`Patent No. 8,391,298
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`UNITED STATES PATENT AND TRADEMARK OFFICE
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`BEFORE THE PATENT TRIAL AND APPEAL BOARD
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`RingCentral Inc.,
`Petitioner,
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`v.
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`Estech Systems, Inc,
`Patent Owner
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`PATENT OWNER’S REQUEST FOR ORAL ARGUMENT IN THE INTER
`PARTES REVIEW OF U.S. PATENT NO. 8,391,298
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`Filed on behalf of Patent Owner by:
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`Todd E. Landis (Reg. No. 44,200)
`2633 McKinney Ave., Suite 130
`Dallas, TX 75204
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`John Wittenzellner (Reg. No. 61,662)
`1735 Market Street, Suite A #453
`Philadelphia, PA 19103
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`WILLIAMS SIMONS & LANDIS PLLC
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`IPR2021-00574
`Patent No. 8,391,298
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`PATENT OWNER’S REQUEST FOR ORAL ARGUMENT
`Pursuant to 37 C.F.R. § 42.70 (a), Patent Owner hereby respectfully requests
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`an oral argument in IPR 2021-00574. Pursuant to the Board’s Scheduling Order
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`(Paper 14), the oral argument is scheduled for July 12, 2022. Patent Owner requests
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`that each party be provided with one hour of argument time.
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`Specifically, but not by way of waiver of any unenumerated issues, Patent
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`Owner requests oral argument to address the following:
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`I.
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`The grounds on which the IPR of the ’298 Patent was instituted,
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`including the issues and evidence raised in the parties’ briefing and supporting
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`declarations and exhibits;
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`II. Any issues specified by Petitioner in request for oral argument;
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`III. Rebuttal to Petitioner’s presentation on all matters;
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`IV. Any procedural and evidentiary issues raised by the parties;
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`V. Any additional issue the parties raise or propose to raise at or before the
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`oral argument; and
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`VI. Any additional issues on which the Board seeks information or
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`clarification.
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`DATED: May 25, 2022
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`IPR2021-00574
`U.S. Patent No. 8,391,298
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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
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`-2-
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`IPR2021-00574
`U.S. Patent No. 8,391,298
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`CERTIFICATE OF SERVICE
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`Pursuant to 37 C.F.R. § 42.6, the undersigned certifies that on May 25, 2022,
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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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`K. Patrick Herman (P52PTABDocket@orrick.com)
`Alyssa Caridis (A8CPTABDocket@orrick.com)
`Clement S. Roberts (PTABDocketC1R1@orrick.com)
`Robert L. Uriarte (PTABDocketRXZ@orrick.com)
`Li Shen (PTABDocketL6S6@orrick.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
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