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Patent Invalidity Versus Noninfringement, Roger Allen Ford

Law Faculty Scholarship

Most patent scholars agree that the Patent and Trademark Office grants too many invalid patents and that these patents impose a significant tax upon industry and technological innovation. Although policymakers and scholars have proposed various ways to address this problem, including better ex ante review by patent examiners and various forms of ex post administrative review, district courts invalidating patents in litigation remain a core defense against bad patents. This article analyzes a previously unidentified impediment to the use of district courts to invalidate patents. Nearly every patent lawsuit rises or falls on one of two defenses: invalidity or noninfringement. …