`
`BEFORE THE PATENT TRIAL AND APPEAL BOARD
`
`ARGENTUM PHARMACEUTICALS LLC,
`Petitioner
`
`v..
`
`ALLERGAN, INC.,
`Patent Owner
`
`Patent No. 8,6291 1 1
`Patent No. 8,633,162
`Patent No. 8,642,556
`Patent No. 8,648,048
`Patent No. 8,685,930
`Patent No. 9,248,191
`
`PETITIONER’S POWER OF ATTORNEY
`
`
`
`Argentum Pharmaceuticals LLC hereby appoints Matthew J. Dowd (Reg. No.
`
`47,534) and/or Practitioner(s) associated with Customer Number 3 8598 (Andrews
`
`Kurth LLP) as its attorneys to transact all business in the U. S. Patent & Trademark
`
`Oflice in connection with any inter partes review and/or ex parte reexamination of
`
`the captioned patents, including the appointment of lead and backup counsel.
`
`FOR:
`
`Argentum Pharmaceuticals LLC
`
`NAME:
`
`Thomas MacAl1ister J.D. Ph.D.
`
`
`
`TITLE:
`
`SIGNATURE:
`
`Director
`
` 1
`
`/iv
`
`/ /'
`vvt c 20