Defendant
4 cases as defendant.
Company overview. Sirius XM Radio Inc. (commonly "SiriusXM") is the U.S. satellite-radio operating company and wholly owned subsidiary of Sirius XM Holdings Inc., a public company listed on Nasdaq under "SIRI." It is headquartered at 1221 Avenue of the Americas in New York City. The business traces to Sirius Satellite Radio and XM Satellite Radio, which merged in 2008. In September 2024 Sirius XM Holdings was split off from Liberty Media, which nonetheless remained the controlling shareholder (~81% at closing). The company employs roughly 5,100–5,500 people and reported annual revenue of about $8.7 billion (FY2024–2025 per MarketWatch), with approximately 33 million SiriusXM subscribers and roughly 43 million Pandora monthly active users at year-end 2024 (10-K).
Products / services / operations. SiriusXM operates a subscription audio-entertainment business delivered through two proprietary satellite-radio systems, streamed via mobile, home, and in-car apps (including its "360L" integrated satellite/streaming interface). Major offerings include the SiriusXM satellite/streaming radio service (live, curated, and on-demand programming, with revenue from subscriptions plus advertising on select channels), the Pandora ad-supported and subscription streaming platform (acquired in 2019), podcast networks, connected-vehicle and data services (traffic, weather, fuel prices for cars, boats, and aircraft), and digital audio ad technology through AdsWizz. Satellite radios are distributed mainly through automakers, retailers, and the company's website.
Patent-litigation posture. SiriusXM is an operating company and a pure defendant in the tracked data: 0 cases as plaintiff, 1 as defendant. The suit is a patent-infringement action brought by DynaMuse LLC, a non-practicing entity (characterized as such in the Stanford NPE Litigation Database, which lists it as asserting acquired patents in multiple suits), rather than a dispute between competitors. The case sits in the U.S. District Court for the Northern District of Texas — a venue DynaMuse has used alongside its other filings in the Eastern District of Texas against streaming/audio defendants such as Mixcloud and Xandrie.
Notable case. The single tracked matter is DynaMuse LLC v. Sirius XM Radio Inc. (No. 3:2026-cv-00803, N.D. Tex., filed March 12, 2026, before Judge Ada Brown), alleging patent infringement under 35 U.S.C. § 271 with a jury demand. It appears to target SiriusXM's streaming/audio-service technology, consistent with the plaintiff's broader campaign against digital audio platforms. No merits assessment is offered here.
Cedar Lane asserted US 8,165,867 against Sirius XM Radio in the S.D.N.Y.; the complaint expressly pleaded the '867 patent as Exhibit 8. The action was terminated.
Cedar Lane Technologies Inc. sued Sirius XM Radio Inc. in N.D. Tex. asserting the '194 patent family; the case was terminated.
Newly filed patent infringement suit in the Northern District of Texas; Justia lists it under 35 U.S.C. § 271 patent infringement. The exact filing date was not confirmed in the retrieved records.
Cedar Lane Technologies Inc. asserted the '489 patent against Sirius XM Radio Inc. in N.D. Tex.; the narrative cites a Cadwalader docket excerpt and a Judge Ed Kinkeade order dated 5/6/2020.