(December 4, 2015, 1:32 PM EST) -- WASHINGTON, D.C. — A June ruling by the Federal Circuit U.S. Court of Appeals that a medical discovery relating to the existence of non-nucleated free-floating fetal DNA (cffDNA) in maternal blood does not cover patent-eligible subject matter will stand, thanks to a denial of a petition for rehearing en banc on Dec. 2 (Ariosa Diagnostics Inc. et al. v. Sequenom Inc. et al., Nos. 14-1139, -1144, Fed. Cir.)....