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This Article studies the Federal Circuit's use of excessive reasonable royalty awards as a patent infringement deterrent. I argue against this practice, explaining that, properly viewed in context of the patent system as a whole, distorting the reasonable royalty measure of damages is an unnecessary and ineffective means of ensuring an optimal level of reward for inventors and deterrence for infringers. First, I introduce cases in which the Federal Circuit and other courts following its lead have awarded punitive reasonable royalty awards and explain the Federal Circuit's professed rationale for doing so. Next, I demonstrate that this practice makes little sense, given the number of other powerful deterrents already present in the patent system. I also explain that any additional deterrence-related benefits attributable to excess damages are not realized when courts impose those damages against innocent infringers - a group that likely makes up the lion 's share of patent infringers. I further explain that there is good reason to believe that the patent system already overdeters infringement without the added burden of inflated royalties, because accused infringers participating in a competitive market face strong incentives not to challenge patents asserted against them. Finally, I propose several patent reforms for efficiently deterring deliberate copyists, while sparing innocent infringers from that threat.

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