Addressing the issue of patent eligibility under §101, the US Court of Appeals for the Federal Circuit reversed a district court, explaining that the method of preparation claims at issue are not directed to a patent-ineligible natural phenomenon. Illumina, Inc. v. Ariosa Diagnostics, Inc., Case No. 19-1419 (Fed. Cir. Mar. 17, 2020) (Lourie, J.) (Reyna, J., dissenting).