`__________________
`
`BEFORE THE PATENT TRIAL AND APPEAL BOARD
`__________________
`
`
`SAMSUNG ELECTRONICS CO., LTD.,
`Petitioner
`
`
`v.
`
`
`DEMARAY LLC,
`Patent Owner
`
`__________________
`
`
`Case IPR2021-01091
`
`U.S. Patent No. 7,381,657
`Title: BIASED PULSE DC REACTIVE SPUTTERING OF OXIDE FILMS
`Issue Date: June 3, 2008
`
`__________________
`
`
`POWER OF ATTORNEY FOR PETITIONER
`SAMSUNG ELECTRONICS CO., LTD.
`
`
`
`
`
`
`
`Mail Stop Patent Board
`Patent Trial and Appeal Board
`U.S. Patent and Trademark Office
`P.O. Box 1450
`Alexandria, VA 22313-1450
`
`
`
`
`
`Petitioner Samsung Electronics Co., Ltd. hereby appoints the registered
`
`practitioners associated with Customer Number 132,593 to represent
`
`it and to
`
`transact all business in the Patent Trial and Appeal Board of the United States Patent
`
`and Trademark Office in connection with the above—captioned Inter Partes Review
`
`of US. Patent No. 7,381,657. Petitioner hereby designates the following lead and
`
`backup counsel:
`
`
`
`
`
`Lead Counsel
`
`Back-u Counsel
`
`Cosmin Maier (Reg. No. 75,387)
`cmaier@desmaraisllp.com
`DESMARAIS LLP
`230 Park Avenue
`
`Christopher R. O’Brien (Reg. No.
`63,208)
`cobrien@desmaraisllp.com
`DESMARAIS LLP
`
`New York, NY 10169
`212-351-3400 (telephone)
`212-351-3401 (facsimile)
`
`1701 Pennsylvania Avenue NW
`Washington, DC, 20006
`202-451-4900 (telephone)
`
`202-451-4901 (facsimile)
`
`Yung-Hoon Ha (Reg. No. 56,368)
`yha@desmaraisllp.com
`DESMARAIS LLP
`
`230 Park Avenue
`
`New York, NY 10169
`
`212-3 51-3400 (telephone)
`212-351-3401 (facsimile)
`
`
`
`
` Ema /C7
`
`Signature
`
`Date
`
`-1625I
`
`20 Hymn C;
`
`/6}‘m
`
`Name
`
`Mal
`(
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`