`
`__________________
`
`BEFORE THE PATENT TRIAL AND APPEAL BOARD
`
`__________________
`
`
`
`
`
`T-Mobile US, Inc., T-Mobile USA, Inc., and TeleCommunication Systems, Inc.,
`Ericsson Inc., and Telefonaktiebolaget LM Ericsson
`Petitioners,
`
`v.
`
`TracBeam, LLC,
`Patent Owner.
`
`__________________
`
`
`
`U.S. Patent No. 7,525,484
`
`Title: GATEWAY AND HYBRID SOLUTIONS FOR WIRELESS LOCATION
`
`__________________
`
`
`
`PETITIONERS’ POWER OF ATTORNEY
`
`
`
`1
`
`
`
`
`
`Petitioners
`
`T-Mobile US,
`
`Inc.
`
`and
`
`T-Mobile USA,
`
`Inc.,
`
`TeleCommunication Systems, Inc., Ericsson Inc., and Telefonaktiebolaget LM
`
`Ericsson, hereby appoint the following practitioners as their attorneys to transact
`
`all business in the United States Patent and Trademark Office in connection with
`
`the inter partes review proceedings for the above-referenced patent:
`
`Name
`
`Brian W. Oaks
`
`Douglas M. Kubehl
`
`Chad C. Walters
`
`Ross G. Culpepper
`
`PTO Registration Number
`
`Reg. No. 44,981
`
`Reg. No. 41,915
`
`Reg. No. 48,022
`
`Reg. No. 69,339
`
`The practitioners listed above are all attorneys with the law firm of Baker
`
`
`
`Botts LLP.
`
`
`
`
`
`
`
`
`
`2
`
`
`
`T-Mobile US, Inc. and T-Mobile USA, Inc.
`
`The individual signing below has the authority to execute this document on
`
`behalf of Petitioners T-Mobile US, Inc. and T-Mobile USA, Inc.:
`
`'
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`
`Date
`
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`
`
`
`TeleComm'unication Systems, Inc.
`
`The individual -signing below has the authority to execute this document on
`
`behalf of Petflioner Te1eCommunication Systems, I.nc.:
`
`
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`
`
`
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`
`Ericssun Inc. and Telefonaktiehola ct LM Ericsson
`
`The individuals signing below have the authority to execute this document
`
`on behalf of Petitioners Ericsson Inc. and Telefonaktiebolaget LM Ericsson:
`
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`
`Ericssnn Inc.
`
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