Who the Parent Is on Paper
C.R.S. 19-4-105 — married or in a civil union, or within three hundred days after it ends
A person is presumed to be the natural parent of a child in Colorado if they and the parent who gave birth are or were married or in a civil union, and the child was born during it, or within three hundred days after it ended by death, annulment, invalidity, dissolution or divorce, or after a decree of legal separation.
Who handles this in Colorado: legal aid programs and the state offices, listed in the Colorado directory.
An attempted marriage or civil union that is or could be declared invalid can raise the same presumption, and the section lists other ways it arises.
Sources for this section (1)
- C.R.S. 19-4-105 — Presumption of paternity
Legal information, not legal advice. Verified as of October 2026. Applying it to a particular situation is the work of a licensed Colorado attorney.