Petition of the day

Issue: Whether the Court of Appeals for the Federal Circuit erred in restricting district courts’ equitable discretion in evaluating patent unenforceability, contrary to this Court’s precedent in Keystone Driller Co. v. General Excavator Co., Hazel Atlas Glass Co. v. Hartford-Empire Co., and Precision Instrument Manufacturing Co. v. Automotive Maintenance Machinery Co., by applying a rigid test that (a) forecloses district courts from considering the entire circumstantial record; and (b) precludes district courts from granting equitable remedies where a patent applicant has violated the PTO’s duty of candor.