Federal Circuit Approves Placing Burden on Patent Owner to Show Patentability Over Prior Art Cited in Original Prosecution History
In Prolitec, Inc. v. Scentair Technologies, Inc., [2015-1020] (December 4, 2015), the Federal Circuit affirmed the PTAB’s decision that claims of U.S. Patent No. 7,712,683 were unpatentable as anticipated under 35 U.S.C. §102 alone and as obvious under 35 U.S.C. §103, and denying the patent owner’s motion to amend.
Prolitic argued that the PTAB construed the term “mounted” and “fixed in position” too broadly, arguing with the support of export testimony that the claims should be limited to the preferred embodiments which showed a single use device. The Federal Circuit rejected these arguments, noting that the description specifically contemplated reusable devices as well. The Federal Circuit rejected Prolitic’s expert’s testimony that the invention related to single use devices with a permanent mounting, noting that an expert “cannot rewrite the intrinsic record of the . . .patent to narrow the scope of the patent, saying Phillips instructs that a court should discount any expert testimony ‘that is clearly at odds with the written record of the patent.
Prolitic also appealed the PTAB’s denial of its motion to amend the claims to comport with its proffered constructions. Prolitec initially argued that it was improper for the Board to place the burden on the patentee to show patentability of the proposed claim amendments, but the Federal Circuit disposed of this argument in Microsoft Corp. v. Proxyconn, Inc., 789 F.3d 1292 (Fed. Cir. 2015). Prolitec then tried to argue that it did not have the burden to establish patentability over prior art references cited in the patent’s original prosecution history because they are not prior art of record in the IPR. The Federal Circuit noted that the in MasterImage 3D, Inc. v. RealD Inc., IPR2015-00040 (PTAB July 15, 2015), the Board stated, that “prior art of record” includes “any material art in the prosecution history of the patent.” The Federal Circuit found this construction reasonable:
We conclude that the PTO’s approach is a reasonable one at least in a case, like this one, in which the Board’s denial of the motion to amend rested on a merits assessment of the entire record developed on the motion, no just on the initial motion itself. The Board’s position—that the patentee’s burden on a motion to amend includes the burden to show patentability over prior art from the patent’s original prosecution history—is not in conflict with any statute or regulation. Moreover, it is not unreasonable to require the patentee to meet this burden.
The Federal Circuit discerned no reversible error in the Board’s denial of Prolitec’s motion to amend.