(February 12, 2020, 12:57 PM EST) -- ALEXANDRIA, Va. — On Feb. 11, an inter partes review (IPR) petitioner told the Patent Trial and Appeal Board that a patented method of fabricating a semiconductor flip-chip light emitting diode (LED) would have been obvious to a person of skill in the art (POSA) at the time of patenting (Cree Inc. v. Document Security Systems Inc., No. IPR2020-00557, PTAB)....