In Circuit Check v. QXQ, the jury had found the claims of the patentof Circuit Check not invalid as obvious, the district court judge granted judgment as a matter of lawthat the claims were obvious and invalid, and the CAFC reversed the district court's judgment as a matter of law. Thus, not obvious, obvious, not obvious. The END of the Circuit Check opinion states:Whatever doubts we have about these patents, the ju-ry verdict was supported by substantial evidence.We therefore reverse the district court’s grant of judgment as a matter of law and remand for further proceedings consistent with this opinionThe big issue in the case was whether certain prior art was analogous:At trial, QXQ argued that three additional refer-ences—rock carvings, engraved signage, and a machining technique known as Prussian Blue (collectively, the “disputed prior art”)—disclose the limitation not present in the stipulated prior art and constitute analogous prior…
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