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`BEFORE THE PATENT TRIAL AND APPEAL BOARD
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`SHOPIFY, INC.,
`Petitioner
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`v.
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`DDR HOLDINGS, LLC,
`Patent Owner
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`Case IPR2018-01008
`U.S. Patent 9,639,876
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`PATENT OWNER POWER OF ATTORNEY
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`Patent Owner hereby revokes Power of Attorney to Justin Lesko as back-up
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`counsel and provides Power of Attorney to attorney Ian B. Crosby (admitted pro
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`hac vice) to transact all business as its back-up counsel in the United States Patent
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`& Trademark Office in connection with the above-captioned proceeding. The
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`undersigned represents that he has the authority to execute this document on behalf
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`of Patent Owner.
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`Page 2
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`Case No. IPR2019-01008
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`U.S. Patent 9,639,876
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`DDR HOLDINGS, LLC
`Patent Owner
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`By:
`Name: Daniel D. Ross
`Title: Managing Director
`Date: January 18, 2019
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`CERTIFICATE OF SERVICE (37 C.F.R. § 42.6(e)(1))
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`The undersigned hereby certifies that on January 18, 2019, a complete and
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`correct copy of the foregoing PATENT OWNER POWER OF ATTORNEY was
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`served via electronic mail on the following counsel of record for Petitioners:
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`
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`Michael McNamara (Reg. No. 52,017)
`William A. Meunier (Reg. No. 41,193)
`Mintz, Levin, Cohn, Ferris, Glovsky and Popeo, PC
`One Financial Center
`Boston, MA 02111
`DDR_IPR_Service@mintz.com
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`
`
` /Louis J. Hoffman/
`Louis J. Hoffman, Reg. No. 38,918
`LOUIS J. HOFFMAN, P.C.
`7689 East Paradise Lane, Suite 2
`Scottsdale, Arizona 85260
`DDR_IPR@valuablepatents.com
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`