DCT

1:26-cv-01413

ABC IP LLC v. TX Defense Supply LLC

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Amended Complaint
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I. Executive Summary and Procedural Information

  • Parties & Counsel:
  • Case Identification: 1:26-cv-01413, W.D. Tex., 05/27/2026
  • Venue Allegations: Plaintiffs allege venue is proper because Defendants reside in the district, have a regular and established place of business in the district, and have committed alleged acts of infringement there.
  • Core Dispute: Plaintiffs allege that Defendants' "Super Safety" firearm trigger modification kits infringe five patents related to forced reset trigger mechanisms that increase the potential rate of fire of semi-automatic firearms.
  • Technical Context: The technology concerns aftermarket trigger mechanisms for AR-pattern firearms, which use the energy from a reciprocating bolt carrier to mechanically reset the trigger, enabling a faster firing cycle than is possible with a standard semi-automatic trigger.
  • Key Procedural History: The complaint does not mention any prior litigation, Inter Partes Review (IPR) proceedings, or licensing history related to the Asserted Patents.

Case Timeline

Date Event
2021-11-05 '784 Patent Priority Date
2022-01-10 '403 Patent Priority Date
2022-09-08 '247 Patent Priority Date; '159 Patent Priority Date
2023-12-04 '538 Patent Priority Date
2024-07-09 '784 Patent Issue Date
2024-07-16 '247 Patent Issue Date
2026-01-20 '538 Patent Issue Date
2026-03-17 '159 Patent Issue Date
2026-05-26 '403 Patent Issue Date
2026-05-27 Complaint Filing Date

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

U.S. Patent No. 12,038,247 - "Firearm Trigger Mechanism," Issued July 16, 2024

The Invention Explained

  • Problem Addressed: The patent background discusses the desire among some shooters to increase the rate of fire of semi-automatic firearms, and notes that prior art methods like "bump firing" can be difficult to master, while some existing forced-reset trigger devices require modification of other standard firearm components like the bolt carrier '247 Patent, col. 1:35-53
  • The Patented Solution: The patent describes a "drop-in" trigger module that provides three selectable modes: safe, standard semi-automatic, and forced reset semi-automatic '247 Patent, col. 2:21-30 In the forced reset mode, a pivoting cam, actuated by the reciprocating bolt carrier, forces the trigger back to its set position '247 Patent, col. 2:30-34 Critically, a feature on the safety selector simultaneously prevents the disconnector from catching the hammer, which allows for a more rapid firing cycle as the user does not need to manually release the trigger to reset the disconnector '247 Patent, abstract '247 Patent, col. 2:42-52
  • Technical Importance: This design provides selectable standard and forced-reset firing modes within a single "drop-in" module that is compatible with standard AR-pattern bolt carriers, simplifying installation and use '247 Patent, col. 2:21-27

Key Claims at a Glance

  • The complaint asserts independent claim 15 '247 Patent, col. 10:22-65 Compl. ¶34
  • The essential elements of independent claim 15 of the '247 Patent are:
    • A firearm trigger mechanism comprising a hammer, a trigger member, a disconnector, a cam, and a safety selector.
    • The mechanism is operable in a standard semi-automatic mode, where rearward movement of the bolt carrier resets the trigger via the cam, but the disconnector catches the hammer, requiring the user to manually release the trigger to fire again.
    • The mechanism is also operable in a forced reset semi-automatic mode, where rearward movement of the bolt carrier resets the trigger via the cam, and the safety selector prevents the disconnector hook from catching the hammer hook, allowing the user to fire again without manually releasing the trigger.
  • The complaint reserves the right to assert other claims Compl. ¶34

