Originally published in Law360. With its April 25, 2014, opinion in Apple Inc. v. Motorola Inc., the Federal Circuit has provided new material for defenders of Daubert challenges, and may have initiated a reverse in the trend of challenging expert testimony. While past opinions from the Federal Circuit have been helpful to understand what is unacceptable in calculating patent damages, the opinion in Apple v. Motorola offers relatively broad guidance on what is acceptable in calculating damages.