`Patent 8,391,298
`UNITED STATES PATENT AND TRADEMARK OFFICE
`_________________
`BEFORE THE PATENT TRIAL AND APPEAL BOARD
`__________________
`CISCO SYSTEMS, INC.,
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`Petitioner,
`v.
`ESTECH SYSTEMS, INC.,
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`Patent Owner
`__________________
`Inter Partes Review No. IPR2021-00329
`Patent No. 8,391,298
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`ESTECH SYSTEMS, INC.’S
`POWER OF ATTORNEY
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`IPR2021-00329
`Patent No. 8,391,298
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`Estech Systems, Inc. hereby appoints the following attorneys to represent
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`Patent Owner in the above-captioned inter partes review proceeding and to transact
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`all business in the Patent Trial and Appeal Board of the U.S. Patent and Trademark
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`Office connected therewith:
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`Lead Counsel:
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`Backup Counsel:
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`Todd E. Landis
`WILLIAMS SIMONS & LANDIS PLLC
`2633 McKinney Ave., Suite 130
`Dallas, TX 75204
`Tel: (512) 543-1357
`Fax: (512) 793-9575
`tlandis@wsltrial.com;
`estechcounsel@wsltrial.com
`USPTO Registration No. 44,200
`
`
`John Wittenzellner
`WILLIAMS SIMONS & LANDIS PLLC
`1735 Market Street, Suite A #453
`Philadelphia, PA 19103
`Tel: (512) 543-1373
`Fax: (512) 793-9575
`johnw@wsltrial.com
`USPTO Registration No. 61,662
`
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`Please recognize the following correspondence address (including the
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`identified electronic email addresses) for Patent Owner in this proceeding:
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`WILLIAMS SIMONS & LANDIS PLLC
`327 Congress Avenue, Suite 490, Austin, TX 78701
`Tel.: (512) 543-1354 | Fax: (512) 793-9575
`Todd E. Landis – tlandis@wsltrial.com
`John Wittenzellner – johnw@wsltrial.com
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`IPR202I -A829
`Patent No. 8,391,298
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`The individual signing below has the authority to execute this document on
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`behalf of Patent Owner.
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`Executed on Jrn"4,2021
`
`By:
`Karen'Boyd
`Title: General Counsel, Estech Systems,
`Inc.
`Patent Owner
`Estech Systems, Inc.
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`
`
`IPR2021-00329
`Patent No. 8,391,298
`
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`CERTIFICATE OF SERVICE
`Pursuant to 37 C.F.R. § 42.6, the undersigned certifies that on June 24, 2021,
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`the foregoing document was served on counsel of record for Petitioner by filing this
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`document through the End-to-End System, as well as via electronic mail to counsel
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`of record for Petitioner at the following addresses:
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`Benjamin E. Weed (Benjamin.weed.PTAB@klgates.com)
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`Respectfully submitted,
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`By: /Todd E. Landis/
`Todd E. Landis
`Registration No. 44,200
`Counsel for Patent Owner
`Estech Systems, Inc.
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