`
`UNITED STATES PATENT AND TRADEMARK OFFICE
`
`BEFORE THE PATENT TRIAL AND APPEAL BOARD
`
`IBG LLC and INTERACTIVE BROKERS LLC,
`Petitioners,
`
`V.
`
`TRADING TECHNOLOGIES INTERNATIONAL, INC.,
`Patent Owner.
`.
`
`Patent No. 7,783,556
`
`PETITIONERS’ IBG LLC AND INTERACTIVE -BROKERS LLC,
`
`POWER OF ATTORNEY
`
`
`
`Pursuant to 37 C.F.R. § 42.10(a) and (b), Petitioners, IBG LLC and
`
`Interactive Brokers LLC, hereby appoint the following practitioners as attorneys to
`
`act on Petitioners’ behalf and to transact all business in the United States Patent &
`
`Trademark Office associated with a petition for covered business method review of
`
`U.S. Patent No. 7,783,556:
`
`lM:cla¢n.iR;g1t¢ ‘R
`USPTO Reg. No. 61,836
`USPTO Reg. No. 52,182
`
`WILSON SONSINI GOODRICH WILSON SONSINI GOODRICH &
`
`
`
`& ROSATI
`
`V
`
`ROSATI
`
` MatthewiA. Ariigi;-.1111
`
`
`
`701 Fifth Avenue, Suite 5100
`Seattle, WA 98104
`Tel.: 206-883-2529
`
`Fax: 206-883-2699
`
`Email: mrosato I ws
`
`
`
`650 Page Mill Road
`Palo Alto, CA 94304
`
`
` Tel.: 650-354-4154
`
`Fax: 650-493-6811
` 1‘.COIl’1
`Email: mar enti a ws
`
`
`
`
`Robert E. Sokohl
`USPTO Reg. No. 36,013
`
`
`STERNE, KESSLER, GOLDSTEIN
`& FOX P.L.L.C.
`
`
`
`
`
`
`
`
`
`
`
`
`
`1100 New York Ave. NW, Suite 600
`
`Washington, DC 20005
`Te1.: 202-772-8677
`
`Fax: 202-371-2540
`
`
`
`
`
`
`Email: RSOKOHL
`
`
`
` sk
`
` f.com-
`
`By: M "
`
`For: IBG LLC and Interactive Brokers LLC
`
`Name: William Cummings
`
`Title: Associate General Counsel
`
`Date: 2-233 /6