`By:
`Ping Wang, M.D., Esq.
`Gregory Porter, Esq.
`Michael Ye, Ph.D., Esq.
`ANDREWS KURTH, LLP
`
`1350 I Street, NW
`
`Suite 1100
`
`Washington, DC. 20005
`Tel.: (202) 662—2700
`Fax: (202) 662—2739
`Email: PingWang@AndrewsKurth.com
`
`UNITED STATES PATENT AND TRADEMARK OFFICE
`
`BEFORE THE PATENT TRIAL AND APPEAL BOARD
`
`PHIGENIX, INC.
`Petitioner
`
`V.
`
`IMMUNOGEN, INC.
`Patent Owner of
`
`US. Patent No. 8,337,856 to Walter Blattler, et al.
`Issued on December 25, 2012
`Appl. No. 11/949,351 filed on December 3, 2007
`
`IPR Trial No. IPR2014—00676
`
`CERTIFICATE OF SERVICE OF POWER OF ATTORNEY FOR INTER
`
`PARTES REVIEW OF US. PATENT NO. 8,337,856
`
`
`
`
`CERTIFICATE OF SERVICE
`
`The undersigned certifies service pursuant to 37 C.F.R. §§ 42.6 (e) and
`
`42.105 (a) on the Patent Owner by Express Mail of a copy of the POWER OF
`
`ATTORNEY FOR INTER PARTES REVIEW OF US. PATENT NO. 8,337,856 at
`
`the below correspondence address of record for the '856 patent:
`Sughrue Mion/IMMUOGEN
`
`2100 Pennsylvania Avenue, NW
`
`Washington, DC, 20037
`
`With Copy:
`
`ImmunoGen, Inc. Legal Department
`
`830 Winter Street
`
`Waltham, MA 02451477 _
`
`
` ‘ 48,328 '
`
`Attorney for Petitioner
`Phigenix, Inc.
`
`Dated: April 22, 2014
`
`.
`Andrews Kurth, LLP
`
`Suite 1100
`
`1350 I Street, NW.
`
`Washington, DC 20006
`Phone — 202—662-2700
`
`FaX — 202-662-2736
`
`