`Patent 8,391,298
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`UNITED STATES PATENT AND TRADEMARK OFFICE
`_________________
`BEFORE THE PATENT TRIAL AND APPEAL BOARD
`__________________
`RINGCENTRAL, INC.,
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`Petitioner,
`v.
`ESTECH SYSTEMS, INC.
`
`Patent Owner
`__________________
`Inter Partes Review No. IPR2021-00574
`Patent No. 8,391,298
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`PATENT OWNER’S NOTICE OF APPEAL
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`Filed on behalf of Patent Owner by:
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`John Wittenzellner (Reg. No. 61,662)
`1735 Market Street, Suite A #453
`Philadelphia, PC 19103
`
`Todd E. Landis (Reg. No. 44,200)
`2633 McKinney Ave., Suite 130
`Dallas, TX 75204
`
`WILLIAMS SIMONS & LANDIS PLLC
`
`
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`IPR2021-00574
`Patent No. 8,391,298
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`Notice is hereby given, pursuant to 35 U.S.C. §§ 141, 142, and 319, and 37 C.F.R. §
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`90.2(a), that Patent Owner Estech Systems, Inc. (“Estech”) appeals to the United States Court of
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`Appeals for the Federal Circuit from the Final Written Decision (“FWD”) entered on October 3,
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`2022 (Paper 30), and from all underlying orders, decisions, rulings and opinions that are adverse
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`to Estech, including, without limitation, those within the Decision Granting Institution of Inter
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`Partes Review, entered on October 6, 2021 (Paper 13). In accordance with 37 C.F.R. §
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`90.2(a)(3)(ii), the issues on appeal include, but are not limited to the Patent Trial and Appeals
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`Board’s (“Board”) determinations that claims 1-12 and 17-19 of U.S. Patent No. 8,391,298 are
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`unpatentable; the Board’s consideration and analysis of the expert testimony, prior art, and other
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`evidence in the record; the Board’s decision to institute inter partes review; and the Board’s factual
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`findings, conclusions of law, or other determinations supporting or relating to the above issues.
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`Pursuant to 37 C.F.R. § 90.2(a)(1) and (a)(2), and as reflected in the attached Certificate of
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`Service, this Notice of Appeal is being electronically filed with the Patent Trial and Appeal Board
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`through the Patent Trial and Appeal Case Tracking System (P-TACTS) and the United States
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`Court of Appeals for the Federal Circuit through the CM/ECF System along with the requisite
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`filing fee. A copy is also being mailed to the Office of General Counsel at the U.S. Patent and
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`Trademark Office.
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`Dated: December 2, 2022
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`Respectfully submitted,
`
`By: /John Wittenzellner/
`John Wittenzellner
`Registration No. 61,662
`Counsel for Patent Owner
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`1
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`IPR2021-00574
`Patent No. 8,391,298
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`CERTIFICATE OF SERVICE
`The undersigned certifies that a true and correct copy of this Notice of Appeal
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`was filed electronically with the Director of the United States Patent and Trademark
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`Office, as well as sent via Priority Mail Express from the U.S. Postal Service to the
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`following address:
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`Director of the United States Patent and Trademark Office
`c/o Office of the General Counsel
`Mail Stop 8, Post Office Box 1450
`Alexandria, VA 22313-1450
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`CERTIFICATE OF SERVICE
`The undersigned certifies that a true and correct copy of this Notice of Appeal
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`was filed electronically with the Clerk’s Office of the United States Court of Appeals
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`for the Federal Circuit, as well as sent via FedEx Priority Overnight to the following
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`address:
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`United States Court of Appeals for the Federal Circuit
`717 Madison Place, N.W., Suite 401
`Washington, DC 20005
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`CERTIFICATE OF SERVICE
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`Pursuant to 37 C.F.R. § 42.6, the undersigned certifies that on July 15, 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 Patent Trial and Appeal Case Tracking System (P-TACTS),
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`2
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`as well as via electronic mail to counsel of record for Petitioner at the following
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`IPR2021-00574
`Patent No. 8,391,298
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`addresses:
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`K. Patrick Herman (P52PTABDocket@orrick.com)
`Alyssa Caridis (A8CPTABDocket@orrick.com)
`Christopher J. Higgins (OCHPTABDocket@orrick.com)
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`Respectfully submitted,
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`By: /John Wittenzellner/
`John Wittenzellner
`Registration No. 61,662
`Counsel for Patent Owner
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`3
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