Prolitec: Patentee must show patentability over prior art from original case to amend in IPR

The Federal Circuit affirmed a patentee's burden included showing patentability over prior art from the patent's original prosecution history. Prolitec failed to show that its amended claim would still be patentable (non-obvious) over the combination of an original prior art reference and Benalikhoudja. Accordingly, the Court affirmed the Board's finding of anticipation and obviousness. In her dissent, Judge Newman argued that the PTAB erred in denying Prolitec's motion to amend, explaining...