`__________
`
`BEFORE THE PATENT TRIAL AND APPEAL BOARD
`__________
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`DYNAENERGETICS US, INC.
`DYNAENERGETICS GMBH & CO. KG,
`Petitioners,
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`v.
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`GEODYNAMICS, INC.,
`Patent Owner.
`__________
`
`Case IPR2017-02008
`Patent 8,220,394
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`FIRST AMENDED
`POWER OF ATTORNEY
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`Dear Sir/Madam:
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`The undersigned hereby appoints the following attorneys and/or agents
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`to prosecute the above captioned Inter Partes Review and transact all business in
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`the U.S. Patent and Trademark Office connected herewith:
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`All practitioners at Customer Number: 50-0392 .
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`Address all communications to:
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`Theodore G. Baroody, Esq.
`CARSTENS & CAHOON, LLP
`13760 Noel Road, Suite 900
`Dallas, Texas 75240
`(Lead Counsel)
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`Address all e-mails and telephone calls to lead and back-up counsel
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`(each associated with the above Customer Number), listed below:
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`Theodore (Ted) G. Baroody (Lead Counsel, PTO Reg. No. 45,417)
`baroody@cclaw.com
`ph: 972-367-2001
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`Shaukat Karjeker (Backup Counsel, PTO Reg. No. 34,039)
`karjker@cclaw.com
`ph: 972-367-2001
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`CARSTENS & CAHOON, LLP
`13760 Noel Road, Suite 900
`Dallas, Texas 75240
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`The undersigned also appoints the following as back-up counsel:
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`Scott W. Hejny (PTO Reg. 45,882)
`MCKOOL SMITH, P.C.
`300 Crescent Court
`Suite 1500
`Dallas, TX 75201
`shejny@mckoolsmith.com
`ph: 214.978.4241
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`
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`For: GEODynamics, Inc.
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`__________________________
`Name:
`
`Title:
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`Dated: November ___, 2017
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`3
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