Duty of Disclosure: Applicant’s Contradictory Statements to EPO and USPTO Support Finding of Inequitable Conduct
The Federal Circuit’s recent decision in Therasense, Inc. v. Becton, Dickinson & Co., No. 2008-1511 (Fed. Cir. Jan. 25, 2010) held that applicant’s statements made in proceedings before foreign patent offices may be required disclosures in prosecution before the USPTO (“PTO”), particularly when those statements directly contradict other statements made during prosecution. From the court’s holding: “An applicant’s earlier statements about prior art, especially one’s own prior art, are material to the PTO when those statements directly contradict the applicant’s position regarding that prior art in the PTO.”