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`_______________
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`BEFORE THE PATENT TRIAL AND APPEAL BOARD
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`_______________
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`VALVE CORPORATION,
`Petitioner,
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`v.
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`PALTALK HOLDINGS, INC.,
`Patent Owner.
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`_______________
`
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`Case IPR2018-01238
`Patent 6,226,686
`_______________
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`
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`PATENT OWNER’S POWER OF ATTORNEY
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`
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`POWER OF ATTORNEY
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`Pursuant to 37 C.F.R. § 42.10, Patent Owner, PalTalk Holdings, Inc., hereby
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`appoints the below practitioners, as its attorneys to transact all business in the Patent
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`Trial and Appeal Board of the United States Patent and Trademark Office connected
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`with the above—identified inter partes review proceeding.
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`Please direct all communication regarding this interpartes review proceeding to:
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`First Backup Counsel
`Lead Counsel
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`Keith D. Harden
`Gregory M. l-Iowison
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`Reg. No. 74,472
`Reg. No. 30,646
`MUNCK, WILSON, MAN DALA, LLP
`MUNCK, WILSON, MANDALA, LLP
`12770 Coit Road, Suite 600
`12770 Coit Road, Suite 600
`Dallas, Texas 75251
`Dallas, Texas 75251
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`khardengagmunckwilson.com
`ghowisonfiaZmunckwilsoncom
`972.6283 600 (telephone)
`972.6283 600 (telephone)
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`
`972.628.3611 facsimile
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`922.628.3611 facsimile
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`Backup Counsel
`Brian D. Walker
`Reg. No. 37,751
`MUNCK, WILSON, MANDALA, LLP
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`12770 Coit Road, Suite 600
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`Dallas, Texas 75251
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`bwalkeréfimunckwilsoncom '
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`972.628.3600 (telephone)
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`972.628.3611 (facsimile)
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`The undersigned individual is authorized to sign on behalf ofPatent Owner.
`/
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`Signature:
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`Name:
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`Title:
`of PaITalk Holdings, Inc.
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`Date:
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`Q p L<6
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