Challenged claims of Optronic Sciences LLC’s patent that relates to a electroluminescence device having stacked capacitors are unpatentable as anticipated by or obvious over prior art, the Patent Trial and Appeal Board held, in an inter partes review by BOE Technology Group Co. Ltd. The board determined that the challenged claims are anticipated by or obvious over prior art that relates to an EL display device with a storage capacitance element for holding a video signal supplied to a gate of a driving transistor, and that concerns a light emitting device using a light emitting element having a layer that ...
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