Calabasas Parentage Attorney

A disputed parentage case may involve more than a biological question. Before arranging testing or responding to a claim, identify every declaration, judgment, legal presumption, established family relationship, and related order that may affect the child's legal status.

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Shireen, Stephanie, and the rest of the team are incredibly thorough, efficient, and knowledgeable. I didn't have a question they couldn't answer, and those answers were prompt and detailed whenever I asked them. They always kept my best interests at the forefront and did everything they could to make a difficult time as seamless as possible. I can't recommend their services enough.

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Shireen, Stephanie, Jami and Carlos, and the entire team at Mahdavi & Mahdavi Family Law provided outstanding support, equipping me with the knowledge and options needed to navigate my case effectively. Their dedication, clear guidance, and diligent advocacy made all the difference. I highly recommend their services to anyone seeking knowledgeable and compassionate legal representation. Thanks team!

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When Legal Parentage Is Disputed or Unclear

Begin by identifying what is actually disputed. One person may question biological parentage, while another may dispute the legal effect of a declaration, an existing judgment, a parentage presumption, or a relationship that has already been recognized by the family or court.


The analysis should start with the child's current legal status rather than the result a party expects from genetic testing. A signed declaration or judgment may already exist, and another person may also assert legal parentage.


Collect the relevant documents before taking a position. These may include declarations, birth-related records, prior judgments, assisted-reproduction agreements, genetic-test results, support papers, and custody or visitation orders.

Evaluating disputed legal parentage in Calabasas
Genetic and legal evidence in a Calabasas parentage case

Genetic Evidence, Legal Presumptions, and Existing Relationships

Genetic evidence may be requested or ordered in some contested parentage proceedings. It can help answer a biological question, but a test result does not automatically determine or change every form of legal parentage.


The court may also need to evaluate an existing declaration or judgment, applicable legal presumptions, the circumstances surrounding the child's birth, and any established parental relationship recognized under California law.


If testing is proposed, identify who is requesting it, whether a case has already been filed, what legal status currently exists, and what the requesting party expects the result to change. Do not treat private testing as a substitute for a court order or legal analysis.


Even after parentage is resolved, separate custody, visitation, and child-support questions may remain.

Preparing a Fact-Specific Parentage Case

Identify the claimed legal basis. Determine whether the claim relies on biology, a declaration, a prior judgment, a legal presumption, assisted reproduction, or another recognized basis for parentage.


Build a document chronology. Record when declarations were signed, judgments entered, testing performed, and related custody or support orders issued.


Separate established facts from disputed facts. Distinguish what the parties agree upon from the biological, procedural, or legal questions that still require resolution.


Define the requested result. State whether the party seeks to establish parentage, oppose a claim, review an existing status, or obtain related orders. The evidence and procedure may differ depending on that objective.

Organizing evidence for a Calabasas parentage proceeding
Reviewing a disputed Calabasas parentage claim

What Part of Parentage Is Actually Disputed?

Determine whether the disagreement concerns biology, the validity or effect of a document, an existing judgment, a legal presumption, or the consequences of an established relationship.


Gather the papers that created or may have created legal status before arranging testing or assuming that a biological result will control.


Identify all existing custody, visitation, and support orders because those orders may require separate attention.


Bring the documents and a concise chronology to the consultation so the legal question can be evaluated before a position is filed or signed.

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Clarify the Legal Parentage Question

Share the declarations, judgments, test results, existing orders, and the specific parentage claim being asserted or disputed.

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