`__________________
`
`BEFORE THE PATENT TRIAL AND APPEAL BOARD
`__________________________________________________________________
`
`RINGCENTRAL, INC.,
`Petitioner
`v.
`ESTECH SYSTEMS, INC.,
`Patent Owner
`
`Case IPR2021-00574
`
`US Patent No. 8,391,298
`__________________________________________________________________
`
`PETITIONER’S NOTICE OF CROSS EXAMINATION
`BY DEPOSITION OF VIJAY K. MADISETTI, PH.D.
`__________________________________________________________________
`
`
`
`Pursuant to 37 C.F.R. § 42.53, Petitioner RingCentral, Inc. hereby provides
`
`notice that, pursuant to the agreement between Petitioner and Patent Owner, it will
`
`cross-examine declarant Vijay K. Madisetti, Ph.D. by deposition on March 11, 2022.
`
`The deposition will occur via video conference. The deposition will begin following
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`the conclusion of the deposition in IPR2021-00573, which will begin at 9:00AM ET.
`
`The deposition will be taken before a court reporter, notary public, or other person
`
`authorized by law to administer oaths. The deposition will be recorded
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`stenographically, and the stenographic method will include instant visual display of
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`testimony using LiveNote® or similar software.
`
`Dated: February 22, 2022
`
`Respectfully submitted,
`
`ORRICK, HERRINGTON & SUTCLIFFE LLP
`
`By: /K. Patrick Herman/
`K. Patrick Herman, Reg. No. 75,018
`Email: P52PTABDocket@orrick.com
`51 West 52nd Street
`New York, NY 10019
`Telephone: (212) 506-5000
`
`Alyssa Caridis, Reg. No. 57,545
`Email: A8CPTABDocket@orrick.com
`777 South Figueroa Street, Suite 3200
`Los Angeles, CA 90017-5855
`Telephone: (213) 629-2020
`
`Attorneys for Petitioner
`
`
`
`CERTIFICATE OF SERVICE
`
`The undersigned hereby confirms that the foregoing PETITIONER’S
`
`NOTICE OF CROSS EXAMINATION BY DEPOSITION OF VIJAY K.
`
`MADISETTI, PH.D. was caused to be served on February 22, 2022 via email upon
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`the following counsel of record for Patent Owner:
`
`Todd E. Landis
`WILLIAMS SIMONS & LANDIS PLLC
`2633 McKinney Avenue, Suite 130
`Dallas, TX 75204
`
`John Wittenzellner
`WILLIAMS SIMONS & LANDIS PLLC
`1735 Market Street, Suite A #453
`Philadelphia, PA 19103
`
`tlandis@wsltrial.com
`usccounsel@wsltrial.com
`
`johnw@wsltrial.com
`
`/K. Patrick Herman/
`K. Patrick Herman, Reg. No. 75,018
`Orrick, Herrington & Sutcliffe LLP
`51 West 52nd Street
`New York, NY 10019
`T: 212-506-3596; F: 212-506-5151
`Email: P52PTABDocket@orrick.com
`
`