Posts Tagged: "clear error"

CAFC uses de novo review because claim interpretation based solely on intrinsic evidence

On remand, the Federal Circuit used the de novo standard. Teva’s deferential “clear error” standard did not apply, because the district court did not make any factual findings based on extrinsic evidence in connection with its claim construction. Although extrinsic evidence may be used at trial, a district court must rely on subsidiary factual findings from that evidence to reach its claim construction, in order for any deference to arise on appeal. In this case, the Federal Circuit held that the intrinsic evidence led to a de novo conclusion that the district court conflated the claimed virtual machine with applications written to run on the virtual machine.

Supremes end Federal Circuit love affair with de novo review

The United States Court of Appeals for the Federal Circuit has had a very long love affair with de novo review, a standard whereby the reviewing appellate court can simply do whatever they want without giving any deference to the district court judge or the jury. It isn’t much of an exaggeration to say that the Federal Circuit does what they want, when they want, how they want, and they have rarely let the standard of review get in the way. That was until today. Assuming the Federal Circuit follows the Teva decision as they are supposed to and as they have mindlessly followed other recent Supreme Court decisions in Myriad, Mayo and Alice, the Federal Circuit’s application of the de novo review standard to everything will come to an abrupt end.