`
`BEFORE THE PATENT TRIAL AND APPEAL BOARD
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`IBG LLC,
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`INTERACTIVE BROKERS LLC,
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`TRADESTATION GROUP, INC.,
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`TRADESTATION SECURITIES, INC.,
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`Petitioners
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`V.
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`TRADING TECHNOLOGIES INTERNATIONAL, INC.
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`Patent Owner
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`Patent No. 7,693,768 B2
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`POWER OF ATTORNEY PURSUANT TO 37 C.F.R. § 42.10(b)
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`IBG LLC’S
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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. 7,693,768 B2
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`Pursuant to 37 C.F.R. § 42.10(b), Petitioner IBG LLC, having a principle
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`place of business at One Pickwick Plaza, Greenwich, CT 06830, hereby appoints
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`the practitioners of Customer No. 26111 as its attorneys to transact all business in
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`the United States Patent & Trademark Office associated with the covered business
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`method review of U.S. Patent No. 7,693,768 B2. These attorneys 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 M. 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.
`1100 New York Avenue, N.W.
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`Washington, D.C. 200005
`202.371.2600 (reception)
`202.371.2540 (fascimile)
`rsokohl-PTAB@skgf.com
`lgordon-PTAB@skgf.com
`rbemben-PTAB @skgf.com
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`FOR:
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`44¢
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`SIGNATURE:
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`BY:
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`'
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`I J//44¢/n Ca/mm/a/6;
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`TITLE:
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`ggggc/gzzg éfn/5444 Q:/n/J66
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`DATE:
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`-//-/6
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`2790270_1.DOCX