BoomCloud 360, Apple, and a Three-Forum Audio Fight. Midland Asserts One Trio, the DJ Another.

BoomCloud 360's audio campaign spans several courts and the ITC. Apple's first-filed Southern District of California declaratory-judgment complaint (August 5) seeks a DJ of noninfringement of U.S. Patent Nos. 10,313,820, 10,721,564, and 10,757,527. BoomCloud's Western District of Texas Midland complaints (August 13) against Apple (7:26-cv-00312) and Google (7:26-cv-00313) assert a different trio: 10,524,078, 11,051,121, and 11,533,560. On September 15, 2026, the Commission ordered institution of Inv. No. 337-TA-1521 on that Midland set against Apple, Samsung, and Google. Separately, Google (N.D. Cal.), Samsung (S.D. Cal.), and Motorola Mobility (N.D. Cal.) have filed DJ actions on the Apple DJ trio. Do not collapse the two patent sets.

Filings and institution reviewed

Forum one: Apple's first-filed DJ in San Diego

On August 5, 2026, Apple Inc. sued Boomcloud 360, Inc. in the Southern District of California, No. 3:26-cv-04492-RSH-DEB, assigned to Judge Robert S. Huie. The complaint seeks a declaratory judgment of noninfringement of U.S. Patent Nos. 10,313,820, 10,721,564, and 10,757,527. BoomCloud is an Encinitas, California company. Venue in the Southern District is therefore not a stretch. Apple's theory of an actual controversy is that BoomCloud accused Apple products in other cases, including infringement contentions served March 19, 2026 in Eastern District of Texas suits against AT&T and T-Mobile.

The DJ is also the source for how BoomCloud describes itself. Apple quotes BoomCloud's AT&T complaint as alleging that BoomCloud's audio rendering solutions have been licensed and implemented by several large companies, including Qualcomm, which is headquartered in San Diego. That is an operating-licensor allegation recited in a public pleading, not a finding that Qualcomm practices the patents or that Apple does. Apple denies infringement of all three patents.

What the three DJ patents cover (as Apple and the later DJs recite them)

U.S. Patent 10,313,820 covers sub-band spatial audio enhancement (issued June 4, 2019). Claim 1, as quoted in the Apple DJ, covers a method that splits left and right input channels into a spatial (difference) component and a nonspatial (sum) component, applies first and second subband gains, and recombines them into left and right output channels. Apple says the accused devices do not process left and right inputs into spatial and nonspatial components or apply subband gains to generate an enhanced nonspatial component.

U.S. Patent 10,721,564 covers subband spatial and crosstalk cancellation for audio reproduction (issued July 21, 2020). Claim 1, as quoted, covers a crosstalk-cancellation method that determines a speaker parameter comprising a listening angle between first and second speakers, generates a compensation signal for spectral defects, precompensates the audio, and then performs crosstalk cancellation based on that speaker parameter. Apple says the accused devices do not determine a listening angle or generate compensation based on it.

U.S. Patent 10,757,527 covers a crosstalk cancellation b-chain (issued August 25, 2020). Claim 1, as quoted, covers a system that determines asymmetries between left and right speakers in frequency response, time alignment, and signal level for a listening position, and then generates output channels by applying N-band equalization, delay, or gain to adjust for those asymmetries. Apple says the accused devices do not determine those asymmetries or apply corrections based on them. Mid-side subband processing, crosstalk cancellation tied to listening angle, and b-chain speaker matching are a fair high-level map of the three DJ families. They are the DJ plaintiffs' recitations of BoomCloud's claims, not a construction.

Forum two: BoomCloud sues Apple (and Google) in Midland, not Waco

On August 13, 2026, BoomCloud 360, Inc. sued Apple Inc. in the Western District of Texas, No. 7:26-cv-00312, assigned to Judge David Counts. The 7: prefix is the Midland/Odessa division. It is not the Waco 6: docket. Counsel is Russ August & Kabat. The complaint asserts a different trio: U.S. Patent 10,524,078, Crosstalk Cancellation B-Chain (issued December 31, 2019); U.S. Patent 11,051,121, Spectral Defect Compensation for Crosstalk Processing of Spatial Audio Signals (June 29, 2021); and U.S. Patent 11,533,560, Dynamic Rendering Device Metadata-Informed Audio Enhancement System (December 20, 2022). Claims are not quoted in the complaint body; the charts are exhibits not in the main PDF. Accused products include iPhone 17; iPad Pro 11-inch M5; Spatialize Stereo and built-in stereo-speaker spatial audio; and combinations with AirPods 4, AirPods 4 ANC, AirPods Pro 2, AirPods Pro 3, and AirPods Max. Direct, induced, and contributory infringement are pleaded, all willful. Notice is alleged through licensing talks from summer 2017 through fall 2021 under NDA.

