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`BEFORE THE PATENT TRIAL AND APPEAL BOARD
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`ENSIGN US SOUTHERN DRILLING LLC
`Petitioner
`Vv.
`
`C&M OILFIELD RENTALS, LLC
`D/B/A C-MOR ENERGY SERVICES
`Patent Owner of Record
`
`
`
`Case No. IPR2023-00804
`
`Patent No. 10,976,016
`
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`PETITIONER’S UPDATED POWER OF ATTORNEY
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`DMS 304729652v1
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`
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`Petitioner, Ensign US Southern Drilling LLC, hereby files this updated power
`of attorney to additionally appoint Neil Kelly. Therefore, Petitioner, Ensign US
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`Southern Drilling LLC hereby appoints and has appointed the following practitioners
`
`as its attorneys to transact all business in the United States Patent & Trademark Office
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`associated with any inter partes review, post grant review, or other review
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`proceedings before the Patent Trial and Appeal Board of the above-captioned patent:
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`Gregory L. Porter, Reg. No. 40,131 (Lead Counsel)
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`Daniel Shanley, Reg. No. 54,863
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`Neil Kelly (Pro Hac Vice Admission conditionally granted on
`November 27, 2023)
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`and all practitioners associated with PTO Customer Number 23444.
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`I have the
`
`authority to execute this document on behalf of Ensign US Southern Drilling LLC.
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`Ensign US Southern Drilling LLC
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` By:
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`/
`ak Lows 2.
`
`Name: Oustip
`Title: Cones,| Covase| and Corporal€
`
`Date:
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`A)oy tF 202.3
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`eertary
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`DMS304729652v1
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`
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`CERTIFICATE OF SERVICE
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`I certify that today in
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`Ensign US Southern Drilling LLC v. C&M Oilfield Rentals LLC D/B/A C-Mor
`Energy Services., IPR2023-00804
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`I caused to be served a copyof:
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`PETITIONER’S UPDATED POWER OF ATTORNEY
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`Certificate of Service
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`Uponthe following via electronic service to the email addresses below:
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`MLB-CM-IPR-Team(@morganlewis.com
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`Dated: November 27, 2023
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`/Gregory L. Porter!/
`Gregory L. Porter, Reg. No. 40,131
`gregporter(@andrewskurth.com
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`Hunton Andrews Kurth LLP
`600 Travis Ste. 4200
`Houston, TX 77002
`Telephone: 713-449-9687
`Facsimile: 713-220-4285
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`Attorneysfor Petitioner Ensign US Southern Drilling
`LEC
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`DMS304729652v1
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`