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Patent Exclusions And Antitrust After Therasense, Herbert J. Hovenkamp

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A patent may be held invalid if it was obtained by “inequitable conduct” before the PTO during the process of patent prosecution. In its Therasense decision the Federal Circuit imposed severe requirements against those attempting to defend against a patent on the basis of inequitable conduct, insisting that inequitable conduct be measured essentially by a subjective test. Objective “reasonable person” tests such as negligence or even gross negligence will not suffice. By contrast, the Supreme Court has insisted that the conduct giving rise to a wrongful infringement action violating the antitrust laws be initially based on an objective test – …