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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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`____________________
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`Patent No. 6,772,132
`_____________________
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`IBFX, INC.’S
`POWER OF ATTORNEY PURSUANT TO 37 C.F.R. §42.10(b)
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`Mail Stop “PATENT BOARD”
`Patent Trial and Appeal Board
`U.S. Patent and Trademark Office
`P.O. Box 1450
`Alexandria, VA 22313-1450
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`BEFORE THE PATENT TRIAL AND APPEAL BOARD
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`U.S. Patent No. 6,772,132
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`Pursuant to 37 C.F.R. § 42.10(b), Petitioner IBFX, Inc., having a principal
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`place of business at 3165 E. Millrock Drive, Suite 200 Salt Lake City, UT 84121,
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`hereby appoints the practitioners of Customer No. 26111 as its attorneys to transact
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`all business in the United States Patent & Trademark Office associated with the
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`covered business method review of U.S. Patent No. 6,772,132. 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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`1 100 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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`rbernben-PTAB@skgf.com
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`IBFX Inc.
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`FOR:
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`SIGNATURE:
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`BY:
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`7U—.E_
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`TITLE:
`DATE:
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