Microsoft Corporation vs. Sterling Computers Corporation

Explore the PTAB proceeding IPR2025-00270 filed by Microsoft Corporation on 2025-01-17. This includes filing dates, application numbers, tech centers, patent numbers, and current case status.

Proceeding Overview

Proceeding Number

IPR2025-00270

Filing Date

2025-01-17

Accorded Filing Date

2025-01-17

Institution Decision Date

2025-09-23

Last Modified Date

2026-10-14

Proceeding Type

IPR

Termination Date

2026-09-14

Trial Status

Pending Director Review

Parties & Counsel

Petitioner

Microsoft Corporation

Represented By

Edwards, Dustinet al

Patent Owner / Respondent

Sterling Computers Corporation

Represented By

Padmanabhan, Devanet 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 11129212

Respondent Patent Number 8073911

External Links

Espacenet

Google Patents

Respondent Inventor Justin Marston et al

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

Address and Attorney/Agent Information

4 Registered Practitioners

Power of Attorney & Correspondence

Firm / Entity Name Padda Law Group

Customer Number 157954

Address 9800 Shelard Parkway, Suite 120, Minneapolis, MN, 55441, UNITED STATES

Attorney / Agent Information

Reg #	Name	Phone
38262	Devan Padmanabhan	612-444-3377
52169	Paul Robbennolt	612-444-3601
55135	Erin Dungan	612-444-3634
62319	Michelle Dawson	612-444-3577

Proceeding Documents

Patent Owner's Request for Director Review REQUEST

2026-10-14 FILING PARTY: PATENT OWNER

Download

3100

Email, Subject_IPR2025-00270 Director Review Request Exhibit

2026-10-14 FILING PARTY: BOARD

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JUDGMENT Final Written Decision Determining All Challenged Claims Unpatentable Dismissing Patent Owner’s Motion to Exclude 35 U.S.C. § 318(a) FINAL

2026-09-14 FILING PARTY: BOARD

Download

Other: Hearing transcript OTHER

2026-08-18 FILING PARTY: BOARD

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Patent Owner's Objections to Petitioner's Demonstratives OTHER

2026-07-15 FILING PARTY: PATENT OWNER

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Microsoft Corporation vs. Sterling Computers Corporation

Proceeding Overview

Parties & Counsel

Petitioner

Microsoft Corporation

Represented By

Patent Owner / Respondent

Sterling Computers Corporation

Represented By

Tribunal & Venue

Patent Information

Address and Attorney/Agent Information

Power of Attorney & Correspondence

Attorney / Agent Information

Proceeding Documents

Patent Owner's Request for Director Review REQUEST

Email, Subject_IPR2025-00270 Director Review Request Exhibit

JUDGMENT Final Written Decision Determining All Challenged Claims Unpatentable Dismissing Patent Owner’s Motion to Exclude 35 U.S.C. § 318(a) FINAL

Other: Hearing transcript OTHER

Patent Owner's Objections to Petitioner's Demonstratives OTHER

Patent Owner's Demonstratives OTHER

Petitioner’s Objections To Patent Owner’s Demonstratives OTHER

Petitioner's Demonstratives OTHER

Patent Owner's Reply in Support of Its Motion to Exclude Evidence REPLY

Petitioner's Updated Mandatory Notices NOTICE

Petitioner’s Opposition To Patent Owner’s Motion To Exclude Evidence OPPOSITION

ORDER Setting Oral Argument 37 C.F.R. § 42.70 ORDER

ORDER Granting Petitioner’s Motion to Withdraw and Substitute Counsel 37 C.F.R. § 42.10 ORDER

Patent Owner's Motion to Exclude Evidence MOTION

Petitioner's Unopposed Motion To Withdraw and Substitute Counsel MOTION

Patent Owner's Request for Oral Argument OTHER

Petitioner's Request for Oral Hearing NOTICE

Petitioner Updated Power of Attorney NOTICE

Petitioner Updated Mandatory Notices NOTICE

Patent Owner's Sur-Reply OTHER

EX. 1023 - 461 Prosecution History Exhibit

EX. 1022 - Latifur Khan Deposition Transcript Exhibit

Petitioner's Reply to Patent Owner's Response REPLYTOOPP

Email Exhibit

AMENDED SCHEDULING ORDER ORDER

Stipulation Regarding Due Dates 2 & 3 NOTICE

Petitioner's Notice of Deposition for Latifur Khan NOTICE

Updated Mandatory Notice NOTICE

Exhibit 2012-Certification Exhibit

Notice of Intent to Designate a Provisionally Recognized PTAB Attorney as Backup Counsel NOTICE

Exhibit 2009 Exhibit

Exhibit 2010 Exhibit

Exhibit 2006 Exhibit

Exhibit 2011 Exhibit

Exhibit 2005 Exhibit

Exhibit 2007 Exhibit

Exhibit 2008 Exhibit

Patent Owner's Response RESPONSE

Decision Granting Institution of Inter Partes Review DECISION

Scheduling Order ORDER

Patent Owner's Sur-Reply OTHER

Petitioner’s Preliminary Reply for Inter Partes Review of U.S. Patent No. 8,073,911 OTHER

Patent Owner's Preliminary Response POPR

Exhibit 2002 Exhibit

Exhibit 2003 Exhibit

Exhibit 2004 Exhibit

Notice: Referral to Board Panel NOTICE

Notice: Notice filing date accorded NOTICE

E-mail re provisionally recognized attorney Exhibit

Power of Attorney NOTICE

Updated Mandatory Notice NOTICE

Notice: Mandatory Notice NOTICE

Ex 1021 -- Main Memory Caching of Web Documents (Markatos) Exhibit

Ex 1013 -- Collaboration Support in Networked Distance Learning Exhibit

Ex 1017 -- U.S. Patent Pub. No. 2004-0260698 (MacMillan) Exhibit

Petitioner's Power of Attorney NOTICE

Ex 1010 -- Sterling's Preliminary Infringement Contentions and Disclosures Exhibit

Ex 1007 -- Schiavone File History Exhibit

Ex 1008 -- Schiavone Doc History Exhibit

Ex 1018 -- U.S. Patent No. 6978274 (Gallivan) Exhibit

Ex 1004 -- John Black CV Exhibit

Ex 1003 -- Dr. John Black Declaration Exhibit

Ex 1002 -- 911 Patent FH Exhibit

Ex 1001 -- U.S. Patent No. 8,073,911 (the '911 Patent) Exhibit

Ex 1005 -- U.S. Patent Pub. No. 2003-0163537 (Rohall) Exhibit