Boomcloud 360 Inc v. Target Corp Inc

I. Executive Summary and Procedural Information

• Parties & Counsel:
  • Plaintiff: Boomcloud 360, Inc. (Delaware)
  • Defendant: Target Corporation (Minnesota)
  • Plaintiff's Counsel: Russ August & Kabat
• Case Identification: 2:26-cv-00489, E.D. Tex., 06/17/2026
• Venue Allegations: Plaintiff alleges venue is proper in the Eastern District of Texas because Defendant transacts business, has committed acts of infringement, and maintains regular and established places of business within the district. The complaint also notes that Target has previously admitted to or not contested venue in other patent cases in the same district.
• Core Dispute: Plaintiff alleges that Defendant's sale of various Samsung electronic devices featuring spatial audio functionality infringes three of its patents related to digital audio signal processing, spatial audio enhancement, and crosstalk cancellation.
• Technical Context: The technology at issue involves algorithms for processing stereo audio signals to create a more immersive, three-dimensional sound field and to correct for acoustical distortions and asymmetries in real-world listening environments.
• Key Procedural History: The complaint alleges that Defendant had pre-suit knowledge of the asserted patents and their relevance to its products as a result of prior "licensing discussions with Boomcloud." It also notes that Plaintiff's technology has been licensed to other major technology and telecommunications companies, including Verizon, Boost Mobile, and Qualcomm.

Case Timeline

Date	Event
2016-01-18	Priority Date for U.S. Patent No. 10,721,564
2017-07-11	Priority Date for U.S. Patent No. 10,313,820
2017-11-29	Priority Date for U.S. Patent No. 10,757,527
2019-06-04	U.S. Patent No. 10,313,820 Issued
2020-07-21	U.S. Patent No. 10,721,564 Issued
2020-08-25	U.S. Patent No. 10,757,527 Issued
2026-06-17	Complaint Filed

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

U.S. Patent No. 10,721,564

• Patent Identification: U.S. Patent No. 10,721,564, titled "Subband Spatial and Crosstalk Cancellation for Audio reporoduction", issued on July 21, 2020 Compl. ¶13
• The Invention Explained:
  • Problem Addressed: In stereophonic sound reproduction, sound from each speaker reaches both of the listener's ears. This phenomenon, known as "crosstalk interference," can degrade the listener's ability to perceive the spatial location of sound sources within the audio mix US 10,721,564 B2, col. 1:47-52
  • The Patented Solution: The patent describes a multi-stage audio processing method. First, it generates a "crosstalk compensation signal" to preemptively correct for spectral artifacts that will be introduced by the subsequent cancellation step US 10,721,564 B2, col. 15:27-34 It then combines this compensation signal with a spatially-enhanced audio signal before performing the final "crosstalk cancellation" process, which is designed to remove the unwanted crosstalk from the audio delivered to the listener US 10,721,564 B2, abstract Processing the audio in distinct frequency subbands allows for more tailored adjustments across the audio spectrum US 10,721,564 B2, col. 2:18-28
  • Technical Importance: This method provides a sophisticated approach to creating a wider, more convincing stereo image from a standard speaker setup by not only canceling crosstalk but also proactively compensating for the artifacts that cancellation itself can create.
• Key Claims at a Glance:
  • The complaint asserts independent claim 6 Compl. ¶15 Analyst Note: The complaint refers to claim 6 as independent; however, it is dependent on independent claim 1. The elements below reflect the combination of claims 1 and 6.
  • The asserted method claim includes the following essential elements:
    • Determining a speaker parameter for a first and second speaker, comprising determining at least one of: a distance between the speaker and a listener, or an output frequency range of the speaker.
    • Generating a compensation signal for a plurality of frequency bands to remove estimated spectral defects from crosstalk cancellation.
    • Precompensating the audio signal by adding the compensation signal to generate a precompensated signal.
    • Performing crosstalk cancellation on the precompensated signal based on the speaker parameter.
  • The complaint does not explicitly reserve the right to assert other claims but infringement is alleged for "one or more claims" Compl. ¶15

