Appeal No. 2003-1570
Application 08/748,986
of the winches commence simultaneously (see page 2, line 86 et
seq.).
Anticipation is established only when a single prior art
reference discloses, expressly or under principles of inherency,
each and every element of a claimed invention. RCA Corp. v.
Applied Digital Data Sys., Inc., 730 F.2d 1440, 1444, 221 USPQ
385, 388 (Fed. Cir. 1984). In other words, there must be no
difference between the claimed invention and the reference
disclosure, as viewed by a person of ordinary skill in the field
of the invention. Scripps Clinic & Research Found. v. Genentech
Inc., 927 F.2d 1565, 1576, 18 USPQ2d 1001, 1010 (Fed. Cir. 1991).
Guerrero does not meet the limitations in independent claim
17, and the corresponding limitations in independent claims 22
and 25, requiring the first ends of the ropes to be wound on the
hoisting mechanisms, the relative amount by which the ropes are
taken up to be sensed and the operation of at least one of the
hoisting mechanisms to be adjusted based on a processor routine
operating in response to the sensing. Notwithstanding the
examiner’s findings to the contrary (see pages 3 and 5 in the
answer), a person of ordinary skill in the art would not view
Guerrero’s cable storage reels 20 and 22, which perform no
hoisting function, as constituting part of Guerrero’s hoisting
5
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