DCT

0:26-cv-61380

Semisilicon Technology Corp v. inMusic LLC

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Amended Complaint
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I. Executive Summary and Procedural Information

  • Parties & Counsel:
  • Case Identification: 0:26-cv-61380, S.D. Fla., 06/29/2026
  • Venue Allegations: Venue is asserted on the basis that each Defendant is a Florida corporation or limited liability company with a registered agent located within the Southern District of Florida.
  • Core Dispute: Plaintiff alleges that Defendant's LED-enabled audio speakers infringe a patent related to an integrated LED package structure that includes a control circuit.
  • Technical Context: The technology concerns "addressable" or "smart" LEDs, where each LED package contains its own control logic, allowing individual control of color and brightness in a series, which is fundamental to modern dynamic lighting displays.
  • Key Procedural History: The patent-in-suit, U.S. Patent No. 8,124,988, underwent an ex parte reexamination, with a certificate issued on December 13, 2024, confirming the patentability of the asserted claims. The complaint also details a history of pre-suit negotiations, including a specific notice of infringement in May 2025.

Case Timeline

Date Event
2008-05-28 '988 Patent Priority Date
2012-02-28 '988 Patent Issue Date
2024-08-28 Defendant had actual notice of infringement no later than this date
2024-12-13 '988 Patent Reexamination Certificate Issued
2025-05-15 Plaintiff formally notified Defendants of infringement
2025-10-02 Defendants provided limited sales information to Plaintiff
2025-10-30 Plaintiff requested complete sales information from Defendants
2026-06-29 First Amended 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.

The Invention Explained

  • Problem Addressed: The patent describes a limitation in prior art LED lamps, which lacked integrated data input and output capabilities. This made it complex to design controllers for lamp strings, especially as the number of LEDs increased, and limited the ability to exert diverse control over individual lamp luminosity and flashing patterns '988 Patent, col. 2:41-50
  • The Patented Solution: The invention is a self-contained LED lamp package that integrates multiple LEDs, a control integrated circuit (IC), and the necessary conductors for power and data onto a single circuit board, all encapsulated within a single package body '988 Patent, abstract This design creates a "smart" LED component with dedicated data-in and data-out pins, allowing many such components to be easily daisy-chained and individually controlled using a simple data signal, as illustrated in the block diagram of Figure 1 '988 Patent, Fig. 1 '988 Patent, col. 4:26-31
  • Technical Importance: This integrated approach simplifies the design of complex, dynamic lighting systems by embedding the control logic within each light-emitting element, a foundational concept for modern addressable LED strips and matrices.

Key Claims at a Glance

  • The complaint asserts at least independent claim 1 of the '988 Patent Compl. ¶22
  • The essential elements of independent claim 1 are:
    • A plurality of light emitting diodes (LEDs) with a common electrode end.
    • A control integrated circuit (IC) electrically connected to the LEDs, having electrodes for power-in, data-in, and data-out, which uses external control data to control the illumination state of each LED.
    • A set of four conductors: a positive DC voltage pad (first), a data input conductor (second), a data output conductor (third), and a negative DC voltage pad (fourth), with specified connections to the common LED electrode and the control IC's electrodes.
    • A package body that encapsulates the LEDs, control IC, and conductors, with a portion of the four conductors exposed outside the package body.

III. The Accused Instrumentality

Product Identification

  • The complaint primarily details infringement by the ION Audio "Uber Boom Ultra" speaker but also lists over 80 other LED-enabled audio products sold under the ION brand and others managed by the Defendants Compl. ¶24 Compl. ¶35

Functionality and Market Context

  • The Uber Boom Ultra is a portable Bluetooth speaker that features "multi-colored LED lighting that moves and changes in response to the beat of the music" Compl. ¶24
  • The complaint alleges that the accused speaker contains a "LED lamp package structure" that embodies the patented invention Compl. ¶25 To support this, the complaint provides photographs of the speaker's internal printed circuit board (PCB), showing a surface-mount device (SMD) alleged to be the infringing LED package Compl. p. 8 The complaint further includes annotated close-up images of this component, identifying the internal LEDs, control IC, and external connection pads Compl. pp. 9-15 This image shows the internal componentry of the accused LED package. Compl. p. 9

IV. Analysis of Infringement Allegations

The complaint provides a detailed infringement theory against the Uber Boom Ultra speaker, supported by annotated photographs of the product's internal components.

'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 LED package includes red, green, and blue light emitting diodes encapsulated inside the package body, each having two electrode ends, with one end connected to a common positive power terminal. ¶27 col. 4:10-14
a control integrated circuit, having a data input electrode, a data output electrode, a positive power-in electrode, and a negative power-in electrode... [which] receives external control data... to control the illumination state of each light emitting diode... The accused package includes a control IC that receives external control data (shown via oscilloscope waveforms) via a data input electrode to control the illumination state of the red, green, and blue LEDs. The image shows oscilloscope waveforms reflecting 8-bit control signals for the red, green, and blue LEDs. Compl. pp. 12-13 ¶¶28-31 col. 4:26-31
a first conductor, a second conductor, a third conductor, and a fourth conductor... [with specified connections] The accused package has four external pads: a first conductor (positive DC voltage pad), a second conductor (data input pad), a third conductor (data output pad), and a fourth conductor (negative DC voltage pad), which are alleged to be connected as claimed. The annotated image shows the alleged layout of these four conductors. Compl. p. 14 ¶¶32-33 col. 7:9-14
a package body encapsulating the light emitting diodes, the control integrated circuit and the conductors, a portion of the... conductors being exposed outside the package body. The accused product's LED package is formed by white and transparent glue that encapsulates the LEDs, control IC, and internal conductors, leaving the four external conductor pads exposed for mounting. The annotated image labels the "package body of the accused product" and the "four conductors exposed outside the package body." Compl. p. 15 ¶34 col. 4:32-35