U.S. Patent No. 12,031,784 - "Adapted Forced Reset Trigger," Issued July 9, 2024

The Invention Explained

  • Problem Addressed: The patent explains that a forced reset trigger designed for one firearm platform (e.g., an AR-15) may not work in another (e.g., an AR-10) due to different dimensions and geometry '784 Patent, col. 1:21-31 Specifically, a locking bar long enough to be actuated by an AR-10's bolt carrier might interfere with another part of that same carrier as it cycles rearward, rendering the device inoperable '784 Patent, col. 1:39-44
  • The Patented Solution: The invention is a trigger locking device with a "deflectable" or "folding" upward extension '784 Patent, abstract '784 Patent, col. 2:1-7 This extension is long enough to be actuated by the bolt carrier to unlock the trigger, but it is designed to pivot or fold out of the way to allow the forward portion of the bolt carrier to pass without interference during its rearward cycle '784 Patent, col. 3:55-65
  • Technical Importance: This innovation allows a forced reset trigger mechanism to be adapted for different firearm platforms with varying geometries, overcoming the interference problem posed by a simple rigid locking bar '784 Patent, col. 1:45-49

Key Claims at a Glance

  • The complaint asserts independent claim 1 '784 Patent, col. 5:11-26 Compl. ¶48
  • The essential elements of independent claim 1 of the '784 Patent are:
    • An extended trigger member locking device for a forced reset trigger mechanism.
    • The device comprises a locking member movable between a locked and an unlocked position, actuated by contact with a bolt carrier.
    • The locking member has a body portion and an "upwardly extending deflectable portion that is separately movable relative to the body portion."
  • The complaint reserves the right to assert other claims Compl. ¶48

U.S. Patent No. 12,529,538 - "Safety Mechanism For Firearm," Issued January 20, 2026

  • Patent Identification: U.S. Patent No. 12,529,538, "Safety Mechanism For Firearm," Issued January 20, 2026 Compl. ¶12
  • Technology Synopsis: This patent describes a safety mechanism comprising a cam selector, a lever, and a trigger Compl. ¶24 The cam selector has multiple recesses and is configured to operate in three distinct modes: a standard semi-automatic mode, an "active reset" mode where the cam forces the trigger to reset, and a safe mode that prevents the trigger from being pulled '538 Patent, abstract Compl. ¶24
  • Asserted Claims: Independent Claim 1 Compl. ¶62
  • Accused Features: The complaint alleges that the "Super Safety" product, particularly its multi-mode cam selector that provides for safe, passive reset, and active reset modes, infringes the '538 Patent Compl. ¶28 Compl. ¶64 Compl. p. 35

U.S. Patent No. 12,578,159 - "Firearm Trigger Mechanism," Issued March 17, 2026

  • Patent Identification: U.S. Patent No. 12,578,159, "Firearm Trigger Mechanism," Issued March 17, 2026 Compl. ¶13
  • Technology Synopsis: This patent, a continuation of the application for the '247 Patent, describes a trigger mechanism operable in both a standard semi-automatic mode and a forced reset semi-automatic mode '159 Patent, abstract The mechanism uses a cam, actuated by the firearm's reciprocating bolt, to force the trigger member to its reset position in the forced reset mode Compl. ¶22
  • Asserted Claims: Independent Claim 1 Compl. ¶76
  • Accused Features: The complaint alleges that the "Super Safety" product, with its selectable standard and forced reset semi-automatic modes, infringes the '159 Patent Compl. ¶28 Compl. ¶78

U.S. Patent No. 12,636,403 - "Firearm Trigger Mechanism," Issued May 26, 2026

  • Patent Identification: U.S. Patent No. 12,636,403, "Firearm Trigger Mechanism," Issued May 26, 2026 Compl. ¶14
  • Technology Synopsis: This patent describes a firearm trigger mechanism with a safety selector that allows a user to choose between a "standard semi-automatic" position and a "forced reset semi-automatic" position Compl. ¶25 '403 Patent, abstract In the forced reset mode, the mechanism uses the bolt carrier's movement to force the trigger to reset while preventing the disconnector from catching the hammer '403 Patent, abstract
  • Asserted Claims: Independent Claim 38 Compl. ¶90
  • Accused Features: The complaint alleges that the "Super Safety" product, specifically its safety selector that enables movement between a standard and a forced reset semi-automatic position, infringes the '403 Patent Compl. ¶28 Compl. ¶92

