DCT

5:26-cv-00156

ABC IP LLC v. Mercier & Sons LLC

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I. Executive Summary and Procedural Information

  • Parties & Counsel:
  • Case Identification: 5:26-cv-00156, N.D. Fla., 06/09/2026
  • Venue Allegations: Venue is alleged to be proper as Defendants reside in, have committed acts of infringement in, and have a regular and established place of business in the Northern District of Florida.
  • Core Dispute: Plaintiffs allege that Defendants' firearm trigger modification kits-marketed as the "Super Safety," "ARC-Fire," and "Kabuto"-infringe five U.S. patents related to "forced reset" trigger mechanisms designed to accelerate the rate of fire of semi-automatic firearms.
  • Technical Context: The technology at issue involves mechanical trigger assemblies for semi-automatic firearms, specifically AR-platform rifles, that use the energy from the weapon's cycling action to physically reset the trigger, enabling a faster potential rate of fire than standard mechanisms.
  • Key Procedural History: The complaint states that Plaintiff ABC IP, LLC is the owner by assignment of the asserted patents and that Plaintiff Rare Breed Triggers, Inc. is the exclusive licensee.

Case Timeline

Date Event
2021-11-05 Priority Date for '784 Patent
2022-01-10 Priority Date for '403 Patent
2022-09-08 Priority Date for '247 and '159 Patents
2023-12-04 Priority Date for '538 Patent
2024-07-09 '784 Patent Issued
2024-07-16 '247 Patent Issued
2025-11-18 Date noted on "Spare parts (TURD/Kabuto remix)" product page
2026-01-20 '538 Patent Issued
2026-02-02 Date noted on "3 position selector for short stepper" product page
2026-03-17 '159 Patent Issued
2026-05-13 Date noted on "The R.A.D. Drop in style" product page
2026-05-26 '403 Patent Issued
2026-06-09 Complaint Filed

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: Standard semi-automatic triggers include a "disconnector" that holds the hammer after a shot is fired until the user manually releases the trigger, which limits the potential rate of fire Compl. ¶¶21-22 The patent notes that while shooters desire to increase the rate of fire, prior methods like "bump firing" have their own limitations '247 Patent, col. 1:41-59
  • The Patented Solution: The invention is a trigger mechanism with at least two selectable modes: a standard semi-automatic mode and a "forced reset" mode Compl. ¶24 In the forced reset mode, a pivoting cam is actuated by the rearward movement of the firearm's bolt carrier. This cam mechanically "forces the trigger member to the set position," allowing a user to fire again without fully releasing their finger, thereby enabling a more rapid firing sequence '247 Patent, abstract '247 Patent, col. 2:55-67
  • Technical Importance: The invention provides a method for mechanically accelerating the firing sequence of a semi-automatic firearm by linking the trigger reset to the firearm's own cycle of operation Compl. ¶24

Key Claims at a Glance

  • The complaint asserts independent claim 15 Compl. ¶43
  • Essential elements of Claim 15:
    • A firearm trigger mechanism comprising a hammer, a trigger member, a disconnector, and a cam with a cam lobe.
    • The cam is movable between a first position (for standard mode) and a second position (for forced reset mode).
    • In standard semi-automatic mode, the cam is in the first position; the disconnector hook catches the hammer hook after firing, and the user must manually release the trigger to reset the mechanism.
    • In forced reset semi-automatic mode, the cam is in the second position; rearward bolt carrier movement causes the cam lobe to force the trigger member to its set position, and the disconnector hook is prevented from catching the hammer hook, allowing the user to fire again without manual trigger release.
  • The complaint reserves the right to assert other claims from the '247 Patent Compl. ¶43

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

The Invention Explained

  • Problem Addressed: The patent describes a compatibility issue when adapting forced reset triggers from one firearm platform (e.g., AR-15) to another with different dimensions (e.g., AR-10). In an AR-10, the bolt carrier sits differently relative to the trigger group. A simple extension of the trigger's locking member to ensure contact with the bolt carrier would then interfere with a lower surface of the bolt carrier as it cycles rearward, rendering the device inoperable '784 Patent, col. 1:20-44
  • The Patented Solution: The invention is a trigger locking device with a "deflectable extension." This extension is long enough to be actuated by the forward-moving bolt carrier (to unlock the trigger) but is also hinged or designed to "deflect or fold" out of the way to allow the rearward-moving bolt carrier to pass without interference '784 Patent, abstract '784 Patent, col. 2:4-10 The separate movability of this extension relative to the main body of the locking member is a key feature '784 Patent, col. 2:60-65
  • Technical Importance: This design overcomes geometric limitations of prior art, enabling a forced reset trigger mechanism to be compatible with multiple semi-automatic firearm designs that have different internal dimensions Compl. ¶25

