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`
`
`UNITED STATES PATENT AND TRADEMARK OFFICE
`_____________________
`
`BEFORE THE PATENT TRIAL AND APPEAL BOARD
`_____________________
`
`
`PHIGENIX, INC.
`Petitioner
`
`v.
`
`IMMUNOGEN, INC.
`Patent Owner
`
`_____________________
`
`IPR2014-00676
`Patent 8,337,856
`_____________________
`
`IMMUNOGEN, INC.’S UPDATED POWER OF ATTORNEY
`
`
`
`
`
`
`
`Mail Stop "PATENT BOARD"
`Patent Trial and Appeal Board
`U.S. Patent and Trademark Office
`P.O. Box 1450
`Alexandria, VA 22313-1450
`
`
`
`

`

`ImmunoGen, Inc.'s Updated Power of Attorney
`
`Pursuant to 37 C.F.R. § 42.10(b), Patent Owner, ImmunoGen, Inc., having a
`
`principal place of business at 830 Winter Street, Waltham, MA 02451-1477, hereby
`
`appoints the following practitioners as additional counsel to transact all business in
`
`the United States Patent & Trademark Office associated with an interpartes review
`
`ofU.S. Patent No. 8,337,856:
`
`Address:
`
`Byron L. Pickard (Reg. No. 65,172) phone: 202-772-8521
`Olga A. Partington (Reg. No. 65,326) phone: 202472-8626
`STERNE, KESSLER, GOLDSTEIN & Fox P.L.L.C.
`
`1100 New York Avenue, NW.
`
`Washington, DC 20005
`
`202.371.2600 (reception)
`
`202.371.2540 (facsimile)
`
`eellison-PTAB@skgf.com
`
`esteffe-PTAB@skgf.com
`bpickard-PTAB@skgf.com
`0partington—PTAB@skgf.com
`
`Eldora L. Ellison (Reg. No. 39,967) and Eric K. Steffe (Reg. No. 36,688) remain
`
`counsel for ImmunoGen, Inc.
`
`
`FOR: ImmunoGen Inc.
`
`SIGNATURE: 9214 % (QE:¥
`
`BY: Jose h J. Kenn
`
`‘
`
`TITLE: Chief Patent Counsel and Asst. Secretam
`DATE:
`Co
`193/15”
`
`

`

`CERTIFICATION OF SERVICE (37 C.F.R. § 42.6(e))
`
`
`
`The undersigned hereby certifies that the above-captioned ImmunoGen,
`
`Inc.’s Updated Power of Attorney was served in its entirety on June 19, 2015, upon
`
`the following parties via electronic mail:
`
`
`
`
`Ping Wang
`
`ANDREWS KURTH, LLP
`1350 I Street NW, Suite 1100
`Washington, DC 20005
`
`
`Tel: (202) 662-3042
`
`
`Fax: (202) 662-3729
`
`
`PingWang@andrewskurth.com
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`Gregory Porter
`ANDREWS KURTH, LLP
`600 Travis, Suite 4200
`Houston, TX 77002
`Tel: (713) 220-4621
`Fax: (713) 220-4257
`GregPorter@andrewskurth.com
`
` STERNE, KESSLER, GOLDSTEIN & FOX P.L.L.C.
`
`/Eldora L. Ellison/
`
`
`
`
` Eldora L. Ellison, Ph.D. (Reg. No. 39,967)
`Date: June 19, 2015
` Lead Attorney for ImmunoGen, Inc.
`
`
`
`
`
`1100 New York Avenue, N.W. Washington, D.C.20005-3934
`(202) 371-2600
`
`1846325.2
`
`
`
`
`
`
`
`

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