Over the years, the PTAB has shed it’s “super-examiner” role to more of that of an umpire— calling balls and strikes. That is to say, the PTAB has drifted toward a relatively narrower view of the scope of issues it will substantively review on appeal, perhaps as a matter of necessity in dealing with the crushing weight of the growing appeal backlog.
Yesterday, in Rexnord Industries v. Kappos (2011-1434), the Federal Circuit shifted the focus of the PTAB away from their recent umpire-like practices toward a more traditional judicial review model.
The Federal Circuit reversed the PTAB for failing to consider all theories raised by an appellee in support of an examiner’s decision in an inter partes patent reexamination irrespective of whether the theory or ground was adopted by the examiner. Rexnord, the third party requester, had proposed rejections based on a combination of references with the added rationale that a certain claimed feature – a gap of less than 10 mm – was merely an obvious design choice. The examiner rejected the claims on the proposed combination of references but did not adopt the design choice theory, instead, opting to substitute his own reasoning. Namely, the examiner’s rejection was premised on an interpretation of the claims which permitted the gap to be 0 mm, or nonexistent.
The PTAB reversed the examiner but refused to consider Rexnord’s “obvious design choice” argument as an alternative basis for affirming the examiner. The PTAB reasoned that its role on appeal Read the rest of this entry »