III. The Accused Instrumentality

  • Product Identification: The accused products are the "(3-Position) Super Safety" trigger mechanisms, sold as partial or complete kits via the website www.txdefensesupply.com Compl. ¶¶28-29
  • Functionality and Market Context: The complaint alleges the "Super Safety" is a mechanism designed to be installed in AR-pattern firearms to "actively reset the trigger... to allow the operator to fire again, quickly, and efficiently" Compl. p. 23 The product is alleged to operate in multiple modes, including a "standard semiautomatic with disconnector" mode and a "forced reset semiautomatic with cam" mode, selectable by the user Compl. ¶31 The complaint includes a screenshot from the defendant's website showing the product marketed as "4140 cam, A2 lever, DLC coated" Compl. p. 8

IV. Analysis of Infringement Allegations

'247 Patent Infringement Allegations

Claim Element (from Independent Claim 15) Alleged Infringing Functionality Complaint Citation Patent Citation
A firearm trigger mechanism comprising: a hammer having a sear catch and a hook for engaging a disconnector... a trigger member having a sear... said disconnector having a hook... and a cam having a cam lobe... and a safety selector... The Super Safety is alleged to be a forced reset trigger mechanism that functions as a cam and includes the claimed components when installed Compl. ¶36 ¶36 col. 7:1-8
whereupon in a standard semi-automatic mode, rearward movement of the bolt carrier causes rearward pivoting of said hammer such that said disconnector hook catches said hammer hook... In its standard mode, the rearward movement of the bolt carrier allegedly causes the disconnector hook to catch the hammer hook Compl. ¶36 ¶36 col. 9:11-15
at which time a user must manually release said trigger member to free said hammer from said disconnector to permit said hammer and trigger member to pivot to said set positions... The user must allegedly release the trigger to free the hammer from the disconnector, allowing the trigger to be pulled again Compl. ¶36 ¶36 col. 9:22-29
whereupon in a forced reset semi-automatic mode, rearward movement of the bolt carrier causes rearward pivoting of said hammer such that said disconnector hook is prevented from catching said hammer hook, In forced reset mode, the complaint alleges rearward bolt carrier movement causes the disconnector hook to be prevented from catching the hammer hook, as illustrated in a plaintiff-generated rendering Compl. ¶36 ¶36 col. 9:31-36
at which time the user can pull said trigger member to fire the firearm. After the bolt carrier returns to battery, the user can allegedly pull the trigger to fire the firearm without first releasing it Compl. ¶36 ¶36 col. 9:50-54

'784 Patent Infringement Allegations

Claim Element (from Independent Claim 1) Alleged Infringing Functionality Complaint Citation Patent Citation
In a forced rest trigger mechanism, an extended trigger member locking device, comprising: a locking member that is movable between a first position in which it locks a trigger... and a second position where it does not restrict movement... The Super Safety allegedly operates as a locking member, moving between a locked first position and an unlocked second position Compl. ¶50 ¶50 col. 2:56-59
and including a generally upward extension portion configured to make actuating contact with a surface of a bolt carrier... The Super Safety allegedly has an upward extending lever arm configured to make actuating contact with the bolt carrier Compl. ¶50 ¶50 col. 3:40-43
the locking member having a body portion that is movably supported and an upwardly extending deflectable portion that is separately movable relative to the body portion... The complaint does not specifically break down the "body portion" and "deflectable portion," but alleges the device as a whole functions as an extended trigger member locking device, providing plaintiff-generated renderings to show its operation Compl. ¶50 ¶50 col. 2:61-65
  • Identified Points of Contention:
    • Factual Accuracy of Renderings: The infringement allegations for all patents rely heavily on "Plaintiff-generated renderings" of the accused product's internal mechanics Compl. p. 10 Compl. p. 23 A central point of contention will be a factual one: whether these color-coded diagrams accurately represent the structure and operation of the defendants' "Super Safety" product.
    • Scope Questions ('247 Patent): A key legal question may be the scope of the functional limitation "prevented from catching said hammer hook." The patent specification discloses a specific mechanism where the safety selector physically blocks the disconnector '247 Patent, col. 8:55-64 The dispute may focus on whether the accused device achieves this result in a way that falls within the scope of the claim, as construed by the court.
    • Technical Questions ('784 Patent): The infringement analysis for the '784 patent raises the question of whether the accused device's lever arm constitutes a "deflectable portion that is separately movable relative to the body portion." The court may need to determine if this requires a distinct, hinged component as shown in some patent figures, or if it can also read on a unitary but flexible component.

