Smith v. Hayashi

The mere fact that two components function as equivalents in the claimed environment does not alone establish that one would have been obvious over the other, but evidence that both were known in the art for that function is strong evidence of obviousness in substituting one for the other.

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A language model, from how the MPEP uses this case rather than from the opinion.

Confidence

high — self-reported, not calibrated against a measured error rate

Human review

Not reviewed by a person

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