Case: Patents/Anticipation & Obviousness (P.T.A.B.)

Nov. 18, 2021, 6:08 PM

The Patent Trial and Appeal Board found that challenged claims of Document Security Systems Inc.'s patent that relates to a white-emitting LED are unpatentable as anticipated by or obvious over prior art, in an inter partes review by Seoul Semiconductor Co. Ltd. and Seoul Semiconductor Inc. The board said that the challenged claims are anticipated by or obvious over various combinations of patent publications that disclose a method for manufacturing a light-emitting element’s phosphor layer and provide reasons for scattering both the light from the LED and the wavelength converted light, and a prior patent that discloses a layer of ...

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