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Legal Information: Colorado
Laws current as of February 12, 2026 How is paternity established?
For parents who were not married when their child was born, paternity or parentage can be established in court or when the non-birthing parent signs an acknowledgment of parentage or paternity. To read additional ways that paternity can be established, see section 19-4-105 of the law on our Selected Colorado Statutes page.1
1 Colo. Rev. Stat. § 19-4-105; see also How to Establish Someone as a Parent on the Colorado Judicial website
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