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Idemitsu Kosan Co., Ltd. v. SFC Co. Ltd.

United States Court of Appeals, Federal Circuit

September 15, 2017

IDEMITSU KOSAN CO., LTD., Appellant
v.
SFC CO. LTD., Appellee

         Appeal from the United States Patent and Trademark Office, Patent Trial and Appeal Board in No. IPR2015-00564.

          Jacob Andrew Doughty, Oblon, McClelland, Maier & Neustadt, LLP, Alexandria, VA, argued for appellant. Also represented by Richard Kelly, Yuki Onoe.

          Blas P. Arroyo, Alston & Bird LLP, Charlotte, NC, argued for appellee. Also represented by Robert Flynt Strean.

          Before Prost, Chief Judge, O'Malley, and Chen, Circuit Judges.

          O'Malley, Circuit Judge.

         Idemitsu Kosan Co., Ltd. ("Idemitsu") seeks review of the July 29, 2016 decision of the Patent Trial and Appeal Board ("the Board") finding claims 1-5, 7-11, 13, and 14 of U.S. Patent No. 8, 334, 648 ("the '648 patent") invalid as obvious over International Publication WO 02/052904 ("Arakane"). See SFC Co. Ltd. v. Idemitsu Kosan Co., Ltd., No. IPR2015-00564, 2016 Pat. App. LEXIS 13340 (P.T.AB. July 29, 2016). For the following reasons, we affirm.

         I. Background

         Idemitsu is the owner of the '648 patent, titled "Organic Electroluminescence Device and Organic Light Emitting Medium." In brief, the '648 patent claims a device containing a particular organic medium layered between an anode and cathode; when a voltage is applied through the electrodes, the organic medium emits light. See '648 Patent, at Abstract. Claim 1 is representative:

1. An electroluminescence device comprising a pair of electrodes and a layer of an organic light emitting medium disposed between the pair of electrodes, wherein the layer of an organic light emitting medium is present as a light emitting layer and comprises:
(A) an arylamine compound represented by formula V:
(Image Omitted)
wherein X3 is a substituted or unsubstituted py-rene residue, Ar5 and Ar6 each independently represent a substituted or unsubstituted monovalent aromatic group having 6 to 40 carbon atoms, and p represents an integer of 1 to 4; and
(B) at least one compound selected from the group consisting of anthracene derivatives and spiroflu-orene derivatives, wherein said anthracene derivatives are represented by formula I:
A1-L-A2 (I)
wherein A1 and A2 may be the same or different and each independently represent a substituted or unsubstituted monophenylanthryl group or a substituted or unsubstituted diphenylanthryl group, and L represents a single ...

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