`
`BEFORE THE PATENT TRIAL AND APPEAL BOARD
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`IBG LLC; INTERACTIVE BROKERS LLC; TRADESTATION GROUP,'INC.;
`TRADESTATION SECURITIES, INC.;
`TRADESTATION TECHNOLOGIES, INC.; and IBFX, INC.
`Petitioners
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`V.
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`TRADING TECHNOLOGIES INTERNATIONAL, INC.
`
`Patent Owner
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`Patent NO. 7,676,411
`
`
`INTERACTIVE BROKERS LLC’S
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`POWER OF ATTORNEY PURSUANT TO 37 C.F.R. §42.10(b)
`
`Mail Stop “PA TENTBOARD”
`Patent Trial and Appeal Board
`U.S. Patent and Trademark Office
`
`P.O. BOX 145 0
`
`Alexandria, VA 22313-1450
`
`III"
`
`
`
`U.S. Patent No. 7,676,411
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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
`
`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. 7,676,411. These attorneys
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`include at least:
`
`Lead Counsel:
`
`Back-up Counsel:
`
`Robert E. Sokohl (Reg. No. 36,013)
`Lori A. Gordon (Reg. No. 50,633)
`Richard Bemben (Reg. No. 68,658)
`
`ph: 202.772.8677
`W ph: 202.772.8862
`ph: 202.772.8549
`
`Address:
`
`STERNE, KESSLER, GOLDSTEIN & Fox P.L.L.C.
`1100 New York Avenue, NW
`
`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
`
`lgordon-PTAB @skgf.com
`
`rbemben-P.TAB@skgf.com
`
`FOR:
`
`Interactive Brokers LLC
`
`SIGNATURE:
`
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