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`BEFORE THE PATENT TRIAL AND APPEAL BOARD
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`IBG LLC,
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`INTERACTIVE BROKERS LLC,
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`CQG, 1Nc;,
`CQGT, LLC,
`Petitioners
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`I
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`V.
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`TRADING TECHNOLOGIES INTERNATIONAL, INC.
`Patent Owner
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`Patent No. 7,685,055
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`INTERACTIVE BROKERS LLC’S
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`POWER OF ATTORNEY PURSUANT _TO 37 C.F.R. §42.10(b)
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`Mail Stop “PA TENT BOARD”
`Patent Trial and Appeal Board
`U.S. Patent and Trademark Office
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`P.O. Box 1450
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`Alexandria, VA 22313-1450
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`
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`U.S. Patent No. 7,685,055
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`Pursuant to 37 C.F.R. § 42.l0(b), Petitioner Interactive Brokers LLC, having
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`a principal place of business at One Pickwick Plaza, Greenwich, CT 06830, hereby
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`appoints the practitioners of Customer No. 26111 as its attorneys to transact all
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`business in the United States Patent & Trademark Office associated with the
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`covered business method review of U.S. Patent No. 7,685,055. These attorneys
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`include at least:
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`Lead Counsel:
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`Back-up Counsel:
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`Robert E. Sokohl (Reg. No. 36,013)
`Lori A. Gordon (Reg. No. 50,633)
`Richard Bemben (Reg. No. 68,658)
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`ph: 202.772.8677
`ph: 202.772.8862
`ph: 202.772.8549
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`Address:
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`STERNE, KESSLER, GOLDSTEIN & 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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`202.371.2600 (reception)
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`202.371.2540 (facsimile)
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`rsokohl—PTAB @skgf.com
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`lgordon—PTAB@skgf.com
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`rbemben—PTAB @skg£com
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`FOR:
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`Interactive Brokers LLC
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`SIGNATURE:
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`BY:
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`TITLE:
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`65'“f‘76Z Q (/4651
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`DATE:
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