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`_______________________________
`
`BEFORE THE PATENT TRIAL AND APPEAL BOARD
`_______________________________
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`US ENDODONTICS, LLC,
`Petitioner
`
`v.
`
`GOLD STANDARD INSTRUMENTS, LLC,
`Patent Owner
`
`_______________________________
`
`Case No. PGR2015-00019
`U.S. Patent No. 8,876,991, B2
`_______________________________
`
`REVISED PETITIONER POWER OF ATTORNEY
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`8266160v.1
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`
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`Revised Petitioner Power of Attorney
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`Pursuant to 37 C.F.R. 42.10(b), US Endodontics, LLC hereby withdraws its previous
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`appointment of Practitioners associated with Customer Number 26646, and hereby appoints
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`Practitioners associated with Customer Number 135806, as its attorneys to prosecute the
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`aforementioned proceeding, and to transact all business in the United States Patent and
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`Trademark Office concerned therewith, including the appointment of lead and backup counsel.
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`Please recognize the correspondence address (including any electronic email address) for the
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`above-identified Post Grant Review proceeding number to be the address associated with the
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`appointed lead and backup counsel.
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`The undersigned, whose title is supplied below, is authorized to act on behalf of US
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`Endodontics, LLC.
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`Dated: November 11, 2015
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`US Endodontics, LLC
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`C:::i::12:::____,_,<::____——————,
`
`By:
`Name: Charles J. Goodis
`Title: Member
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`8266l60v.l
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`
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`Certificate of Service
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`Pursuant to 37 C.F.R. § 42.6(e), the undersigned certifies that on November
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`12, 2015, the foregoing Revised Petitioner Power of Attorney was served via e-
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`mail upon the following counsel of record for the Patent Owner:
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`Joseph A. Hynds
`(jhynds@rothwellfigg.com)
`R. Elizabeth Brenner-Leifer
`(ebrenner@rothwellfigg.com)
`Steven Lieberman
`(slieberman@rothwellfigg.com)
`Jason M. Nolan
`(jnolan@rothwellfigg.com)
`Derek F. Dahlgren
`(ddahlgren@rothwellfigg.com)
`Rothwell, Figg, Ernst & Manbeck, P.C.
`607 14th Street, N.W., Suite 800
`Washington, DC 20005
`
`/Abhishek Bapna/
`Abhishek Bapna (Reg. 64,049)
`Patterson Belknap Webb & Tyler LLP
`1133 Avenue of the Americas
`New York, NY 10036-6710
`
`8266160v.1