`
`BEFORE THE PATENT TRIAL AND APPEAL BOARD
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`ARGENTUM PHARMACEUTICALS LLC,
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`Petitioner,
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`V.
`
`MERCK PATENTGESELLSCHAFT MIT
`BESCHRANKTER HAFTUNG,
`Patent Owner.
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`Case IPR2018-00423
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`US. Patent 8,673,921
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`POWER OF ATTORNEY
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`UNDER 37 C.F.R. §42.10
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`
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`IPR2018-00423
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`Patent No. 8,673,921
`Patent Owner Power of Attorney
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`Patent owner Merck Patentgesellschaft Mit Beschrankter Haftung hereby
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`appoints the following attorneys and/or agents to prosecute the above captioned
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`inter partes review and transact all business in the US. Patent and Trademark
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`Office connected herewith:
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`o All practitioners at Customer Number 23483
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`0 David B. Bassett, Pro hac vice to be filed
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`0 Vinita Ferrera, Pro hac vice to be filed
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`Please address all communications to:
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`Wilmer Cutler Pickering Hale and Dorr LLP
`60 State Street
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`Boston, MA 02109
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`Telephone: 617-526-6000
`Facsimile: 6 l 7-526-5 000
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`Please address all emails and telephone calls to lead and back—up counsel as
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`listed below.
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`0 Lead Counsel:
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`Emily R. Whelan, Reg. No. 50,391
`Emily.Whelan@wilmerhale.com
`Telephone: 617—526-6567
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`
`
`IPR2018—00423
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`Patent No. 8,673,921
`Patent Owner Power of Attorney
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`0 Back-up Counsel:
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`Deric X. Geng, Ph.D., Reg. No. 73,434
`Deric.Geng@wilmerhale.com
`Telephone: 617—526-6026
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`David B. Bassett, Pro hac vice to befiled
`David.Bassett@wilmerhale.com
`Telephone: 212-230—8858
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`Vinita Ferrera, Pro hac vice to be filed
`Vinita.Ferrera@wilmerhale.com
`Telephone 617-526-6208
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`The individual listed below has the authority to execute this document on
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`behalf of Merck Patentgesellschaft Mit Beschréinkter Haftung.
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`For: Merck Patentgesellschaft Mit Beschrankter Haftung
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`gm Dated:
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`January/g? 2018
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`Name: Dr. Arno Hartmann
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`Title: Vice President, Head of Patents Healthcare
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`