Defendant

Microsoft Corp.

17 cases as defendant.

Cases
17
Active
2
15 closed
Filed
2008–2022
Top venue
W.D. Texas
2 cases
Also appears as a plaintiff in 5 cases → View as plaintiff

Company profile

Microsoft Corporation is a publicly traded multinational technology company founded in 1975 by Bill Gates and Paul Allen. Headquartered in Redmond, Washington, the company is a major force in the software industry and is listed on the Nasdaq stock exchange under the ticker symbol MSFT. As of early 2026, Microsoft reported having 228,000 employees. For its 2025 fiscal year, the company posted revenues of $281.7 billion. Its market capitalization was approximately $3.08 trillion in May 2026.

Microsoft develops, manufactures, licenses, and supports a wide range of software products, services, and hardware devices. The company's core product lines include the Windows operating system, the Microsoft 365 and Office productivity suites (including Word, Excel, PowerPoint, and Outlook), and the Azure cloud computing platform. In hardware, Microsoft is known for its Xbox video game consoles and the Surface line of personal computers. The company also operates in web services with its Bing search engine and the professional networking site LinkedIn.

As a major technology provider, Microsoft is frequently a defendant in patent litigation. The provided data shows Microsoft as a defendant in a case brought by Semantic Engines LLC. This posture as a target for litigation is typical for a large operating company. The single tracked case, Semantic Engines LLC v. Microsoft Corp, was filed in the U.S. District Court for the Eastern District of Texas, a venue known for patent litigation.

The case against Microsoft was filed on April 23, 2026, by Semantic Engines LLC. This lawsuit is representative of the challenges large technology firms face from entities that hold and assert patent rights. Microsoft is also involved in other high-profile intellectual property disputes, notably litigation concerning the training of artificial intelligence models, including a prominent copyright infringement lawsuit filed by The New York Times against Microsoft and its partner OpenAI.

Filing activity

2008: 1 case'082010: 1 case'10'122013: 2 cases2'14'162018: 2 cases'182020: 1 case'202021: 2 cases2022: 1 case'22
Cases filed per year naming Microsoft Corp. as defendant.

AlmondNet, Inc. et al. v. Microsoft Corp. et al.

dismissed with prejudice
Docket:
6:21-cv-00897
Filed:
2021-08-27
Terminated:
2024-06-05
Patents:9830615

AlmondNet and Intent IQ sued Microsoft and Xandr in W.D. Tex., asserting ten patents including U.S. 9,830,615, with claims 9-12 asserted against Microsoft. The case was dismissed with prejudice by joint stipulation in June 2024, each side bearing its own fees and costs, and was consolidated with the later 6:22-cv-01206 Microsoft case.

MemoryWeb LLC v. Microsoft Corp.

dismissed
Docket:
6:21-cv-00411
Filed:
2021-05-03
Terminated:
2023-08-28
Patents:11163823

MemoryWeb LLC filed a lawsuit against Microsoft Corp., which was voluntarily dismissed by the plaintiff with prejudice. Although the patent was granted after the filing date, it is listed as asserted in this case.

IPA Technologies Inc. v. Microsoft Corp.

stayed/resolved
Docket:
1:18-cv-00001
Filed:
2018-01-01
Patents:6742021

IPA Technologies Inc. sued Microsoft Corp. in the District of Delaware. The complaint was submitted as Exhibit 1006 in the '021 IPR, indicating '021 was among the asserted patents. The case was stayed 2020-01-10 pending IPRs and later resolved in Microsoft's favor at the PTAB and on appeal.

IPA Technologies v. Microsoft Corp.

settled
Filed:
2018
Terminated:
2024-06-18
Patents:7069560

A jury awarded IPA Technologies $242 million in damages on May 10, 2024, finding that Microsoft's Cortana infringed three claims of US Patent 7069560. The parties reached a confidential settlement on June 18, 2024.

VirnetX Inc. et al. v. Microsoft Corp.

settled
Docket:
6:13-cv-00351-LED
Filed:
2013-04-22

VirnetX and SAIC asserted four patents against Microsoft, including the '211 patent. The court's claim-construction order construed '211 claim terms. The case was resolved by settlement/license; settlement date and amount are not confirmed in the narrative.

Walker Digital, LLC v. Microsoft Corp. et al.

Terminated
Docket:
2:10-cv-00825
Filed:
2010-05-20
Patents:5742768

Litigation initiated by Walker Digital, LLC, a patent assertion entity, against numerous major software companies. The case was resolved via dismissals with prejudice for various defendants throughout 2011 and 2012, suggesting settlements were reached.

Innovative Display Technologies LLC v. Acer Inc. et al.

claim construction; one claim invalidated as indefinite

IDT infringement action against Acer, Microsoft, and others in the Eastern District of Texas. In 2014, the court issued a claim construction order and invalidated one claim as indefinite under 35 U.S.C. 112(2); the '816 patent was among the patents-in-suit.

IPA Technologies Inc. v. Microsoft Corp.

stayed
Docket:
1:18-cv-00001
Court:
D. Del.
Patents:6523061

IPA Technologies Inc. sued Microsoft Corp. in D. Del. listing US 6,523,061 among asserted patents. The case was stayed with the Google case pending IPR in January 2020.

Robocast, Inc. v. Microsoft Corp.

concluded
Docket:
1:10-cv-01055-RGA
Patents:7155451

Robocast sued Microsoft in D. Del. for infringement of the '451 patent, accusing Bing, MSN, MSNBC, and Xbox features. The court issued claim construction and 2014 summary-judgment rulings, including partial non-infringement and issues left for trial; the case concluded, but the precise final disposition is not stated.