Mealey's (October 10, 2018, 12:05 PM EDT) -- WASHINGTON, D.C. — In an Oct. 9 ruling, the Federal Circuit U.S. Court of Appeals agreed with a California federal judge that a patent directed to a method of detecting an antibiotic-resistant form of tuberculosis in human deoxyribonucleic acid (DNA) is invalid (Roche Molecular Systems Inc. v. Cepheid, No. 17-1690, Fed. Cir., 2018 U.S. App. LEXIS 28411)....