Boomcloud 360 Inc v. Samsung Electronics Co Ltd

I. Executive Summary and Procedural Information

• Parties & Counsel:
  • Plaintiff: Boomcloud 360, Inc. (Delaware)
  • Defendant: Samsung Electronics Co., Ltd. (South Korea); SAMSUNG RESEARCH AMERICA, INC. (California); and Samsung Electronics America, Inc. (New York)
  • Plaintiff's Counsel: Russ August & Kabat
• Case Identification: 2:26-cv-00693, E.D. Tex., 08/13/2026
• Venue Allegations: Plaintiff alleges venue is proper because Defendants have transacted business, committed acts of infringement, and maintain established places of business in the district. For the foreign defendant, venue is alleged to be proper in any district. The complaint also notes that Samsung has previously admitted to or not contested venue in the E.D. Tex. and has asserted its own patents in the district.
• Core Dispute: Plaintiff alleges that Defendant's smartphones, tablets, and audio accessories featuring spatial audio functionality infringe three U.S. patents related to advanced audio signal processing, spatial enhancement, and device-aware audio correction.
• Technical Context: The technology at issue involves digital signal processing techniques designed to improve the immersive quality of stereo audio, particularly by correcting for physical and environmental asymmetries in speaker setups and compensating for artifacts introduced by spatial audio algorithms.
• Key Procedural History: The complaint alleges that the parties engaged in licensing discussions and technical demonstrations under a non-disclosure agreement (NDA) beginning in April 2017. It further alleges that despite these extensive communications, no licensing agreement was reached. This history is presented as establishing Defendant's pre-suit knowledge of the patented technology.

Case Timeline

Date	Event
2017-04-XX	Boomcloud and Samsung enter into a Non-Disclosure Agreement (NDA).
2017-11-29	U.S. Patent No. 10,524,078 Priority Date.
2018-06-20	U.S. Patent No. 11,051,121 Priority Date.
2019-11-15	U.S. Patent No. 11,533,560 Priority Date.
2019-12-31	U.S. Patent No. 10,524,078 Issue Date.
2021-06-29	U.S. Patent No. 11,051,121 Issue Date.
2022-12-20	U.S. Patent No. 11,533,560 Issue Date.
2026-08-13	Complaint Filing Date.

II. Technology and Patent(s)-in-Suit Analysis

U.S. Patent No. 10,524,078 - "Crosstalk Cancellation B-Chain"

• Patent Identification: U.S. Patent No. 10,524,078, issued on December 31, 2019 (the "'078 Patent") Compl. ¶21 '078 Patent, p. 1

The Invention Explained

• Problem Addressed: The patent's background section describes how the ideal audio experience (the "sweet spot") is often compromised in real-world listening environments due to geometric and physical "asymmetries" Compl. ¶22 '078 Patent, col. 1:11-41 These include a listener being off-center or the left and right speakers having mismatched frequency or amplitude characteristics '078 Patent, col. 1:26-37
• The Patented Solution: The invention proposes a "b-chain processor" that actively compensates for these asymmetries. The processor first determines the differences between the left and right speakers in frequency response, time alignment, and signal level for a given listening position. It then generates corrected output channels by applying N-band equalization, a delay, and a gain to a spatially enhanced signal to adjust for the determined asymmetries in frequency, time, and level, respectively '078 Patent, abstract '078 Patent, col. 2:56-65
• Technical Importance: This technology aims to restore a perceived ideal spatial sound stage for audio rendered on non-ideally configured systems, which is common for consumer electronics like mobile devices with built-in speakers '078 Patent, col. 3:31-40

Key Claims at a Glance

• The complaint alleges infringement of one or more claims of the '078 Patent, referencing an un-provided claim chart exhibit Compl. ¶23 Independent claim 1 is representative of the patent's core system.
• Independent Claim 1 requires, among other things:
  • A spatial enhancement processor configured to generate a spatially enhanced signal;
  • A b-chain processor configured to:
  • determine asymmetries between the left speaker and the right speaker in frequency response, time alignment, and signal level for a listening position; and
  • generate left and right output channels by applying an N-band equalization, a delay, and a gain to the spatially enhanced signal to adjust for the determined asymmetries in frequency response, time alignment, and signal level, respectively '078 Patent, col. 20:1-24

U.S. Patent No. 11,051,121 - "Spectral Defect Compensation for Crosstalk Processing of Spatial Audio Signals"

• Patent Identification: U.S. Patent No. 11,051,121, issued on June 29, 2021 (the "'121 Patent") Compl. ¶32 '121 Patent, p. 1

The Invention Explained

• Problem Addressed: The patent describes how crosstalk processing-a technique used to enhance spatial audio-can introduce "perceptually unpleasant comb-filtering artifacts" into the signal '121 Patent, col. 1:29-33 These artifacts manifest as unwanted attenuation or amplification of certain sonic elements.
• The Patented Solution: The invention compensates for these spectral defects by generating a "mid compensation channel." This is achieved by generating a "mid component" (the sum of left and right channels) and applying specific filters to it to counteract the artifacts caused by crosstalk processing. This compensation channel is then used in generating the final left and right output signals '121 Patent, abstract '121 Patent, col. 2:10-22
• Technical Importance: This approach allows for the implementation of spatial audio techniques like crosstalk cancellation while actively mitigating their undesirable side effects, thereby preserving the spectral integrity of the original audio mix '121 Patent, col. 1:29-37

