Mealey's (March 18, 2020, 9:50 AM EDT) -- WASHINGTON, D.C. — In a ruling issued March 17, a divided Federal Circuit U.S. Court of Appeals disagreed with a California federal judge that various claims of two patents relating to separating fetal DNA from maternal DNA in cell-free DNA floating in a mother’s bloodstream are directed to an ineligible natural phenomenon (Illumina Inc., et al. v. Ariosa Diagnostics Inc., et al., No. 19-1419, Fed. Cir., 2020 U.S. App. LEXIS 8327)....