`
`In re Patent of:
`U.S. Patent No.:
`Issue Date:
`Appl. Serial No.:
`Filing Date:
`Title:
`
`Kemp. II. et al.
`6.772.132
`August 3. 2004
`09/590692
`June 9. 2000
`CLICK BASED TRADING WITH INTUITIVE GRID DISPLAY OF
`MARKET DEPTH
`
`Mail Stop Patent Board
`Patent Trial and Appeal Board
`U.S. Patent and Trademark Office
`P.O. Box 1450
`
`Alexandria. VA 22313-1450
`
`PETITIONER’S POWER OF ATTORNEY IN POST GRANT PROCEEDINGS BEFORE
`??:j:
`THE PATENT TRIAL AND APPEAL BOARD
`
`Petitioners. TradeStation Group. Inc. and TradeStation Securities. Inc., each hereby
`
`appoints the following practitioners as its attorneys to transact all business in the United States
`Patent & Trademark Office associated with any inter partes review. covered business method
`review. post grant review. or other review proceedings before the Patent Trial and Appeal Board
`
`of the above-captioned patent:
`
`John C‘. Phillips. Reg. No. 35.322
`
`and all practitioners associated with PTO Customer Number 26171.
`
`I have the authority to execute this document on behalf of TradeStation Group, Inc. and
`
`TradeStation Securities. Inc.
`
`TradcStatio} Group. Inc. and TradeStation Securities. Inc.