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`BEFORE THE PATENT TRIAL AND APPEAL BOARD
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`BUTAMAXTM ADVANCED BIOFUELS LLC
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`Petitioner
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`V.
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`GEVO, INC.
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`Patenr Owner
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`CASE IPR: Unassigned
`Patent No. 8,273,565
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`BUTAMAXTM ADVANCED BIOFUELS LLC’S
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`POWER OF ATTORNEY
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`(INTER PARTES REVIEW OF US. PATENT N0. 8,273,565)
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`Mail Stop “PATENT BOARD”
`Patent Trial and Appeal Board
`US. Patent and Trademark Office
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`PO. BOX 1450
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`Alexandria, VA 22313—1450
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`
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`BUTAMAXTM ADVANCED BIOFUELS LLC Power of Attorney for
`Inter Partes Review of US. Patent No. 8,273,565
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`Pursuant to 37 C.F.R. § 42.10(b), Petitioner, ButamaxTM Advanced Biofuels
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`LLC, a Delaware corporation, having a principal place of business at Route 141 &
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`Henry Clay, PO Box 80356, Experimental Station — Bldg. 356, Wilmington, DE
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`19880, hereby appoints the following practitioners as its attorneys to transact all
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`business in the United States Patent & Trademark Office associated with an inter
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`partes review of US. Patent No. 8,273,565:
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`Lead Counsel:
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`Deborah A. Sterling (Reg. No. 62,732) phone: 202.772.8501
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`Back-up Counsel: Peter A. Jackman (Reg. No. 45,986) phone: 202.772.8582
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`Address:
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`STERNE, KESSLER, GOLDSTErN & Fox P.L.L.C.
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`1100 New York Avenue, NW
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`Washington, DC 20005
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`202.37 1 .2600 (reception)
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`202.37 1.2540 (facsimile)
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`dsterlin—PTAB @skgf.com
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`pj ackman—PTAB @ skgf.com
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`FOR; ButamaxTM Advanced Biofuels LLC
`SIGNATURE:
`7
`
`BY: 153$; I. fies
`TITLE: 1!? g; CSTO
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`DATEM
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`
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`BUTAMAXTM ADVANCED BIOFUELS LLC Power of Attorney for
`Inter Partes Review of US. Patent No. 8,273,565
`
`
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`CERTIFICATION 6F SERVICE 37 C.F.R. 42.6 e 42.105 21
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`The undersigned hereby certifies that
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`the above—captioned “ButarnaxTM
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`Advanced Biofuels LLC’s Power of Attorney for Inter Partes Review of US. Patent
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`No. 8,273,565 Under 37 CPR. § 42.10(b),” was served in its entirety on August 30,
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`2013, upon the following party Via FedEX®z
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`COOLEY LLP
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`ATTN: Patent Group
`1299 Pennsylvania Ave, NW
`Suite 700
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`Washington, DC 20004
`Patent owner ’S correspondence
`address ofrecordfor
`US. Patent No. 8,273,565
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`Date: August 30, 2013
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`l 100 New York Avenue, NW.
`Washington, D.C.20005-3934
`(202) 371-2600
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`1669027_1.DOCX
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`STERNE, KESSLER, GOLDSTEIN & FOX
`P.L.L.C.
`
`
`
`ling, PhD.
`Deborah A.
`Attorney for Petitioner
`Registration No. 62,732
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`