DCT

1:26-cv-23238

Semisilicon Technology Corp v. inMusic LLC

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I. Executive Summary and Procedural Information

  • Parties & Counsel:
  • Case Identification: 1:26-cv-23238, S.D. Fla., 05/07/2026
  • Venue Allegations: Venue is alleged to be proper because each Defendant is a Florida-registered entity with its sole registered agent located in the district, has established systematic and continuous contacts with the district, and has submitted annual reports to the Florida Secretary of State for over ten years.
  • Core Dispute: Plaintiff alleges that Defendants' audio speakers with integrated LED lighting features infringe a patent related to integrated LED lamp package structures.
  • Technical Context: The technology relates to self-contained, individually controllable LED modules that integrate light-emitting diodes, control circuitry, and data/power contacts into a single encapsulated package, facilitating the creation of complex, dynamic lighting systems.
  • Key Procedural History: The patent-in-suit, U.S. Patent No. 8,124,988, survived an ex parte reexamination, with a reexamination certificate issuing on December 13, 2024, which confirmed the patentability of the asserted claim. The complaint also alleges Plaintiff provided Defendants with actual notice of infringement as early as August 2024, followed by a period of unsuccessful negotiations prior to filing suit.

Case Timeline

Date Event
2008-05-28 '988 Patent Priority Date
2012-02-28 '988 Patent Issue Date
2024-08-28 Defendants allegedly receive actual notice of infringement
2024-12-13 '988 Patent Reexamination Certificate Issued
2025-05-15 Semisilicon formally notifies Defendants regarding infringement
2025-10-02 Defendants provide limited sales information during negotiations
2025-10-30 Semisilicon requests complete sales information for all accused models
2026-05-07 Complaint Filed

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

U.S. Patent No. 8,124,988 - "Light emitting diode lamp package structure and assembly thereof,"

  • Patent Identification: U.S. Patent No. 8,124,988 ("the '988 Patent"), "Light emitting diode lamp package structure and assembly thereof," issued February 28, 2012. Compl. ¶21

The Invention Explained

  • Problem Addressed: The patent's background describes prior art LED lamps as lacking autonomous control capabilities. In systems with many LEDs (a "lamp string"), the design of the central controller became increasingly complicated with the number of lamps, and the lamps themselves lacked data input/output pins for sophisticated, daisy-chained control. '988 Patent, col. 1:40-54
  • The Patented Solution: The invention is an integrated LED package structure that encapsulates not only the light-emitting diodes but also a dedicated control integrated circuit (IC) on a circuit board. '988 Patent, abstract This self-contained unit includes distinct conductors for power (positive and negative) and data (input and output), allowing it to receive control signals, illuminate its own LEDs accordingly, and pass control data to the next unit in a series. '988 Patent, FIG. 1 '988 Patent, col. 2:1-20
  • Technical Importance: This architecture simplified the creation of complex, programmable lighting effects in consumer and commercial products by distributing control intelligence to each individual LED package rather than relying on a single, complex central controller. '988 Patent, col. 1:55-63

Key Claims at a Glance

  • The complaint asserts infringement of at least independent claim 1 of the '988 Patent Compl. ¶24 and alleges infringement of "one or more claims" Compl. ¶23
  • The essential elements of independent claim 1 include:
    • A plurality of light emitting diodes (LEDs) sharing a common electrode.
    • A control integrated circuit (IC) with specific electrodes (data input/output, power-in) for receiving external data and controlling the illumination of the LEDs.
    • A set of four conductors (positive DC pad, data input pad, data output pad, negative DC pad) connected to the control IC and LEDs.
    • A package body that encapsulates the LEDs, control IC, and conductors, while leaving portions of the four conductors exposed for external connection.

III. The Accused Instrumentality

Product Identification

The complaint names the "Uber Boom Ultra Water Resistant Bluetooth Stereo Boombox with Lights" as the exemplary accused product Compl. ¶26 It also identifies a list of over 80 other speaker and audio products sold by Defendants under the ION Audio and other brands as having similar infringing LED structures Compl. ¶37

Functionality and Market Context

The accused products are primarily consumer audio speakers that incorporate "multi-colored LED lighting that moves and changes in response to the beat of the music" as a key feature Compl. ¶26 The complaint alleges these products are widely available through retailers like BestBuy and are part of Defendants' broader portfolio of consumer electronics Compl. ¶13 Compl. ¶16 Compl. ¶26 An annotated image in the complaint shows the internal circuit board of the Uber Boom Ultra product. Compl. ¶27