Identified Points of Contention

  • Scope Questions: A central question may be whether a standard, off-the-shelf surface-mount LED component, as depicted in the complaint, falls within the scope of the claimed "LED lamp package structure." The defense may argue that the patent's specific embodiments, which include spherical shapes and flexible wire supports, distinguish it from the accused rectangular component with flat solder pads.
  • Technical Questions: The infringement allegation hinges on the precise internal wiring of the accused LED component. A key factual question will be whether the plaintiff can prove that the "first conductor" (the positive voltage pad) is electrically connected to both the "common electrode of each light emitting diode" and the "positive power-in electrode of the control integrated circuit," as strictly required by the claim language. The complaint's annotations assert this connection, but it remains a matter for technical evidence.

V. Key Claim Terms for Construction

  • The Term: "package body encapsulating"

    • Context and Importance: This term is central to defining the physical scope of the invention. The dispute will likely focus on whether the accused product's standard surface-mount component, which is itself a package, is "encapsulating" the other elements in the manner claimed, or if the claim requires a more bespoke assembly. Practitioners may focus on this term because the patent describes various forms of encapsulation, and the interpretation could either broadly cover common components or be limited to the specific examples shown.
    • Intrinsic Evidence for Interpretation:
      • Evidence for a Broader Interpretation: The claim language itself is broad, simply requiring "a package body encapsulating" the elements '988 Patent, col. 8:4-5 The abstract similarly refers to the components being "encapsulated inside a package body" without specifying its form '988 Patent, abstract
      • Evidence for a Narrower Interpretation: The specification provides specific, potentially limiting examples, such as a body made of "injection-molded transparent glue in spherical or hemispherical shape" '988 Patent, col. 2:41-43 and shows figures with non-standard form factors '988 Patent, Fig. 3A '988 Patent, Fig. 3B

  • The Term: "conductor"

    • Context and Importance: Claim 1 recites four specific "conductors" that are partially exposed outside the package. The accused product utilizes flat solder pads on a surface-mount component. The definition of "conductor" will determine if these pads meet the claim limitation.
    • Intrinsic Evidence for Interpretation:
      • Evidence for a Broader Interpretation: The patent frequently uses the broader term "electric conductivity supports" interchangeably with conductor, which could reasonably include solder pads '988 Patent, abstract '988 Patent, col. 1:5-8 The patent also explicitly discloses a rectangular package with electrode "pads" intended for surface mounting, similar to the accused device '988 Patent, col. 5:40-48 '988 Patent, Fig. 4A
      • Evidence for a Narrower Interpretation: Several embodiments depict the "conductors" as flexible wires or distinct, elongated supports rather than integrated pads, which could support an argument for a narrower construction '988 Patent, Fig. 2A '988 Patent, Fig. 5 '988 Patent, col. 5:6-7

VI. Other Allegations

  • Indirect Infringement: The complaint alleges that Defendants acted in concert to "directly or indirectly infringe" and are responsible for inducing or contributing to infringement Compl. ¶21 Compl. ¶23 However, it does not provide specific factual allegations typically used to support inducement, such as citing instructions in user manuals that direct customers to perform infringing acts.
  • Willful Infringement: The complaint alleges willful infringement based on Defendants having received actual notice of the '988 Patent and their infringement "as early as 2024" and no later than August 28, 2024 Compl. ¶36 Compl. ¶44 It further specifies that a formal notification was sent on May 15, 2025, and that Defendants continued their allegedly infringing conduct despite these notices and subsequent licensing negotiations Compl. ¶39 Compl. ¶45

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

  1. A core issue will be one of claim scope and construction: Can the term "LED lamp package structure", as defined by the specific conductor connections and "package body" of Claim 1, be construed to read on a common, mass-produced surface-mount "smart" LED component? The outcome may depend on whether the court adopts a broad definition based on the claimed function or a narrower one tied to the patent's specific embodiments.

  2. A second central issue will be evidentiary proof of infringement: Assuming the claim construction is broad enough, can the Plaintiff provide definitive technical evidence demonstrating that the internal electrical pathways of the accused off-the-shelf component exactly match the specific, multi-part connection requirements recited for each of the four conductors in Claim 1?

  3. A final question relates to damages and willfulness: Given the complaint's detailed timeline of pre-suit notice and the patent's survival of reexamination, a key focus will be on whether the Defendants' conduct following notice rises to the level of willfulness, which could expose them to enhanced damages if infringement is found.

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