`
`BEFORE THE PATENT TRIAL AND APPEAL BOARD
`
`SPRINT SPECTRUM L.P., CELLCO PARTNERSHIP D/B/A VERIZON WIRELESS,
`AND AT&T MOBILITY LLC
`
`Petitioners
`
`V.
`
`ADAPTIX, INC.
`Patent Owner
`
`Case No. TBD
`
`Patent 8,934,375
`
`POWER OF ATTORNEY FOR PETITIONER AT&T MOBILITY LLC
`
`Mail Stop: Patent Board
`Patent Trial and Appeal Board
`US. Patent and Trademark Office
`
`P.O. Box 1450
`
`Alexandria, Virginia 22313-1450
`
`
`
`Power ofAttorney
`US. Patent No. 8,934,375
`
`Pursuant to 37 C.F.R. § 42.10, Petitioner AT&T Mobility LLC hereby
`
`appoints the practitioners associated with Baker Botts LLP, including the following
`
`counsel, as its attorneys to transact all business in the USPTO associated with the
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`inter partes review(s) of U.S. Patent No. 8,934,375.
`
`Lead Counsel
`
`for AT&T Mobili LLC
`
`Back-up Counsel
`for AT&T Mobili LLC
`
`Douglas M. Kubehl
`BAKER BOTTS L.L.P.
`
`2001 Ross Avenue
`
`Dallas, TX 75201
`
`Kurt Pankratz
`
`BAKER BOTTS L.L.P.
`
`2001 Ross Avenue
`
`Dallas, TX 75201
`
`Phone: (214) 953-6486
`Fax: (214) 661-4486
`doug.kubehl@bakerbotts.com
`USPTO Reg. No. 41,915
`
`Phone: (214) 953-6584
`Fax: (214) 661-4584
`kurt.pankratz@bakerbotts.com
`USPTO Reg. No. 46,977
`
`Jennifer C. Tempesta
`BAKER BOTTS L.L.P.
`
`30 Rockefeller Plaza
`
`New York, NY 10112
`
`Phone: (212) 408-2571
`Fax: (212) 259-2571
`jennifer.tempesta@bakerbotts.com
`USPTO Reg. No. 59,021
`
`The individual signing below has the authority to execute this document on
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`behalf of petitioner AT&T Mobility LLC.
`
`Date: ____g_,fi 1-5); 3-0/6
`
`0 ‘gig:
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`__
`
`Tim Dyll
`Executive Director —Senior Legal Counsel
`AT&T Mobility LLC