IV. Analysis of Infringement Allegations

'988 Patent Infringement Allegations

Claim Element (from Independent Claim 1) Alleged Infringing Functionality Complaint Citation Patent Citation
a plurality of light emitting diodes, each light emitting diode having two electrode ends and one of the electrode ends being a common electrode end; The accused product's LED package contains multiple light emitting diodes (annotated as red, green, and blue circles) that share a common electrode connected to a positive power terminal ("V+"). ¶29 col. 7:27-30
a control integrated circuit, having a data input electrode, a data output electrode, a positive power-in electrode, and a negative power-in electrode... wherein the control integrated circuit receives external control data via the data input electrode to control the illumination state of each light emitting diode... The LED package contains a control IC that is electrically connected to the LEDs. An oscilloscope waveform is provided as evidence that the IC receives external control data (e.g., 8 bits per color) via a data input pad to control the illumination of the individual LEDs. ¶¶30-33 col. 7:30-41
a first conductor, a second conductor, a third conductor, and a fourth conductor, the first conductor being a positive DC voltage pad... the second conductor being connected to the data input electrode, the third conductor being connected to the data output electrode, the fourth conductor being a negative DC voltage pad... The accused LED package is alleged to have four external connection pads: a positive DC voltage pad ("V+"), a data input pad ("DI"), a data output pad ("DO"), and a negative DC voltage pad ("V-"). The complaint includes a photograph annotating these specific pads on the component. ¶¶34-35 col. 8:42-53
a package body encapsulating the light emitting diodes, the control integrated circuit and the conductors, a portion of the first conductor, the second conductor, the third conductor, and the fourth conductor being exposed outside the package body. The internal LEDs, control IC, and conductors are allegedly encapsulated within a body "formed by using white glue and transparent glue," with the four conductor pads remaining exposed on the exterior of the package for mounting to a circuit board. ¶36 col. 8:54-61
  • Identified Points of Contention:
    • Scope Questions: The complaint's allegations and supporting visuals suggest a very close mapping between the accused component and the claim language. A potential area of dispute may concern the term "package body." The defendant may argue that an application of "white glue and transparent glue" Compl. ¶36 does not constitute a "package body" as the term is understood by a person of ordinary skill in the art, potentially implying a more formally manufactured, unitary housing.
    • Technical Questions: The complaint presents oscilloscope waveforms as evidence that the accused "control integrated circuit" receives external data to control the LEDs Compl. ¶¶32-33 A technical dispute could arise over the interpretation of these waveforms and whether they definitively show the specific control function required by the claim, as opposed to a simpler, non-claimed signaling method.

V. Key Claim Terms for Construction

  • The Term: "control integrated circuit"
  • Context and Importance: This term is central to the invention's novelty, distinguishing it from simple LEDs. The infringement case depends on the chip within the accused LED package qualifying as a "control integrated circuit" that performs the claimed functions. Practitioners may focus on this term because the defendant could argue the component is a simpler LED driver rather than a programmable control circuit.
  • Intrinsic Evidence for Interpretation:
    • Evidence for a Broader Interpretation: The patent provides a functional definition, stating the circuit "receives external control data... controls the luminosity or flashing of LED 11 according to said control data, and outputs the control data" to the next lamp. '988 Patent, col. 4:26-30 This could support a construction covering any IC that performs these specific input, control, and output functions, regardless of its internal architecture.
    • Evidence for a Narrower Interpretation: The patent figures consistently depict the "Control IC" (12) as a distinct component mounted on a circuit board (13) alongside the LEDs (11) '988 Patent, FIG. 1 '988 Patent, FIG. 2A This could support an argument that the term requires a physically separate, packaged IC, potentially excluding a bare die or a more deeply integrated chip-on-board design.

VI. Other Allegations

  • Indirect Infringement: The complaint alleges inducement and contributory infringement Compl. ¶23 The factual basis for inducement may be inferred from allegations that Defendants market and provide instructions for products whose advertised features, such as music-synchronized lighting, necessarily require the LED packages to operate in an infringing manner Compl. ¶26
  • Willful Infringement: The complaint alleges both pre-suit and post-suit willfulness. It pleads that Defendants had actual notice of the '988 Patent and their infringement as early as 2024 Compl. ¶38 Compl. ¶46 It further alleges that Defendants continued to import and sell the accused products after being notified and during unsuccessful negotiations, which the complaint characterizes as a refusal to cooperate in good faith Compl. ¶¶40-42 Compl. ¶47

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

  • A primary issue will be one of definitional scope: can the term "package body," which is described in the patent's embodiments with regular geometric shapes, be construed to read on the accused component's alleged encapsulation in "white glue and transparent glue"? The resolution will depend on whether this method of encapsulation meets the structural requirements understood by a person skilled in the art at the time of the invention.
  • The case may also present a key evidentiary question of component identity: the complaint provides highly detailed visual and electronic evidence purporting to show that a specific component in the accused product meets every limitation of Claim 1. A central question for the court will be whether the defendant can raise a genuine factual dispute over the structure and function of this component, particularly whether it constitutes a "control integrated circuit" that operates in the manner claimed, in light of the oscilloscope evidence provided by the plaintiff.
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