U.S. Patent No. 10,757,527

• Patent Identification: U.S. Patent No. 10,757,527, titled "Crosstalk Cancellation B-Chain", issued on August 25, 2020 Compl. ¶25
• The Invention Explained:
  • Problem Addressed: The ideal stereo listening experience requires the listener to be in a "sweet spot" relative to symmetrically placed, identical speakers. In the real world, this is rarely the case. A listener may be off-center, or the speakers themselves may be mismatched in frequency response or physical properties, creating asymmetries that degrade the audio experience US 10,757,527 B2, col. 1:21-48
  • The Patented Solution: The patent discloses a "b-chain processor" that electronically corrects for such real-world asymmetries. The system first determines asymmetries between the left and right speakers in frequency response, time alignment, and/or signal level for a given listening position US 10,757,527 B2, col. 2:1-4 It then generates corrected output channels by applying an N-band equalization (for frequency), a delay (for time), and a gain (for level) to the audio signal to compensate for the identified asymmetries and restore a balanced, near-ideal spatial image US 10,757,527 B2, abstract US 10,757,527 B2, col. 2:5-11
  • Technical Importance: This technology enables a high-fidelity, spatially-correct audio experience in common but acoustically imperfect consumer environments, such as listening on a laptop with unmatched speakers or from an off-center position relative to a soundbar.
• Key Claims at a Glance:
  • The complaint asserts independent claim 21 Compl. ¶27
  • The asserted method claim includes the following essential elements:
    • Determining asymmetries between a left speaker and a right speaker in frequency response, time alignment, and signal level for a listening position.
    • Generating a left and right output channel by applying at least one of:
      • An N-band equalization to the input audio signal to adjust for the frequency response asymmetry.
      • A delay to the input audio signal to adjust for the time alignment asymmetry.
      • A gain to the input audio signal to adjust for the signal level asymmetry.
  • The complaint alleges infringement of "one or more claims," including claim 21 Compl. ¶27

Multi-Patent Capsule: U.S. Patent No. 10,313,820

• Patent Identification: U.S. Patent No. 10,313,820, titled "Sub-band Spatial Audio Enhancement", issued on June 4, 2019 Compl. ¶37
• Technology Synopsis: The patent addresses the general goal of enhancing the spatial qualities of a stereo audio signal US 10,313,820 B2, col. 1:8-13 The disclosed solution involves processing a stereo signal by separating it into a "spatial component" (representing the difference between left and right channels, or "side" information) and a "nonspatial component" (representing the sum of the channels, or "mid" information). The system then processes these components in separate frequency subbands, applying distinct gains to each before recombining them to create an enhanced output US 10,313,820 B2, abstract
• Asserted Claims: The complaint asserts independent claim 1 Compl. ¶39
• Accused Features: The complaint accuses the "spatial audio" features of a wide range of Samsung electronic devices and audio accessories, including various Galaxy phones, tablets, and Buds models Compl. ¶38

III. The Accused Instrumentality

• Product Identification: The complaint identifies a broad array of "electronic devices supporting spatial audio," specifically naming dozens of Samsung-branded products. These include the Samsung Galaxy S10 through S25 series phones, Galaxy Note series phones, Galaxy Z Flip and Z Fold series phones, Galaxy Tab series tablets, and various Galaxy Buds audio accessories Compl. ¶14 Compl. ¶26 Compl. ¶38
• Functionality and Market Context: The core accused functionality is the "spatial audio" feature present in these devices Compl. ¶14 The complaint does not provide a detailed technical breakdown of how this feature operates within the accused products. Instead, it asserts that the products' normal operation directly infringes the patents Compl. ¶14 Compl. ¶26 Compl. ¶38 The sheer number of listed flagship products suggests that the accused functionality is a commercially significant feature integrated across Samsung's mobile and audio product lines. No probative visual evidence provided in complaint.

IV. Analysis of Infringement Allegations

The complaint references claim chart exhibits (Exhibits 2, 4, and 6) that are incorporated by reference but are not attached to the filed complaint document Compl. ¶15 Compl. ¶27 Compl. ¶39 Therefore, the detailed infringement allegations are summarized below in prose.

For U.S. Patent No. 10,721,564, the complaint alleges that the Accused Products satisfy all limitations of claim 6 Compl. ¶15 The narrative infringement theory is that the products' spatial audio systems perform a method that involves determining speaker parameters, generating a pre-emptive compensation signal for crosstalk artifacts, and then performing crosstalk cancellation, thereby mapping to the claimed steps.

For U.S. Patent No. 10,757,527, the complaint alleges that the Accused Products satisfy all limitations of claim 21 Compl. ¶27 The infringement theory is that the devices' spatial audio feature functions as a "B-Chain" processor by determining and correcting for asymmetries in the listening environment-specifically regarding frequency response, time alignment, and signal level-through the application of equalization, delay, and gain as required by the claim.

