`
`In the United States Patent and Trademark Office
`
`
`
`
`
`
`
`
`Before the Patent Trial and Appeal Board
`
`AMERIGEN PHARMACEUTICALS LIMITED,
`
`Petitioner
`
`v.
`
`UCB PHARMA GMBH
`
`Patent Owner
`
`
`
`
`
`
`
`
`
`
`
`
`U.S. Patent No. 6,858,650
`Filing Date: November 15, 2000
`Issue Date: February 22, 2005
`Title: STABLE SALTS OF NOVEL DERIVATIVES
`OF 3,3-DIPHENYLPROPYLAMINES
`
`
`
`
`
`
`
`
`Inter Partes Review No.: Unassigned
`
`
`
`
`
`
`
`
`Petition for Inter Partes Review of U.S. Patent No. 6,858,650 Under
`35 U.S.C. §§ 311-319 and 37 C.F.R. §§ 42.100 Et Seq.
`
`
`
`
`
`
`
`
`
`
`POWER OF ATTORNEY FOR AMERIGEN PHARMACEUTICALS, LTD.
`
`The undersigned duly authorized representative of Amerigen Pharmaceuticals,
`
`Ltd. hereby appoints the following practitioners as its representatives before the
`
`
`
`1
`
`
`
`
`
`Petition for Inter Partes Review of U.S. Patent No. 6,858,650
`
`
`
`
`
`2