`
`In re Patent of:
`US. Patent No:
`Issue Date:
`Appl. Serial No.:
`Filing Date:
`Title:
`
`Attorney Docket No.: 25979
`
`Mattaway. et al.
`6.009.469
`December 28, 1999
`08!?21316
`September 25. 1996
`GRAPHIC USER INTERFACE FOR INTERNET TELEPHONY
`APPLICATION
`
`Mail Stop Patent Board
`Patent Trial and Appeal Board
`US. Patent and Trademark Office
`
`PO. Box 1450
`
`Alexandria. VA 22313-1450
`
`PETITIONER’S POWER OF ATTORNEY IN AN 1NTER PARTES REVIEW
`
`In addition to any previously filed power of attorney. co-Petitioner. Avaya, Inc.. hereby
`
`also appoints the following practitioners as its attorneys to transact all business in the United
`States Patent & Trademark Office associated with the inter partes review of the above—captioned
`
`patent:
`
`Dorothy P. Whelan. Reg. No. 33.814
`
`Christopher 0. Green. Reg. No. 52,964
`
`and all practitioners associated with PTO Customer Number 26171.
`
`I have the authority to execute this document on behalf ofAvaya. Inc.
`
`Avaya, Inc.
`
`
`
`Title: Associate General Counsel
`Date:
`judg I? 30!:
`
`