The same day, BoomCloud sued Google LLC in Midland, No. 7:26-cv-00313, on the same three patents. Accused products include Pixel 10 Pro; Spatial Audio and built-in stereo; and Pixel Buds Pro 2, Pixel Buds Pro, and Pixel Buds 2a. Notice is alleged through a June 2016 NDA with Google. The '527 patent in the San Diego DJ and the '078 patent in the Midland complaints share the title Crosstalk Cancellation B-Chain. They are different patent numbers. Do not treat the DJ trio as the Midland counts, or the Midland trio as the DJ counts.

Forum three: ITC institution, Inv. No. 337-TA-1521

On August 14, 2026, BoomCloud 360 Inc. filed a section 337 complaint, originally docketed as DN 3931 and captioned Certain Electronic Devices with Certain Audio Technologies. The Commission ordered institution on September 15, 2026; the notice of investigation issued September 16 as Inv. No. 337-TA-1521. Respondents named for service are Apple, Inc.; Samsung Electronics Co., Ltd.; Samsung Electronics America, Inc.; and Google LLC. The instituted patents are U.S. Patent 10,524,078 (claims 1-23), U.S. Patent 11,533,560 (claims 1-43), and U.S. Patent 11,051,121 (claims 1-30), the same Midland set. BoomCloud seeks a limited exclusion order and cease and desist orders. Institution is not a merits finding. Claim-level coverage and the notice details are on the dedicated analysis of Investigation No. 337-TA-1521.

More DJs on the Apple trio: Google, Samsung, Motorola

On August 18, 2026, Google LLC sued Boomcloud 360, Inc. in the Northern District of California, No. 3:26-cv-08573, seeking a declaratory judgment of noninfringement of the same three patents as Apple's San Diego DJ: 10,313,820, 10,721,564, and 10,757,527. Google's complaint says carrier-case contentions accused Pixel and Pixel Buds products and anticipates similar accusations in the retailer cases.

On September 3, 2026, Samsung Electronics Co., Ltd. and Samsung Electronics America, Inc. sued Boomcloud 360, Inc. in the Southern District of California, No. 3:26-cv-05019-AGS-GC, assigned to Judge Andrew G. Schopler. The AO 120 patent report lists the same DJ trio: 10,313,820, 10,721,564, and 10,757,527. That filing sits alongside BoomCloud's separate Eastern District of Texas infringement actions against Samsung (including 2:26-cv-00104 and 2:26-cv-00693) and Samsung's role as an ITC respondent in 337-TA-1521.

On September 15, 2026, the same day the Commission ordered ITC institution, Motorola Mobility LLC sued Boomcloud 360, Inc. in the Northern District of California, No. 3:26-cv-10497. Counsel is Vinson & Elkins. The complaint seeks a declaratory judgment of noninfringement of U.S. Patent Nos. 10,313,820, 10,721,564, and 10,757,527. Motorola's complaint says it is not a named defendant in the Eastern District of Texas carrier suits, but carrier-case contentions accused its products. It anticipates similar accusations in the retailer cases against Best Buy, Target, and Walmart. U.S. Patent 10,313,820 covers the mid-side subband enhancement method recited as Claim 1 in Motorola's DJ; U.S. Patent 10,721,564 covers the listening-angle crosstalk method; U.S. Patent 10,757,527 covers the b-chain asymmetry system. Those are the same claim families Apple, Google, and Samsung put at issue in their DJ complaints. They are still not the Midland/ITC trio.

The different patent sets

The district filings use two different patent sets. Apple's August 5 complaint and the later Google, Samsung, and Motorola filings concern the '820, '564, and '527 patents. BoomCloud's August 13 Midland complaints and the September 16 ITC institution notice concern the '078, '121, and '560 patents. The earlier filing date alone does not resolve how any later coordination or stay motion should be decided.

Scope of this update

This article describes the identified complaints, the Samsung patent-report docket entry, and the September 16 ITC institution notice. It does not establish the current district response deadlines or whether a later answer, motion, or order has been filed. Read later docket entries before relying on a case deadline or procedural status.

What to watch next

Follow later responses and orders in Apple No. 3:26-cv-04492; the Midland cases, Nos. 7:26-cv-00312 and 7:26-cv-00313; Google No. 3:26-cv-08573; Samsung No. 3:26-cv-05019; and Motorola No. 3:26-cv-10497. At the Commission, follow respondent answers and the ALJ schedule in Investigation No. 337-TA-1521. Any coordination or stay request should be read with the patent sets and parties in each proceeding in view.