Microsoft Corporation vs. ToutVirtual, Inc.

Explore the PTAB proceeding IPR2026-00296 filed by Microsoft Corporation on 2026-03-10. This includes filing dates, application numbers, tech centers, patent numbers, and current case status.

Proceeding Overview

Proceeding Number

IPR2026-00296

Filing Date

2026-03-10

Accorded Filing Date

2026-03-10

Institution Decision Date

2026-08-06

Last Modified Date

2026-09-09

Proceeding Type

IPR

Termination Date

2026-08-06

Trial Status

Discretionary Denial

Parties & Counsel

Petitioner

Microsoft Corporation

Represented By

Renner, W. Karlet al

Patent Owner / Respondent

ToutVirtual, Inc.

Represented By

Hannah, Jameset al

Tribunal & Venue

Tribunal

Patent Trial and Appeal Board (USPTO)

Technology Center

TC 2400 - Computer Networks, Multiplex & Cybersecurity

Patent Information

1 Patent Involved

Respondent Application Number 15201087

Respondent Patent Number 10810050

External Links

Espacenet

Google Patents

Respondent Inventor Vipul Pabari

Respondent Tech Center TC 2400 - Computer Networks, Multiplex & Cybersecurity

Address and Attorney/Agent Information

3 Registered Practitioners

Power of Attorney & Correspondence

Firm / Entity Name Haverstock & Owens, A Law Corporation

Customer Number 28960

Address 162 NORTH WOLFE ROAD, SUNNYVALE, CA, 94086, UNITED STATES

Attorney / Agent Information

Reg #	Name	Phone
37902	Jonathan Owens	408-530-9700
44153	David Hill	408-530-9700
56418	Lucas Myslinski	408-530-9700

Proceeding Documents

Patent Owner's Updated Mandatory Notices Under 37 C.F.R. 42.8(a)(3) NOTICE

2026-08-21 FILING PARTY: PATENT OWNER

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Director Discretionary Decision: Deny RESPONSE

2026-08-06 FILING PARTY: BOARD

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Patent Owner's Preliminary Sur-Reply OTHER

2026-07-17 FILING PARTY: PATENT OWNER

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Petitioner's Preliminary Reply OTHER

2026-07-14 FILING PARTY: PETITIONER

Download

1066

Petitioner’s Email to Patent Owner Regarding Unconditional Withdrawal of Preliminary Indefiniteness Contentions Exhibit

2026-07-14 FILING PARTY: PETITIONER

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Microsoft Corporation vs. ToutVirtual, Inc.

Proceeding Overview

Parties & Counsel

Petitioner

Microsoft Corporation

Represented By

Patent Owner / Respondent

ToutVirtual, Inc.

Represented By

Tribunal & Venue

Patent Information

Address and Attorney/Agent Information

Power of Attorney & Correspondence

Attorney / Agent Information

Proceeding Documents

Patent Owner's Updated Mandatory Notices Under 37 C.F.R. 42.8(a)(3) NOTICE

Director Discretionary Decision: Deny RESPONSE

Patent Owner's Preliminary Sur-Reply OTHER

Petitioner's Preliminary Reply OTHER

Petitioner’s Email to Patent Owner Regarding Unconditional Withdrawal of Preliminary Indefiniteness Contentions Exhibit

e-mail extending deadline Exhibit

Email Correspondence Exhibit

DocketNavigator Statistics, Courts Texas Eastern District; Judges Robert W. Schroeder, III Exhibit

Smith, The Golden Opportunity for American AI. Microsoft On the Issues Exhibit

Microsoft Corporation, Form 10-Q for the Quarterly Period Ended March 31, 2026 Exhibit

General Services Administration, Multi-Billion Dollar GSA OneGov Agreement with Microsoft Exhibit

DocketNavigator Statistics, Courts Texas Eastern District; Case Filing Date On or After Jan. 1st, 2023 Exhibit

Datacenter Investments Drive Economic Growth in Central Washington Exhibit

What is Azure Government Exhibit

Excerpts of the Prosecution History of the U.S. Pat. No. 8,799,431 Exhibit

Petitioner's Opposition to Patent Owner's Request for Discretionary Denial RESPONSE

Microsoft Corporation, Microsoft FY25 Second Quarter Earnings Conference Call Exhibit

CVE-2009-4849 Detail Exhibit

Toutvirtual Virtualiq 3.2 Security Vulnerabilities Exhibit

Ex. 2027 Exhibit

Patent Owner's Preliminary Response POPR

Nielson et al., Microsoft FY25 Fourth Quarter Earnings Conference Call Exhibit

Ex. 2028 Exhibit

Email Correspondence Exhibit

Standard Acknowledgement for Access to Protective Order Material OTHER

Ex. 2003 Exhibit

Ex. 2022, part 1 Exhibit

Ex. 2017 Exhibit

Ex. 2007 Exhibit

Ex. 2011 Exhibit

Ex. 2022, part 2 Exhibit

Ex. 2008 Exhibit

Ex. 2014 Exhibit

Ex. 2012 Exhibit

Ex. 2010 Exhibit

Patent Owner's Request for Discretionary Denial - Redacted RESPONSE

Ex. 2013 Exhibit

Ex. 2021 Exhibit

Ex. 2023 Exhibit

Ex. 2002 - Redacted Exhibit

Ex. 2004 Exhibit

Ex. 2001 Exhibit

Ex. 2026 Exhibit

Ex. 2006 Exhibit

Ex. 2018 Exhibit

Ex. 2015 Exhibit

Ex. 2005 Exhibit

Ex. 2009 Exhibit

Ex. 2016 Exhibit

Motion to Seal MOTION

Petitioner's Updated Exhibit List NOTICE

Petitioner's Stipulation Exhibit

Patent Owner's Mandatory Notices Under 37 C.F.R. 42.8(a)(2) NOTICE

Patent Owner's Power of Attorney NOTICE

Notice: NOTICE OF FILING DATE ACCORDED TO PETITION AND TIME FOR FILING PATENT OWNER PRELIMINARY RESPONSE NOTICE

60/708,473 Pabari-Provisional Exhibit

U.S. Pat. App. No. 2005/0044301 Vasilevsky Exhibit

Complaint_2-25-cv-00943 Exhibit

Docket Control Order Exhibit

Power of Attorney NOTICE

U.S. Patent No. 6,880,002 Hirschfeld Exhibit

Smith_Virtual Machines Exhibit

U.S. Patent No. 7,457,925 Fujino Exhibit

U.S. Patent No. 7,577,722 Khandaker Exhibit

U.S. Pat. App. No. 2002/0049803 Bandhole Exhibit