decision-making and time with the child actually work once that relationship exists.
Paternity Can Affect an Adoption
Legal parentage can shape whether an adoption can move forward at all, because a recognized legal parent generally has notice, consent, or participation rights that have to be addressed first. If paternity is unresolved, working through it before an Maryland adoption strategy is built can prevent a larger problem later in that process.
Changing an Existing Paternity Order
A court declaration of paternity is generally final. Maryland law allows it to be modified or set aside only in limited circumstances, most notably when qualifying genetic testing excludes the person named as the father, and even then, not if that person acknowledged paternity while knowing he wasn't the biological father.[8] A declaration can also be modified or set aside through the ordinary revisory power a court holds over its own equity orders, a separate and narrower route from the genetic-test-exclusion path.[8] A new DNA result doesn't cancel an existing order on its own. The legal status only changes through the proper court process, on the terms the statute allows.
What we can promise
Not an outcome. What we can promise is a clear picture of what already exists today and what it takes to change it before you decide what comes next.
When Legal Parentage and Biology Do Not Match
Some of the hardest paternity cases are the ones where biology points one way and the existing legal or family relationship points another. A marriage presumption, an Affidavit of Parentage, a prior order, or an assisted-reproduction arrangement can make the legal analysis more complicated than a lab result. That’s where sequence matters most: first identify the legal status that exists today, then identify what evidence could change it, and only after that decide what to file, what to challenge, or what to leave in place.
How Blattner Family Law Group Handles Paternity Cases
Your case is not every case. A paternity question during an amicable co-parenting plan calls for a different sequence than one tangled up with a marriage presumption or a prior order.
Put the legal status in writing
We start by putting the existing legal status in writing: what document or presumption is controlling, and which of your options it has already closed.
Build the plan around what’s next
Paternity questions rarely stop at paternity. We connect the analysis to the custody, support, or adoption issue that follows, so the decision you make now fits the future you actually want.
GET CLARITY ON PARENTAGE
Start with a free case review. Tell us what is happening, what matters most to you, and what you need help deciding. We’ll use that conversation to understand your situation and determine whether we’re the right fit.
Ready to build your plan? Legal advice and case planning take place in a separate $500 attorney strategy session. If you retain the firm, the full $500 is applied toward your retainer.
FAQ
How do I establish paternity in Maryland?
Maryland gives you two direct paths. When unmarried parents qualify to establish parentage voluntarily, they may sign an Affidavit of Parentage, which becomes a legal finding of parentage once it’s properly executed. When paternity is disputed, or another legal parent may already be recognized, a court proceeding is the right route instead. A marriage or registered domestic partnership presumption may already answer the question before you file anything, so the first step is finding out which status already applies to your family.
Do I need a DNA test to establish paternity?
Not always. Genetic testing is especially useful when paternity is uncertain or disputed. Parents who qualify may establish parentage voluntarily without testing, and some families already have a legal parentage presumption.
Can I challenge an Affidavit of Parentage after I signed it?
Yes, but the timing controls your options. You generally have 60 days after signing to rescind the affidavit, either by submitting a written rescission or in a judicial proceeding relating to the child in which you are a party. Once that window closes, the affidavit may be challenged only in court, and only on the basis of fraud, duress, or material mistake of fact, with the burden of proof on you. That’s a narrow path, which is why the 60 days matter more than most people realize.
Does establishing paternity automatically give me custody?
No. Establishing parentage can create the legal relationship needed to pursue parental rights, but custody and parenting time are separate issues that must be resolved by agreement or court order.
Can child support be ordered in a paternity case?
Yes. If the court finds that the alleged father is the father in a paternity proceeding, Maryland law directs the court to enter an order declaring paternity and providing for child support.
What if the mother was married when the child was conceived or born?
A Maryland parentage presumption may apply. That can make the case more complex than a standard unmarried-parent affidavit, especially if biological and legal parentage point in different directions.
Can a private DNA test cancel an existing paternity order?
No. A new DNA result does not erase an existing order on its own. Maryland law provides limited court procedures for modifying or setting aside a paternity declaration.
What if paternity is connected to an adoption?
Resolve the parentage issue early. A legal parent may have rights that affect notice, consent, and the adoption process, so paternity and adoption strategy should be coordinated.
HERE’S A QUICK SUMMARY
Paternity is a legal status with consequences beyond biology.
Start With the Legal Status
Find out whether an affidavit, court order, marriage presumption, or other parentage rule already applies before choosing a strategy.
DNA Is Evidence, Not the Whole Case
Genetic testing can be decisive in a contested paternity case, but it does not automatically erase a legal presumption or prior order.
Plan for What Comes Next
Paternity can lead directly to custody, parenting time, support, or adoption issues. Build the next step into the strategy from the start.
TALK TO A MARYLAND PATERNITY LAWYER
Facing a paternity issue can affect more than legal parentage. Blattner Family Law Group helps Maryland parents understand how paternity may affect custody, parenting time, child support, and related family law issues.
Our Maryland family law attorneys can review the facts and explain the available next steps. Start with a free case review to discuss what matters to you and whether we’re the right fit. If you’re ready for legal advice and case planning, the next step is a $500 attorney strategy session, and the full $500 is applied toward your retainer if you hire the firm. You can also visit one of our Maryland office locations.
Sources
- [1] Maryland Department of Human Services, Paternity Establishment | https://dhs.maryland.gov/child-support-services/parents-and-caregivers/establish-paternity/
- [2] Maryland Code, Estates and Trusts § 1-206, Presumptions of Parentage | https://mgaleg.maryland.gov/2026RS/Statute_Web/get/1-206.pdf
- [3] Maryland Code, Family Law § 5-1028, Affidavit of Parentage | https://mgaleg.maryland.gov/2026RS/Statute_Web/gfl/5-1028.pdf
- [4] Maryland Code, Family Law § 5-1027, Burden of Proof in Paternity Proceedings | https://mgaleg.maryland.gov/2026RS/Statute_Web/gfl/5-1027.pdf
- [5] Maryland Code, Family Law § 5-1029, Blood and Genetic Testing | https://mgaleg.maryland.gov/2026RS/Statute_Web/gfl/5-1029.pdf
- [6] Maryland Code, Family Law § 5-1032, Paternity and Support Order | https://mgaleg.maryland.gov/2026RS/Statute_Web/gfl/5-1032.pdf
- [7] Maryland Code, Estates and Trusts § 1-208.1, Rebutting Parentage Presumptions | https://mgaleg.maryland.gov/2026RS/Statute_Web/get/1-208.1.pdf
- [8] Maryland Code, Family Law § 5-1038, Modification or Setting Aside a Paternity Declaration | https://mgaleg.maryland.gov/2026RS/Statute_Web/gfl/5-1038.pdf