Patent law is presently under-theorized. Patents are granted to serve as rewards for certain types of inventive successes, but the nature of the successes to be rewarded, the circumstances that should trigger rewards, and the size of the rewards that will best serve the public remain in substantial dispute. One of the primary reasons for these uncertainties is the incompleteness of underlying theories explaining why patented inventions deserve special treatment and rewards. The lack of good understanding of the theoretical justifications for patent rewards (and the limitations of those justifications) means that patent law standards are being reconsidered and revised without a clear sense of patent law goals. If we do not know where we are ...