The doctrine of issue preclusion, or collateral estoppel, prevents a party who unsuccessfully litigated an issue to a final decision in one proceeding from relitigating the same issue in future proceedings. In the patent...more
On December 8, 2021, the Federal Circuit in AztraZeneca AB v. Mylan Pharms. Inc. held that the claim construction of a percentage term should “‘most naturally align[] with the patent’s description of the invention,’ as...more