V. Key Claim Terms for Construction

For U.S. Patent No. 12,038,247 (Claim 15)

  • The Term: "prevented from catching said hammer hook"
  • Context and Importance: This phrase defines the key functional difference between the claimed "standard" and "forced reset" modes. The mechanism of "prevention" is central to the infringement analysis. Practitioners may focus on this term because how the accused device achieves a forced reset-and whether that method constitutes "preventing" the catch as claimed-will be a critical issue.
  • Intrinsic Evidence for Interpretation:
    • Evidence for a Broader Interpretation: The claim uses broad functional language ("prevented from"), which may support an interpretation covering any mechanism that achieves the result of the disconnector not engaging the hammer in the forced reset mode.
    • Evidence for a Narrower Interpretation: The specification describes a specific embodiment where "a narrow semi-circular portion 116 [of the safety selector]... prevents the disconnector 60 from pivoting with the trigger member 38 thus preventing the disconnector hook 64 from catching the hammer hook 53" '247 Patent, col. 8:57-62 This may support an argument that the claim should be construed more narrowly to require a similar physical blocking by the safety selector itself.

For U.S. Patent No. 12,031,784 (Claim 1)

  • The Term: "separately movable relative to the body portion"
  • Context and Importance: This term is the core of the invention, distinguishing it from a simple, rigid locking bar. The dispute will likely center on whether the accused device's lever is "separately movable" from its base or body.
  • Intrinsic Evidence for Interpretation:
    • Evidence for a Broader Interpretation: The claim itself uses the term "deflectable portion," and the summary of the invention mentions the extension may "deflect or fold" '784 Patent, col. 2:5-6 This language may support a construction that includes not just separately hinged parts but also unitary components designed to flex or bend.
    • Evidence for a Narrower Interpretation: The detailed description illustrates two distinct embodiments: one where the extension pivots on its own pin separate from the body's pivot pin '784 Patent, Fig. 2, and another where the extension and body pivot on a shared axis but can move relative to each other '784 Patent, Fig. 8 A party could argue that "separately movable" requires such a multi-part construction, rather than simple material flexure of a single piece.

VI. Other Allegations

  • Indirect Infringement: The complaint alleges that Defendants induce infringement by "encouraging, advertising, promoting, and instructing others to use and/or how to use the Super Safety" Compl. ¶37 Compl. ¶51 It further alleges contributory infringement by selling components, such as the cam and lever, that are "specially designed" for infringement and "not suitable for substantial noninfringing use" Compl. ¶39 Compl. ¶53
  • Willful Infringement: The complaint alleges willful infringement based on Defendants having "known or should have known" that their actions constituted infringement of patents that are presumed valid Compl. ¶40 Compl. ¶54 The allegations state this knowledge exists "at least through the service of this complaint" Compl. ¶40 Compl. ¶54

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

This case presents several key questions for the court that will likely determine its outcome:

  • A primary evidentiary question will be one of technical accuracy: do the "Plaintiff-generated renderings" presented in the complaint accurately depict the structure and mechanical operation of the accused "Super Safety" product? The resolution of the infringement claims depends heavily on the factual accuracy of these diagrams.
  • A core issue will be one of definitional scope for the '784 Patent: can the claim term "separately movable relative to the body portion," which the patent illustrates with hinged, multi-part components, be construed to cover the specific design of the accused device's lever arm?
  • A central question of functional interpretation for the '247 Patent (and related patents) will be: does the accused product's mechanism for achieving a forced reset operate by "preventing the disconnector hook from catching said hammer hook" in a manner that falls within the scope of the claims, especially given the specific blocking mechanism described in the patent's specification?
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