Posts Tagged: "US Patent No. 8137757"

BRI and how it increases an obviousness determination

Owens Corning v. Fast Felt (Fed. Cir. 2017) illustrates an example of how the broadest reasonable interpretation (BRI) standard increases the chances that an obviousness argument could successfully invalidate a patent claim during a post grant patent review proceeding; and make it more difficult to overcome an obviousness rejection during patent prosecution. It also illustrates how broadening a claimed invention’s field of use could be detrimental to the claim’s validity and make it harder to overcome an obviousness rejection. 

PTAB Erred Finding Claims Nonobvious in IPR, Federal Circuit Reverses Without Remand

In Owens Corning v. Fast Felt Corp, Fast Felt sued Owens Corning for infringement, and Owens Corning filed a petition with the PTO seeking inter partes review of claims 1, 2, 4, 6, and 7. All of the challenged claims contain the term “roofing or building cover material.” Owens Corning argued that the claims are obvious over Lassiter, Hefele, and Eaton. The Board concluded that Owens Corning failed to show obviousness of any of the challenged claims… While the preferred embodiment of a claim might focus on a particular element of the claim, this is not enough to narrow the claim scope of the IPR. The Board must still give the claim its broadest reasonable interpretation in light of the specification. Where the record and a correct claim construction support only one result, reversal is warranted, without need for remand.