Key Claims at a Glance

• The complaint alleges infringement of one or more claims of the '121 Patent, referencing an un-provided claim chart exhibit Compl. ¶34 Independent claim 1 is a representative method claim.
• Independent Claim 1 requires, among other things, the steps of:
  • Applying a crosstalk processing to the audio signal;
  • Generating a mid component using a sum of the left and right channels;
  • Generating a mid compensation channel by applying filters to the mid component that compensate for spectral defects in the crosstalk processed audio signal; and
  • Generating a left output channel and a right output channel using the mid compensation channel '121 Patent, col. 26:1-16

U.S. Patent No. 11,533,560 - "Dynamic Rendering Device Metadata-Informed Audio Enhancement System"

• Patent Identification: U.S. Patent No. 11,533,560, issued on December 20, 2022 (the "'560 Patent") Compl. ¶43

Technology Synopsis

The patent addresses the challenge of delivering consistent audio quality across a wide variety of devices with different audio rendering capabilities '560 Patent, col. 1:20-34 The invention describes a system that queries a device's operating system to obtain "rendering system information" (metadata about the audio hardware) and then uses this information to select and apply an audio enhancement profile specifically optimized for that hardware '560 Patent, abstract

Asserted Claims

The complaint asserts one or more claims of the '560 Patent, referencing an un-provided claim chart Compl. ¶45

Accused Features

The complaint alleges that Samsung's products which "enhance a stereo input audio signal" infringe this patent, tying the selection of audio enhancements to the specific device and its features, such as the "360 Audio" capability used with Galaxy Buds Compl. ¶44

III. The Accused Instrumentality

Product Identification

The Accused Products are identified as Samsung devices and accessories that perform spatial audio processing, including but not limited to the "Galaxy S25 Ultra," "Galaxy Tab S10 FE," "Galaxy Buds3 Pro," "Galaxy Buds3," "Galaxy Buds2 Pro," and "Galaxy Buds Pro" Compl. ¶22 Compl. ¶33

Functionality and Market Context

The accused functionality is the devices' ability to provide an enhanced spatial audio experience, either through "built-in stereo-speaker spatial audio processing" or via the "360 Audio" feature when used with connected headphones like Galaxy Buds Compl. ¶22 Compl. ¶44 The complaint alleges these features are intended to provide customers with an "improved user experience" Compl. ¶8

No probative visual evidence provided in complaint.

IV. Analysis of Infringement Allegations

'078 Patent Infringement Allegations

Claim Element (from Independent Claim 1)	Alleged Infringing Functionality	Complaint Citation	Patent Citation
a spatial enhancement processor configured to generate a spatially enhanced signal by gain adjusting spatial components and nonspatial components of the input audio signal	Samsung's products generate a "spatially enhanced signal" as part of their spatial audio processing.	¶22	col. 4:1-9
a b-chain processor, configured to: determine asymmetries between the left speaker and the right speaker in frequency response, time alignment, and signal level for a listening position	Samsung's products are alleged to operate by "determining and correcting asymmetries between the left and right speakers in frequency response, time alignment, and signal level for a listening position."	¶22	col. 14:8-14
applying an N-band equalization to the spatially enhanced signal to adjust for the asymmetry in the frequency response	The complaint alleges the products correct for asymmetries in "frequency response."	¶22	col. 17:5-13
applying a delay to the spatially enhanced signal to adjust for the asymmetry in the time alignment	The complaint alleges the products correct for asymmetries in "time alignment."	¶22	col. 17:36-54
applying a gain to the spatially enhanced signal to adjust for the asymmetry in the signal level	The complaint alleges the products correct for asymmetries in "signal level."	¶22	col. 17:23-34

• Identified Points of Contention:
  • Scope Question: A primary issue for the court may be the scope of the term "determine asymmetries". The infringement analysis will likely focus on whether the accused Samsung products perform an active, dynamic measurement or calculation to identify asymmetries, as the patent specification suggests '078 Patent, col. 14:8-14, or if they apply pre-configured profiles, which may not satisfy the "determine" limitation.
  • Technical Question: The complaint makes a direct, conclusory allegation that Samsung's products correct for asymmetries in frequency, time, and gain Compl. ¶22 A key technical question for discovery will be whether the underlying architecture of Samsung's "360 Audio" feature actually applies three separate types of corrections (equalization, delay, and gain) as required by the claim structure, or if it uses a more integrated, monolithic algorithm to achieve a similar perceptual effect.

