`
`UNITED STATES PATENT AND TRADEMARK OFFICE
`
`BEFORE THE PATENT TRIAL AND APPEAL BOARD
`
`CELLTRION,INC.,
`Petitioner,
`
`Vv.
`
`REGENERON PHARMACEUTICALS,INC.,
`Patent Owner.
`
`Patent No. 9,254,338
`
`PETITIONER’S POWER OF ATTORNEY
`
`
`
`Pursuant to 37 C.F.R. § 42.10(b), Petitioner Celltrion, Inc., hereby appoints
`
`the practitioners associated with Wilson Sonsini Goodrich & Rosati, Customer
`
`Number 21971, including the following lead and back-up counsel,as its attorneys
`
`to transact all business in the United States Patent & Trademark Office associated
`
`with petitions for inter partes review of U.S. Patent No. 9,254,338:
`
`
`Back-Up Counsel
`Lead Counsel
`
`
`Lora M. Green
`Robert Cerwinski
`
`USPTO Reg. No. 43,541
`Pro hac vice pending
`WILSON SONSINI GOODRICH &||GEMINI LAW LLP
`
`40 W 24" Street, Suite 6N
`ROSATI
`
`1700 K Street, NW,Fifth Floor
`New York, NY 10010
`Washington, D.C., 20006-3817
`Tel.: 917-915-8832
`
`Tel.: 202-791-8012
`Fax: 347-296-3067
`
`Email: rcerwinski@geminilaw.com
`Fax: 202-973-8899
`
`Email: lgreen@wsgr.com
`
`
`
`
`
`
`
`
`
`Back-Up Counsel
`Back-Up Counsel
`Aviv Zalcenstein
`Pro hac vice pending
`GEMINI LAW LLP
`40 W 24" Street, Suite 6N
`New York, NY 10010
`Tel.: 917-915-8832
`Email: azalcenstein@geminilaw.com
`
`Yahn Lin Chu
`USPTOReg.No. 75,946
`WILSON SONSINI GOODRICH &
`ROSATI
`701 Fifth Avenue, Suite 5100
`Seattle, WA 98104-7036
`Tel.: 206-883-2557
`Fax: 206-883-2699
`Email: ychu@wsgr.com
`
`
`
`Brigid Morris
`Pro hac vice pending
`GEMINI LAW LLP
`40 W 24" Street, Suite 6N
`New York, NY 10010
`Tel.: 917-915-8832
`Email: bmorris@geminilaw.com
`
`
`
`For:
`
`Petitioner Celltrion, Inc.
`
`By:
`
`lu
`
`Signature
`
`a i
`
`Kyungha Shin
`Print Name
`
`Vice President
`Title
`
`Date:
`
`December _07_, 2021
`
`-2-
`
`
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