Appeal No. 2000-1813 Page 5
Application No. 08/954,156
by white ink with security indicia reverse imaged thereon.
Additionally, while Greenway does teach a sheet of paper
having a first area having security indicia positively imaged
in "fugitive water colour ink" thereon and a second area
substantially covered by "fugitive water colour ink" with
security indicia reverse imaged thereon, Greenway does not
teach or suggest using white ink as the "fugitive water colour
ink." Thus, the examiner's finding on page 3 of the third
Office action that Greenway discloses documents comprising a
first area having security indicia positively imaged in white
ink thereon and a second area substantially covered by white
ink with security indicia reverse imaged thereon is in error.
Accordingly, the examiner's determination (third Office
action, page 3) that the claimed invention would have been
obvious to an artisan is not supported by any evidence that
would have led an artisan to arrive at the claimed invention.
In our view, the only suggestion for modifying Whiteside
by the teachings of Greenway to meet the above-noted
limitations stems from hindsight knowledge derived from the
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