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`IN THE UNITED STATES PATENT TRIAL AND APPEAL BOARD
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`PAR PHARMACEUTICAL, INC.
`Petitioner
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`V.
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`HYPERION THERAPEUTICS, INC.
`Patent Owner
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`CASE IPR: UNASSIGNED
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`PAR PHARMACEUTICAL, INC.’S POWER OF ATTORNEY
`FOR INTER PARTES REVIEW OF
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`U.S. PATENT NOS. 8,642,012 AND 8,404,215
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`Mail Stop Patent Board
`Patent Trial and Appeal Board
`U.S. Patent and Trademark Office
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`P.O. Box 1450
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`Alexandria, VA 22313-1450
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`
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`IPR of U.S. Patent Nos. 8,642,012 AND 8,404,215
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`POWER OF ATTORNEY
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`I hereby appoint Practitioner(s) associated with Customer Number 24573
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`as my attomey(s) to prosecute the aforementioned proceeding, and to transact
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`all business in the United States Patent and Trademark Office connected
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`therewith,
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`including the appointment of lead and backup counsel.
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`Please
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`recognize the correspondence address (including any electronic mail address)
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`for the above-identified Inter Partes Review proceeding numbers to be the
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`address associated with the appointed lead and backup counsel.
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`Dated: L‘/Z1‘/A 3 0i Sf
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`David Silverstein
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`Par Pharmaceutical, Inc.
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`
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`IPR of U.S. Patent Nos. 8,642,012 AND 8,404,215
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`Certification of Service Under 37 C.F.R. § 42.6(e)(4)
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`A copy of this Power of Attorney has been served to the Patent Owner via
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`
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`
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`Overnight Mail at the following correspondence address, on this 29th day of
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`April, 2015:
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`Perkins Coie LLP - LOS General
`P.O. Box 1247
`Seattle, WA 98111-1247
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`
`
`
`
` /Michael J. Freno/
`Reg. No. 57,163
`Michael J. Freno
`Customer No. 24573
`Date: April 29, 2015
`K&L Gates LLP
`e-mail: michael.freno@klgates.com
`telephone number: (206) 370-7947
`fax number: (206) 623-7022
`925 Fourth Avenue, Suite 2900
`Seattle, WA 98104
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`By:
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`3