Appeal No. 2000-1361 Page 7
Application No. 08/933,880
that time. We are also in agreement with Appellant’s
characterization that the claimed analysis unit provides merely
an enable signal to the output register whereas the output values
are provided by the combinatorial block (oral hearing and brief,
page 7). The claimed analysis unit analyzes values at the output
of the input register to determine the time at which an output
value is present for enabling the output register to receive the
outcome values as soon as they are provided by the combinatorial
block. Thus, the resulting output value of the combinatorial
block can be taken earlier at the output register based on the
values at the output of the input register, rather than waiting
for a predetermined delay as set by a number of clock pulses
(specification, page 4).
A rejection for anticipation under section 102 requires that
the four corners of a single, prior art document describe every
element of the claimed invention, either expressly or inherently,
such that a person of ordinary skill in the art could practice
the invention without undue experimentation. See Atlas Powder
Co. v. Ireco Inc., 190 F.3d 1342, 1347, 51 USPQ2d 1943, 1947
(Fed. Cir. 1999); In re Paulsen, 30 F.3d 1475, 1478-79, 31 USPQ2d
1671, 1673 (Fed. Cir. 1994). An anticipating reference must
describe the claimed matter with sufficient clarity and detail to
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