Appeal No. 1998-0943
Application No. 08/300,500
knowledge of the particular art and be in possession of the
invention.” In re Graves, 69 F.3d 1147, 1152, 36 USPQ2d 1697,
1701 (Fed. Cir. 1995), quoting from In re LeGrice, 301 F.2d
929, 936, 133 USPQ 365, 372 (CCPA 1962). In our view, the
skilled artisan would appreciate that any touch screen input
device would require an acknowledgment feature to verify, for
example, that actual contact was made with the screen. McCain
is not required to specifically disclose such acknowledgment
feature in order to be an anticipatory reference because such
a user notification feature would be present in any system
with a touch screen input feature. As further evidence of the
recognition to a skilled artisan of the inclusion of user
acknowledgment features in touch screen input devices, we cite
the following excerpt from Computer Dictionary, Second
Edition, published by Microsoft Press (copy enclosed) in which
“touch screen” is defined in part as “[a] computer screen
designed or modified to recognize the location of a touch on
its surface. By touching the screen, the user can make a
selection or move a cursor.” Even in the limited example
provided by this definition, the movement of the cursor would
provide an acknowledgment to the user of positional input data
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