Uniloc Overrules the 25% Rule

A decision in Uniloc USA, Inc. v. Microsoft Corporation overruled any use of the 25% rule as a legitimate rule of thumb in determining a reasonable royalty. Instead, damages experts are left with the Georgia-Pacific factors. In particular, looking at royalties paid or received in licenses for the patent in suite or in comparable licenses and looking at the portion of profit that may be customarily allowed in the particular business for the use of the invention or similar inventions may be the sole legitimate basis for commencing a determination of a reasonable royalty in hypothetical negotiations. It is not clear that this evidentiary ruling will reign in excessive damages based on flawed calculations of unrealistic royalty calculations, but the decision in Uniloc should make it more difficult for experts to hand wave and rule of thumb their way to a reasonable royalty.