'121 Patent Infringement Allegations

Claim Element (from Independent Claim 1)	Alleged Infringing Functionality	Complaint Citation	Patent Citation
applying a crosstalk processing to the audio signal	The accused products are alleged to "perform spatial audio processing on a stereo audio signal, including crosstalk processing."	¶33	col. 2:1-3
generating a mid component using a sum of the left channel and the right channel...	This is an inherent step in the alleged generation of a "mid compensation channel" from a stereo signal.	¶33	col. 1:40-44
generating a mid compensation channel by applying filters to the mid component that compensate for spectral defects in the crosstalk processed audio signal caused by the crosstalk processing	The complaint explicitly alleges "the generation of a mid compensation channel that compensates for spectral defects caused by the crosstalk processing."	¶33	col. 2:10-15
generating a left output channel and a right output channel using the mid compensation channel	This is alleged as part of the overall infringing process that produces the final audio output.	¶33	col. 2:18-22

• Identified Points of Contention:
  • Technical Question: The central dispute is likely to be factual and technical: does the software architecture in the Accused Products contain a function or module that is equivalent to the claimed "mid compensation channel"? The complaint alleges this directly Compl. ¶33, but the court will require technical evidence demonstrating that Samsung's system generates a compensation signal by filtering the "mid component" specifically to correct for "spectral defects", as opposed to using an alternative method for managing audio artifacts.

V. Key Claim Terms for Construction

• Term: "determine asymmetries" ('078 Patent, Claim 1)

• Context and Importance: This term is the active, diagnostic step of the invention claimed in the '078 Patent. The infringement question may turn on whether Samsung's system performs a measurement or calculation that meets the definition of "determine," versus simply selecting a static, pre-set audio profile. Practitioners may focus on this term to distinguish between a dynamic, responsive system and a static, pre-configured one.

• Intrinsic Evidence for Interpretation:

  • Evidence for a Broader Interpretation: The patent claims require the processor to "determine asymmetries" in frequency, time, and signal level for a "listening position" '078 Patent, col. 20:8-11 A party could argue this language is broad enough to cover any process that arrives at these values, including the selection of a profile based on metadata about the listening position.
  • Evidence for a Narrower Interpretation: The specification describes correcting for specific non-ideal conditions like an "off-center head position" or "un-matched" speakers '078 Patent, col. 14:8-14 '078 Patent, col. 1:26-37 A party may argue this context implies an active process of identifying and quantifying a deviation from an ideal state, rather than just selecting a profile.

• Term: "mid compensation channel" ('121 Patent, Claim 1)

• Context and Importance: This term defines a key structural and functional component of the invention claimed in the '121 Patent. The dispute may center on whether Samsung's accused software has a logically distinct "channel" for this purpose or if the function is integrated into a larger, inseparable algorithm.

• Intrinsic Evidence for Interpretation:

  • Evidence for a Broader Interpretation: The claim defines the channel functionally as being generated by "applying filters to the mid component that compensate for spectral defects" '121 Patent, col. 26:10-13 This could support an argument that any filtering of the mid-signal for this purpose creates a logical "channel," regardless of its specific software implementation.
  • Evidence for a Narrower Interpretation: The patent's block diagrams (e.g.,'121 Patent, Fig. 2A) depict the crosstalk compensation processor (220) as a discrete block that generates a separate compensation signal (Z) which is then combined with the spatially enhanced signal (E). A party could cite these figures to argue that a structurally distinct or logically separable processing path is required to meet the "channel" limitation.

VI. Other Allegations

• Indirect Infringement: The complaint alleges that Samsung induces infringement of all asserted patents by providing "user manuals and instruction materials on its website" that allegedly encourage and instruct customers to use the Accused Products in an infringing manner Compl. ¶24 Compl. ¶35 Compl. ¶46 It also alleges contributory infringement, stating the Accused Products are not staple articles of commerce and are especially made for infringement Compl. ¶25 Compl. ¶36 Compl. ¶47
• Willful Infringement: Willfulness is alleged for all three patents. The complaint bases this allegation on Samsung's purported pre-suit knowledge of the patents and their relevance, which it claims was established during "licensing discussions with Boomcloud" that began in April 2017 (Compl. ¶7; Compl. ¶8; Compl. ¶9).

VII. Analyst's Conclusion: Key Questions for the Case

• A central issue will be one of architectural correspondence: does the software architecture of Samsung's "360 Audio" feature map onto the specific, multi-step processing paths claimed in the '078 and '121 patents? Specifically, does the accused system separately "determine asymmetries" before applying corrections and generate a distinct "mid compensation channel," or does it achieve a similar perceptual result through a different, indivisible algorithm?
• A second key issue will turn on claim construction and scope: can the phrase "determine asymmetries" in the '078 patent be construed to cover the selection of a pre-configured audio profile based on device metadata (as suggested by the '560 patent's technology), or does it require a more active, dynamic measurement of the listening environment?
• Finally, the case will present a significant evidentiary question of technical proof: beyond the complaint's narrative allegations, what specific evidence from source code, technical documentation, or product reverse-engineering can the plaintiff produce to demonstrate that the accused software performs each of the discrete functional steps required by the asserted claims?