• Identified Points of Contention:
  • Evidentiary Questions: A primary point of contention may be evidentiary. The complaint makes broad assertions that the "spatial audio" features of the Accused Products perform the specific, multi-step methods of the asserted claims. A potential defense could challenge whether the products' actual functionality matches the patent-specific definitions of steps like generating a "crosstalk compensation signal" ('564 Patent) or "determin[ing] asymmetries" ('527 Patent).
  • Scope Questions: The dispute may raise questions about the scope of the claims. For the '564 Patent, does any form of audio pre-processing qualify as the claimed "crosstalk compensation," or is the term limited to the specific embodiments disclosed? For the '527 Patent, does a user's selection of a pre-set audio profile (e.g., "Movie Mode") meet the "determine asymmetries" limitation, or does the claim require active, real-time sensing of the listening environment?

V. Key Claim Terms for Construction

U.S. Patent No. 10,721,564

• The Term: "crosstalk compensation signal"
• Context and Importance: This signal is a central component of the claimed invention, generated to pre-emptively fix artifacts from a later step. Infringement hinges on showing the accused devices create this specific signal. Practitioners may focus on this term because its definition will determine whether a generic audio pre-processing signal falls within the scope of the claim.
• Intrinsic Evidence for Interpretation:
  • Evidence for a Broader Interpretation: The patent describes the signal's purpose broadly as being for "precompensat[ing] for any artifacts in a subsequent crosstalk cancellation" US 10,721,564 B2, col. 15:28-32, which could be argued to encompass a variety of predictive audio correction signals.
  • Evidence for a Narrower Interpretation: The specification provides a detailed embodiment where the signal Z is generated from a "nonspatial component" Xn using a specific cascade of an amplifier, a filter, and a delay unit US 10,721,564 B2, col. 12:15-32 US 10,721,564 B2, FIG. 6 This may support an argument that the term is limited to a signal generated in this or a structurally similar manner.

U.S. Patent No. 10,757,527

• The Term: "determine asymmetries"
• Context and Importance: This is the initiating step of the claimed method. The case depends on whether the accused products are found to actually "determine" the specified asymmetries (in frequency, time, and level) or merely apply a generic effect.
• Intrinsic Evidence for Interpretation:
  • Evidence for a Broader Interpretation: The patent suggests that asymmetries can be "pre-defined for a particular set of speakers" US 10,757,527 B2, col. 15:20-23 This could support a reading where selecting a device profile or using a device with known speaker properties constitutes "determining" the asymmetry.
  • Evidence for a Narrower Interpretation: The patent describes a system that "corrects the above relative differences in delay, signal level, and frequency response, resulting in a restored near-ideal spatial image" US 10,757,527 B2, col. 14:11-15 This suggests an active process of identifying and correcting specific, situational differences, potentially supporting a narrower construction that requires more than applying a static profile.

VI. Other Allegations

• Indirect Infringement: For all three patents, the complaint alleges induced infringement, stating that the Defendant encourages and instructs customers to use the Accused Products in an infringing manner through "user manuals and instruction materials" Compl. ¶16 Compl. ¶28 Compl. ¶40 Contributory infringement is also alleged, based on the assertion that components of the Accused Products are especially made for use in an infringing way and are not staple articles of commerce Compl. ¶17 Compl. ¶29 Compl. ¶41
• Willful Infringement: The complaint alleges willful infringement for all three patents. The basis for willfulness is an allegation of pre-suit knowledge stemming from "licensing discussions with Boomcloud" Compl. ¶18 Compl. ¶30 Compl. ¶42 The complaint also asserts ongoing willful infringement based on knowledge gained from the complaint itself.

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

1. Pleading Sufficiency vs. Technical Proof: A threshold issue will be whether the complaint's allegations are sufficiently detailed to be plausible. Given the reliance on unattached exhibits for the technical infringement mapping, the case may see early challenges regarding whether the complaint provides enough factual substance beyond conclusory assertions to support its claims, particularly under the Twombly/Iqbal pleading standard.

2. Claim Construction and Functional Equivalence: The case will likely turn on claim construction. For the '527 patent, a core issue will be one of definitional scope: does the term "determine asymmetries" require active, real-time measurement of a listening environment, or can it be satisfied by the application of pre-configured audio profiles designed for known device characteristics? For the '564 patent, a key question will be one of functional equivalence: does the accused "spatial audio" feature generate a "crosstalk compensation signal" as specifically contemplated by the patent, or does it perform a more generic form of audio processing that falls outside the claim's scope?

3. Willfulness and Pre-Suit Knowledge: The allegation of pre-suit knowledge from prior "licensing discussions" significantly raises the potential for enhanced damages. A central factual dispute will likely surround the content and context of these discussions: did they provide Target with actual, unambiguous notice of the asserted patents and their specific relevance to the accused products, thereby supporting a finding of willful infringement?