In a case involving a patented method for purifying antibodies, the US Court of Appeals for the Federal Circuit determined that the process of chilling a composition to below room temperature could be found both obvious and anticipated by a process that purified that composition at room temperature. Genentech, Inc. v. Hospira, Inc., Case No. 18-1933 (Fed. Cir. Jan. 10, 2020) (Chen, J) (Newman, J, dissenting).

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