Key Claims at a Glance

  • The complaint asserts independent claim 1 Compl. ¶59
  • Essential elements of Claim 1:
    • An extended trigger member locking device for a forced rest trigger mechanism.
    • The device comprises a locking member movable between a locked first position and an unlocked second position.
    • The locking member has a body portion and an "upwardly extending deflectable portion that is separately movable relative to the body portion."
    • The deflectable portion moves between an extended position and a deflected position.
    • Actuating contact with a bolt carrier causes the locking member to move from the first to the second position.
  • The complaint reserves the right to assert other claims from the '784 Patent Compl. ¶59

Multi-Patent Capsules

  • U.S. Patent No. 12,529,538, "Safety Mechanism for Firearm," issued January 20, 2026
    • Technology Synopsis: This patent details a safety mechanism for a firearm that uses a cam selector with multiple recesses and detent tracks. The cam selector interacts with a "first trigger tail portion" to enable operation in three distinct modes: a first mode (standard semi-automatic), a second mode (active/forced reset), and a third mode (safe), which prevents the trigger from being pulled Compl. ¶26 '538 Patent, abstract
    • Asserted Claims: Independent claim 1 is asserted Compl. ¶74
    • Accused Features: The "Super Safety" product is alleged to embody the claimed technology Compl. ¶74
  • U.S. Patent No. 12,578,159, "Firearm Trigger Mechanism," issued March 17, 2026
    • Technology Synopsis: This patent, a continuation of the application leading to the '247 Patent, describes a firearm trigger mechanism operable in both a standard semi-automatic mode and a forced reset semi-automatic mode. The mechanism uses a cam, actuated by the firearm's reciprocating bolt, to force the trigger member back to its set position, thereby enabling a rapid rate of fire '159 Patent, abstract Compl. ¶24
    • Asserted Claims: Independent claim 1 is asserted Compl. ¶88
    • Accused Features: The "Super Safety," "ARC-Fire," and "Kabuto" products are alleged to infringe Compl. ¶88
  • U.S. Patent No. 12,636,403, "Firearm Trigger Mechanism," issued May 26, 2026
    • Technology Synopsis: This patent describes a firearm trigger mechanism that can be operated in two distinct modes: a standard disconnector semi-automatic mode and a forced reset semi-automatic mode. The user can switch between these modes using a safety selector '403 Patent, abstract Compl. ¶27
    • Asserted Claims: Independent claims 38 and 54 are asserted Compl. ¶¶104, 109
    • Accused Features: The "Super Safety," "ARC-Fire," and "Kabuto" products are alleged to infringe Compl. ¶¶104, 107, 108, 109

III. The Accused Instrumentality

Product Identification

  • The accused instrumentalities are the "Super Safety," "ARC-Fire," and "Kabuto" products Compl. ¶29

Functionality and Market Context

  • The complaint alleges these products are 3-position trigger modification kits sold as either partial or complete sets via the website www.1441recoilsystems.com Compl. ¶31 Compl. ¶35 Compl. ¶39 When installed in a standard AR-pattern firearm, they are alleged to create a trigger system that can operate in multiple modes, including "safe, standard semiautomatic with disconnector, and forced reset semiautomatic" Compl. ¶33 Compl. ¶37 Compl. ¶41 The complaint provides a screenshot from the defendants' website showing various components and kits, some of which are marked as "Sale!" or "OUT OF STOCK" 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... The accused Super Safety is installed with a standard hammer (red) that has a sear catch and a hook for engaging a disconnector (orange). ¶45, p. 14 col. 7:45-47
a trigger member having a sear... The Super Safety is installed with a trigger member (brown) that has a sear. ¶45, p. 15 col. 7:50-53
a cam having a cam lobe and adapted to be movably mounted in the fire control mechanism pocket, The accused Super Safety has a cam (yellow) with a cam lobe and lever, adapted to be movably mounted in the fire control pocket. A Plaintiff-generated rendering shows the cam component in isolation (Compl. p. 17). ¶45, p. 17 col. 8:5-14
whereupon in a standard semi-automatic mode, ...said disconnector hook catches said hammer hook, at which time a user must manually release said trigger member... In standard mode, rearward movement of the bolt carrier causes the disconnector (orange) to catch the hammer hook (red), requiring the user to manually release the trigger to fire again. ¶45, pp. 19-20 col. 9:1-29
whereupon in a forced reset semi-automatic mode, said cam is in said second position, rearward movement of the bolt carrier causes...said disconnector hook is prevented from catching said hammer hook, In forced reset mode, the cam (yellow) is in its second position, and rearward bolt movement causes the disconnector hook (orange) to be prevented from catching the hammer hook (red). ¶45, p. 21 col. 9:30-47
at which time the user can pull said trigger member to fire the firearm. Once the bolt carrier returns to battery, the user can pull the trigger (brown) to fire the firearm without first having to manually release it. ¶45, p. 22 col. 9:59-63

