Appeal No. 2001-2660
Application 09/392,341
artisan necessarily would have found it obvious without more
evidence to have employed the teaching value of Magee to have
minimized or eliminated these prior art detrimental factors of
the circuit of prior art Figure 1.
On the one hand, Magee emphasizes changing the bias voltage
to make independent the threshold switching levels of the
transistor circuit of his Figure 1, yet from the nature of the
explanation of the operation and disadvantages of appellants'
prior art Figure 1, there appears to be no relationship to the
problems associated with appellants' prior art Figure 1 and the
solution provided by Magee without first understanding the nature
of the solution provided by appellants in the disclosed
invention. The discussion on the disadvantages of appellants'
admitted prior art Figure 1 does not indicate necessarily any
problem with the threshold voltages of or bias voltages for any
transistor of this figure such as to lead the artisan to the
solution provided by Magee's Figure 1. Stated differently, the
nature of the problems isolated by the discussion of the prior
art in Magee does not appear to us to address or solve directly
any of the known problems associated with appellants' prior art
Figure 1.
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