UNITED STATES PATENT AND TRADEMARK OFFICE
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`BEFORE THE PATENT TRIAL AND APPEAL BOARD
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`SAMSUNG ELECTRONICS CO., LTD., and
`SAMSUNG ELECTRONICS AMERICA, INC.,
`Petitioner
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`V.
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`ZOPHONOS INC.,
`Patent Owner
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`Case IPR2026-00083
`U.S. Patent No. 10,656,906
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`PATENT OWNER’S POWER OF ATTORNEY
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`Mail Stop “PATENT BOARD”
`Patent Trial and Appeal Board
`U.S. Patent and Trademark Office
`P.O. Box 1450
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`Alexandria, VA 22313-1450
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`Case IPR2026-00083
`U.S. Patent No. 10,656,906
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`Pursuant to 37 C.F.R. § 42.10(b), Patent Owner Zophonos Inc. (“Patent
`Owner”) hereby appoints the practitioners associated with Customer Number
`26111 and all other practitioners listed below as its attorneys to transact all
`business in the United States Patent & Trademark Office associated with the
`above-captioned inter partes review of U.S. Patent No. 10,656,906.
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`These attorneys include at least:
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`Lead Counsel: Jason D. Eisenberg (Reg. No. 43,447)
`Back-up Counsel: Lestin L. Kenton (Reg. No. 72,314)
`Kristina Caggiano Kelly (Reg. No. 58,164)
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`Address: STERNE, KESSLER, GOLDSTEIN & FOX PLLC
`1101 K Street, NW, 10th Floor
`Washington, DC 20005
`(202) 371-2600 (reception)
`(202) 371-2540 (facsimile)
`jasone-PTAB@sternekessler.com
`lkenton-PTAB@sternekessler.com
`kckelly-PTAB@sternekessler.com
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`FOR: Zophonos Inc.
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`SIGNATURE: “Amscnezs ,Q§/
`7
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`NAME: Levaughn Denton
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`TITLE: CEO
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`DATE: November 24, 2025
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`Case IPR2026-00083
`U.S. Patent No. 10,656,906
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`CERTIFICATE OF SERVICE (37 C.F.R. § 42.6(e))
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`I certify that the above-captioned PATENT OWNER’S POWER OF
`ATTORNEY was served in its entirety on November 24, 2025, upon the
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`following parties via electronic mail:
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`Ali R. Sharifahmadian (Lead Counsel)
`Jeffrey Miller (Back-up Counsel)
`Patrick Reidy (Back-up Counsel)
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`Mark A. Patrick (Back-up Counsel)
`Kyle Tsui (Back-up Counsel)
`Ruifeng Pu (Back-up Counsel)
`ARNOLD & PORTER KAYE SCHOLER LLP
`ali.sharifahmadian@arnoldporter.com
`jeffrey.miller@arnoldporter.com
`patrick.reidy(@arnoldporter.com
`mark.patrick@arnoldporter.com
`kyle.tsui@arnoldporter.com
`ruifeng.pu@arnoldporter.com
`xSamsungZophonosIPRs@arnoldporter.com
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`Respectfully submitted,
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`STERNE, KESSLER, GOLDSTEIN & FOxX PLLC
`/Jason D. Eisenberg/
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`Jason D. Eisenberg
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`Registration No. 43,447
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`Lead Attorney for Patent Owner
`Date: November 24, 2025
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`1101 K Street, NW, 10th Floor
`Washington, DC 20005
`(202) 371-2600
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`25910612.1
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