Provides relative to the presumption of parentage

HB 318 amends Louisiana Civil Code Article 185 to modify the presumption of paternity for children born to married women. The bill reduces the timeline within which a husband is presumed to be the father of a child born after the termination of marriage from three hundred days to ninety days. This change affects the automatic legal presumption that establishes paternity without requiring proof of biological relationship or separate judicial determination, operating as a straightforward temporal modification to existing statutory language that governs the legal relationship between husbands and children born during or immediately following marriage.

The practical effect of this reduction falls primarily on married couples, divorcing spouses, and children born near the end or after the termination of a marriage. Under the amended law, a husband will be presumed the father of a child born within ninety days of marriage termination rather than three hundred days, which corresponds approximately to the normal human gestation period plus thirty days compared to the previous ten-month window. Women divorcing or whose marriages end by death will have a shorter window within which children are presumed to belong to the former husband, potentially affecting child custody determinations, inheritance rights, succession claims, and social security or insurance benefits that rely on the presumption of paternity. The change also impacts children born during this compressed timeframe, as their legal paternity status may depend more critically on whether explicit acknowledgment or adjudication of paternity occurs if birth falls outside the ninety-day window.

Civil Code Article 185 operates within Louisiana's regime of presumptions that establish legal parent-child relationships without requiring separate proof, functioning alongside other provisions governing legitimation, acknowledgment of paternity, and judicial determination of paternity. The presumption created by Article 185 is rebuttable, meaning parties may challenge it through civil action, but it establishes the default legal starting point for determining paternity in contested or ambiguous circumstances. This amendment interacts with succession law, family law concerning custody and child support, and laws governing inheritance rights that depend on legal relationship to a deceased parent, making the temporal presumption significant for establishing entitlements to succession benefits and family law proceedings involving custody determination and spousal property division.