In the wake of eBay, courts and scholars have been working to figure out what to do after denying injunctive relief. A common suggestion is to award an ongoing royalty - often termed a compulsory license. In an impressive body of research stretching back to the year 1660, Lewis & Clark professor Tomás Gómez-Arostegui concludes that "federal courts lack the authority, in either law or equity, to award prospective compensation to plaintiffs for post-judgment copyright or patent infringements."
Until such time as Congress creates a new form of compulsory licensing, future-damage awards and continuing royalties can only be granted in lieu of a final injunction by consent of the parties.
In non-patent cases, such as accidental death, courts regularly calculate future damages - such as earning capacity. However, in those cases, the award is based on a past tort. In patent cases, prospective damages are based upon future infringing actions.
Looking historically, Gómez-Arostegui could not find a single instance prior to 1789 where the Chancery "awarded a continuing royalty in lieu of a final injunction in infringement cases." In cases where no injunction was granted, the court did "nothing at all" about ongoing infringement.
How does this cut:
Read the paper here.