Challenged claims of Pictiva Displays International Ltd.'s patent that relates to an encapsulation method for organic light emitting diode devices are unpatentable as obvious over prior art, the Patent Trial and Appeal Board said, in an inter partes review by Samsung Display Co. Ltd. The board determined that the challenged claims are obvious over prior art that generally relates to a method of manufacturing a self-light emitting device, teaches a covered substrate including a flexible substrate layer and a plurality of cooperative barrier layers that comprise one or more planarizing layers and one or more high-density layers, and that relates ...
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