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FL Parentage 340Mandatory

Summons: Notice about Petition for De Facto Parentage

Washington · Washington State Courts · Effective September 1, 2026

This form is a notice that tells a person that another person has started a case asking the court to declare them a legal parent, even if they are not listed as a parent. It explains what a de facto parent is and what steps the person needs to take next.

Open the official PDFfrom Washington State Courts

Where this fits in a case

Start a case

Stage: Start a case

This form is used when someone files a case asking the court to recognize a person as a de facto parent. The person who receives this form must respond in writing within a specific number of days.

Usually filed by the person starting the case.

Common questions

What does this form tell me?
This form is a summons that notifies you that someone has filed a case asking the court to declare them a de facto parent. It explains what a de facto parent is and what steps you need to take to respond.

Revision history

No changes recorded since we started tracking this form on October 9, 2026. The current version took effect September 1, 2026.

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