Microsoft Corporation vs. Qomplx LLC

Explore the PTAB proceeding IPR2026-00326 filed by Microsoft Corporation on 2026-04-03. This includes filing dates, application numbers, tech centers, patent numbers, and current case status.

Proceeding Overview

Proceeding Number

IPR2026-00326

Filing Date

2026-04-03

Accorded Filing Date

2026-04-03

Institution Decision Date

2026-09-02

Last Modified Date

2026-09-17

Proceeding Type

IPR

Termination Date

—

Trial Status

Trial Instituted

Parties & Counsel

Petitioner

Microsoft Corporation

Represented By

Mason, Andrewet al

Patent Owner / Respondent

Qomplx LLC

Represented By

WEATHERWAX, KENNETHet 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 18892295

Respondent Patent Number 12301628

External Links

Espacenet

Google Patents

Respondent Inventor Jason Crabtree et al

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

Address and Attorney/Agent Information

10 Registered Practitioners

Power of Attorney & Correspondence

Firm / Entity Name NK Patent Law

Customer Number 115007

Address 4101 Lake Boone Trail, Suite 218, Raleigh, NC, 27607, UNITED STATES

Attorney / Agent Information

Reg #	Name	Phone
39151	Christopher Cook	513-307-8268
44141	Andrew Hagerty	513-983-3762
56748	Wesley Sheffield	3217288444
59389	Justin Nifong	919-348-2194
65727	Douglas Meier	919-348-2194
68963	Aniruddha Agrawal	919-348-2194
69606	Cameron Applegate	919-348-2194
72169	Gregory Evans	919-348-2194
72576	Randolph Tucker	919-348-2194
78623	Taylor Langley	919-246-3955

Proceeding Documents

Petitioner's Objections to Patent Owner's Evidence OTHER

2026-09-17 FILING PARTY: PETITIONER

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Patent Owner's Objections To Petitioner's Evidence OTHER

2026-09-17 FILING PARTY: PATENT OWNER

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Order: SCHEDULING ORDER ORDER

2026-09-08 FILING PARTY: BOARD

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Institution Decision: Grant DECISION

2026-09-02 FILING PARTY: BOARD

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Order: Granting Patent Owners Unopposed Motion Requesting Acceptance of Submission 37 C.F.R. sec. 42.6b ORDER

2026-08-27 FILING PARTY: BOARD

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Microsoft Corporation vs. Qomplx LLC

Proceeding Overview

Parties & Counsel

Petitioner

Microsoft Corporation

Represented By

Patent Owner / Respondent

Qomplx LLC

Represented By

Tribunal & Venue

Patent Information

Address and Attorney/Agent Information

Power of Attorney & Correspondence

Attorney / Agent Information

Proceeding Documents

Petitioner's Objections to Patent Owner's Evidence OTHER

Patent Owner's Objections To Petitioner's Evidence OTHER

Order: SCHEDULING ORDER ORDER

Institution Decision: Grant DECISION

Order: Granting Patent Owners Unopposed Motion Requesting Acceptance of Submission 37 C.F.R. sec. 42.6b ORDER

Patent Owner's Preliminary Sur-Reply OTHER

Petitioner's Preliminary Reply To Patent Owner's Preliminary Response ("POPR") OTHER

Patent Owner's Motion to Amend Filing Date MOTION

Ex. 2007 - 7-8-26 Board Notice Email Exhibit

Ex. 2009 - 7-9-26 Meet-and-Confer Email Exhibit

Ex. 2010 - Authorization Correspondence Exhibit

Ex. 2008 - 7-8-26 Transmittal Email Exhibit

Ex. 2006 - 7-8-26 Service Email Exhibit

Ex. 2005 Exhibit

Ex. 2003 - Malek Declaration Exhibit

Patent Owner's Preliminary Response POPR

Ex. 2004 Exhibit

Patent Owner's Updated Mandatory Notices NOTICE

Ex. 2001 Lowenstein Declaration In Support of Notice of Intent Exhibit

Ex. 2002 Woo Declaration In Support of Notice of Intent Exhibit

Notice of Intent to Designate Colette Woo as Back-Up Counsel NOTICE

Notice of Intent to Designate Nathan Lowenstein as Back-Up Counsel NOTICE

Soterra Plus Stipulation Exhibit

Petitioner's Updated Exhibit List NOTICE

Notice filing date accorded NOTICE

Patent Owner's Power of Attorney NOTICE

Patent Owner's Mandatory Notice NOTICE

Petition for Inter Partes Review of U.S. Patent No. 12,301,628 PETITION

Plaintiff Qomplx LLC’s Preliminary Disclosure of Proposed Claim Constructio Exhibit

U.S. Patent No. 10,909,241 Exhibit

Complaint For Patent Infringement, Qomplx LLC v. Microsoft Corp. Exhibit

Microsoft Computer Dictionary Exhibit

U.S. Patent No. 9,225,730 Exhibit

File History of U.S. Patent No. 12,301,628 Exhibit

Redline Comparison of Crabtree to ’628 Patent Specification Exhibit

U.S. Patent App. Pub. No. 2020/0177617A1 Exhibit

Power of Attorney of Petitioner Microsoft Corporation NOTICE

U.S. Patent App. Pub. No. 2019/0081876A1 Exhibit

Plaintiff Qomplx’s Preliminary Infringement Contentions Exhibit

U.S. Patent App. Pub. No. 2020/0296137A1 Exhibit

Thomas H. Cormen, et al., Introduction to Algorithms Exhibit

U.S. Patent App. Pub. No. 2018/0069885A1 Exhibit

Declaration of John R. Black, Jr. Exhibit

U.S. Patent App. Pub. No. 2018/0367548A1 Exhibit

U.S. Patent App. Pub. No. 2022/0014560A1 Exhibit

U.S. Patent No. 12,301,628 Exhibit

Listing and Comparison of ’628 Patent Challenged Claims Exhibit

William Eberle & Lawrence Holder, Incremental Anomaly Detection in Graphs Exhibit

Leman Akoglu et al., Graph Based Anomaly Detection Description: A Survey Exhibit

Breadth-First Search, Carnegie Mellon Univ. School of Computer Science Exhibit

U.S. Patent App. Pub. No. 2018/0219919A1 Exhibit

Defendant’s Preliminary Claim Constructions Exhibit