In assisted-reproduction cases, genetic connection is not the only factor determining legal parentage. California law places substantial importance on consent, intent, properly executed agreements, and the circumstances under which conception occurred. Addressing parentage before conception or birth can prevent serious disputes later.

Written Consent Helps Establish the Parties’ Intent

When a person gives birth through assisted reproduction and an intended parent consents to the procedure, both may be recognized as legal parents. A written agreement signed before conception provides important evidence of that shared intent.

Failure to obtain written consent does not necessarily end the intended parent’s claim. A court may consider clear and convincing evidence of a preconception oral agreement that both people would be parents. Relying on an oral understanding, however, creates greater uncertainty about what was agreed and whether the required proof exists.

Medical intake forms alone may not resolve parentage. A carefully drafted agreement should clearly identify who intends to be a parent and who is acting only as a donor.

Donor Status Depends on the Arrangement

A person who provides semen through qualifying medical procedures generally is not treated as a parent unless a preconception written agreement establishes a different intent. Similar rules address donated ova and embryos. The original source of genetic material, the recipient, the medical process, and any written agreements all may matter.

Donor status does not always prevent a person from later claiming presumed-parent status based on postbirth conduct, such as receiving the child into their home and openly holding the child out as their own. The parties should therefore understand that later behavior may become legally significant even when biological parentage was addressed in advance.

Surrogacy Agreements Require Careful Compliance

Gestational-carrier agreements have detailed requirements. The agreement generally should be completed before embryo transfer or the commencement of medication for the transfer. Separate independent attorneys, proper signatures, formal acknowledgment, and clear provisions for medical expenses are important components.

When the requirements are met, a court can establish the intended parents’ legal parentage and determine that the gestational carrier is not a parent. A parentage action may be filed before birth, although enforcement of a prebirth judgment generally waits until the child is born.

Early Legal Planning Protects the Child’s Stability

Parentage affects custody, support, inheritance, medical decision-making, insurance, and the issuance of birth records. Agreements should be coordinated with the medical process, and all potentially interested people should receive the required notice and opportunity to participate.

A California parentage attorney can prepare or review preconception agreements, identify the rights of intended parents and donors, obtain an appropriate parentage judgment, and address interstate recognition concerns. Establishing legal parentage deliberately helps ensure that the child’s legal family reflects the parties’ documented intent rather than leaving the issue to a later dispute.