While the goal in most paternity lawyer in Orange County cases is to establish parentage, there are critical legal pathways for contesting or disestablishing paternity, both of which require precise adherence to strict California family law procedures. A father may contest paternity if he has doubts about his biological relationship, or, in complex cases, seek to disestablish it long after a VDP or court order was issued, particularly if evidence of fraud or mistake comes to light.

Contesting Paternity in a Pending Case

Contesting paternity occurs when an alleged father is named in a Petition to Establish Parental Relationship (FL-200) or served with a Voluntary Declaration of Paternity (VDP), and he disputes the claim.

• VDP Revocation: As noted, the simplest way to contest a VDP is within the 60-day revocation period. A father must simply sign the appropriate form and file it with the Parentage Opportunity Program. Failure to act within this narrow window makes the VDP binding as a court order.

• Court Litigation: If served with a Summons and Petition (FL-200), the alleged father must file a timely Response (FL-220) indicating he denies paternity. This denial immediately triggers the court order for genetic testing. A paternity lawyer in Orange County ensures the testing is properly conducted, the chain of custody for the samples is maintained, and the results are accurately reported to the court before the judge makes any ruling on parentage, custody, or support.

The Challenging Process of Disestablishment

Disestablishment refers to legally undoing an existing, established finding of paternity—a VDP that has passed the 60-day deadline or a final Judgment of Parentage. California law makes disestablishment extremely difficult to protect the child’s stability and legal right to support.

A court may set aside a binding paternity judgment only under specific conditions, often requiring evidence of:

1. Fraud: If the mother intentionally misrepresented or concealed facts to induce the man to believe he was the father.

2. Mistake: If the father mistakenly believed he was the biological parent, especially when a child was born during a marriage where another man was the biological father (this falls under the Family Code Section 7643 which addresses the presumption of paternity).

3. Duress: If the VDP was signed under threat or coercion.

In a landmark change, California Family Code Section 7646 allows a man to file a motion to set aside a judgment of paternity based on genetic test results that exclude him, provided the motion is filed within two years of learning of the genetic test. The court must consider the Best Interest of the Child standard, weighing the psychological and financial impact on the child before nullifying a long-standing legal relationship. This is not a simple administrative filing; it requires a compelling legal argument and the submission of certified genetic test results.

An experienced paternity lawyer in Orange County is essential for navigating disestablishment, as the burden of proof is high, and the court’s primary concern remains the welfare of the child, even when biological evidence contradicts the legal finding.