As we have discussed (here and here), owners of pre-AIA patents may be able to “swear behind” alleged prior art references by providing evidence of an earlier invention date, but the inventors’ testimony concerning conception of the invention must be corroborated by independent evidence. In Kolcraft Enterprises, Inc. v. Graco Children’s Products, Inc., No. 2018-1259 (Fed. Cir. Jul. 2, 2019), the patent owner was unable to swear behind alleged prior art because it did not provide sufficient corroborating evidence.
Continue Reading Corroboration Required to Prove Earlier Invention Date
The Federal Circuit on June 14 affirmed Patent Office decisions in inter partes review (IPR) proceedings canceling patents the University of Minnesota owned, concluding that “state sovereign immunity does not apply to these proceedings.” The court’s conclusion is not limited to instances where, for example, a state university waives its sovereign immunity by asserting a patent in federal court proceedings. One broad import of the court’s holding therefore is that all state university patents are vulnerable to attack in PTO proceedings. Regents of the Univ. of Minn. v. LSI Corp., Appeal 2018-1559 (Fed. Cir. June 14, 2019); Regents of the Univ. of Minn. v. Ericsson Inc., Appeals 2018-1560 et seq. (Fed. Cir. June 14, 2019).





