`
`In the Inter Partes Review of:
`
`US. Patent N0.: 8,337,856
`
`Issue Date: December 25, 2012
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`Appl. Serial N0.:
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`1 1/949,351
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`Filing Date: December 3, 2007
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`Title: METHODS OF TREATMENT USING ANTI-ERBB ANTlBODY—MAYTANSINOID
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`CONJUGATES
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`PETITIONER’S POWER OF ATTORNEY IN AN INTER PARTES REVIEW
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`Petitioner, Phigenix, Inc., hereby appoints the following practitioners as its attorneys to
`transact all business in the United States Patent & Trademark Office associated with the above—
`
`captioned Inter Partes Review.
`
`
`LEAD COUNSEL
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`BACK-UP COUNSEL
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`
`
`Gregory Porter, Esq., Reg. No. 40,131
`Ping Wang, M.D., Esq., Reg. No. 48,328
`Andrews Kurth, LLP
`Andrews Kurth, LLP
`600 Travis, Suite 4200
`1350 I Street NW, Suite 1100
`Houston, TX 77002
`Washington, DC. 20005
`Phone No. (713) 220-4621
`Phone No. (202) 662-3042
`Fax No. (713) 2204257
`Fax No. (202) 662-3729
`
`Email: PingWang@andrewskurth.com
`Email: GregPorter@andrewskurth.com
`
`
`The individual signing below has the authority to execute this document on behalf of
`
`Petitioner Phigenix, Inc.
`
`Petitioner Phigenix, In .
`
`
`
`By/
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`Name: Carlton D. Donald, Ph.D.
`
`Title: President and CEO
`
`Date:
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`4
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`4
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