`
`BEFO
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`THE PATENT TRIAL AND APPEAL BOARD
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`SONY CORPORATION
`Petitioner
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`V.
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`ARRIS ENTERPRISES LLC
`Patent Owner
`
`Case: IPR2017-01964
`Patent 6,473,858
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`ARRIS NTERPRISES LLC'S POWER OF ATTORNEY
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`Mail Stop "PATE T BOARD"
`Patent Trial and Ap eal Board
`U.S. Patent & Trad mark Office
`P.O. Box 1450
`Alexandria, VA 22 13-1450
`
`
`
`Arris Enterprises LLC's Power of Attorney for
`Inter Partes Review of U.S. Patent No. 6,473,858
`Pursuant to 37 C.F.R. § 42.lO(b), Patent Owner ARRIS Enterprises LLC and
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`Real Party-in.;.Interest ARRIS International plc hereby appoint the practitioners of
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`Customer No, 26111 as their attorneys/agents to transact all business in the United
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`States Patent & Trademark Office and Patent Trial and Appeal Board associated
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`with the above-captioned inter partes review of U.S. Patent No. 6,473,858.
`
`These practitioners include at least:
`
`Robert E. Sokohl (Reg. No. 36,013) phone: 202-772-8677
`Chandrika Vira (Reg. No. 60,607) phone: 202-772-8672
`Michelle K. Holoubek (Reg. No. 54,179) phone: 202-772-8855
`
`Address:
`
`STERNE, KESSLER, GOLDSTEIN & Fox P.L.L.C.
`1100 New York Avenue, NW
`Washington, DC 20005
`202.371.2600 (reception)
`202.371.2540 (facsimile)
`rsokohl-PT AB@skgf.com
`holoubek@skgf.com
`cvira-PT AB@skgf.com
`
`TITLE: Sr. Counsel
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`TITLE: Sr. Counsel
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