Fed. Circ. Tosses Ruling For Mayo Nixing Test Patents

Law360, New York (September 16, 2009, 5:14 PM EDT) -- A federal appeals court on Wednesday upheld the validity of two patents Prometheus Laboratories Inc. asserted against units of the Mayo Clinic in a dispute over tests used to determine the proper dosage levels for patients taking thiopurine drugs.

The U.S. Court of Appeals for the Federal Circuit reversed a lower court order deeming the patents invalid, finding that the district court judge misinterpreted the patents in granting summary judgment to defendants Mayo Medical Laboratories and Mayo Clinic Rochester.

The patents claim methods for calibrating the...
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