`
`BEFORE THE PATENT TRIAL AND APPEAL BOARD
`
`IBG LLC,
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`INTERACTIVE BROKERS LLC,
`
`’
`
`TRADESTATION GROUP, INC.,
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`TRADESTATION SECURITIES, INC.,
`Petitioners
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`V.
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`TRADING TECHNOLOGIES INTERNATIONAL, INC.
`Patent Owner
`.
`
`Patent No. 7,693,768 B2
`
`INTERACTIVE BROKERS LLC’S
`
`POWER OF ATTORNEY PURSUANT TO 37 C.F.R. § 42.10(b)
`
`Mail Stop “PA TENT BOARD”
`Patent Trial and Appeal Board
`U.S. Patent and Trademark Office
`
`P.O. Box 1450
`Alexandria, VA 22313-1450
`
`
`
`U.S. Patent No. 7,693,768 B2
`
`Pursuant to 37 C.F.R. § 42.10(b), Petitioner Interactive Brokers LLC, having
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`a principle 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. 7,693,768 B2. 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 M. Bemben (Reg. No. 68,658)
`
`ph: 202.772.8677
`ph: 202.772.8862
`ph: 202.772.8549
`
`Address:
`
`STERNE, KESSLER, GOLDSTEIN & Fox P.L.L.C.
`1100 New York Avenue, N.W.
`
`Washington, D.C. 200005
`202.371.2600 (reception)
`202.371.2540 (fascimile)
`rsokohl-PTAB @skgf.com
`1gordon—PTAB@skgf.com
`rbemben—PTAB@skgficom
`
`FOR: A/76¢¢m «xi Km/45¢; z¢¢
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`SIGNATURE:
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`2790272_1.DOCX ’