Appeal No. 1997-3580 Application 08/400,002 “definition” of a “backup system,” and we do not find any evidence on this record to support the examiner’s assertions as to what is apparently implied by a backup system. On the other hand, we completely agree with appellant that the deallocation taught by Sathi would destroy the purpose of Walls which is to retain a backup copy of a file in addition to the working file. Despite the relative simplicity of the claimed invention and the separate teachings of the claimed steps in the collective teachings of the references, we are compelled to agree with appellant that there is simply no rational basis for the artisan to modify the backup system of Walls with the deallocation as recited in claim 5. The only basis for making the modification proposed by the examiner is to improperly reconstruct appellant’s invention in hindsight. Since we find that there is no motivation for combining the teachings of Walls and Sathi in the manner proposed by the examiner, we do not sustain the rejection of claims 5, 7 and 17 as proposed by the examiner. We now consider the rejection of claims 12, 13, 15 and 16 based on the teachings of Walls, Sathi and Johnson. As noted above, the teachings of Walls and Sathi are not properly -8-Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 NextLast modified: November 3, 2007