'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... The accused ARC-Fire is alleged to be part of a forced reset trigger mechanism and functions as a locking device that can lock the trigger member. ¶62, p. 44 col. 5:11-20
...and a second position where it does not restrict movement of the trigger member, The ARC-Fire is movable to a second, unlocked position where it does not restrict trigger movement. A plaintiff-generated rendering depicts the locked and unlocked positions (Compl. p. 45). ¶62, p. 45 col. 5:18-20
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 ARC-Fire is alleged to have a body portion (blue) and a separately movable, upwardly extending deflectable portion, or lever arm (yellow/red/green). ¶62, p. 50 col. 2:60-65
...between an extended position and a deflected position. The ARC-Fire's lever arm is shown moving between an extended position and a deflected position, independent of the body portion. The complaint includes a diagram overlaying the two positions to illustrate the separate travel (Compl. p. 50). ¶62, p. 51 col. 4:1-9
  • Identified Points of Contention:
    • Scope Questions: For the '247 Patent, a central question may be whether the accused products, when installed by a consumer, create a "firearm trigger mechanism" that meets every limitation of claim 15. The infringement theory relies on the combination of the defendants' kit with a standard firearm. For the '784 Patent, the analysis will likely focus on whether the accused ARC-Fire's lever mechanism constitutes an "upwardly extending deflectable portion that is separately movable relative to the body portion" as that phrase is construed in light of the patent's specification.
    • Technical Questions: A key technical question for the '247 Patent will be the precise interaction in the "forced reset" mode. Does the accused cam's action functionally prevent the disconnector hook from catching the hammer hook, as required by the claim Compl. p. 21? For the '784 Patent, the factual evidence will need to establish that the accused lever arm truly pivots or deflects independently of the main body to avoid interference with the bolt carrier's rearward movement, as depicted in the complaint's diagrams Compl. pp. 50-51

V. Key Claim Terms for Construction

  • Term 1: "forces said trigger member towards said set position" ('247 Patent, claim 15)
    • Context and Importance: This term is at the core of the "forced reset" concept. The definition of "forces" will be critical to determining infringement. Practitioners may focus on this term because the dispute could turn on whether the cam's action provides mere assistance or a complete, overpowering mechanical action that resets the trigger regardless of user finger pressure.
    • Intrinsic Evidence for Interpretation:
      • Evidence for a Broader Interpretation: The specification describes the cam lobe "acts upon the cam follower... to pivot the trigger member," which could suggest a more general interaction rather than an absolute, irresistible force '247 Patent, col. 9:16-20
      • Evidence for a Narrower Interpretation: The claim itself, the abstract, and the summary of invention consistently use the word "forces" '247 Patent, abstract '247 Patent, col. 2:60-61, which may support an interpretation requiring a definitive, non-optional mechanical reset.
  • Term 2: "separately movable relative to the body portion" ('784 Patent, claim 1)
    • Context and Importance: This term distinguishes the invention from prior art rigid locking bars. The case may hinge on the required degree of independence between the "deflectable portion" and the "body portion."
    • Intrinsic Evidence for Interpretation:
      • Evidence for a Broader Interpretation: The specification describes the feature as a "one-way hinge feature" that can "deflect or fold" '784 Patent, col. 2:7; col. 2:66, suggesting that any form of independent flexion or pivoting could meet the limitation.
      • Evidence for a Narrower Interpretation: The patent's embodiments explicitly show a distinct mechanical pivot created by a separate pin (e.g., pin 24 in Fig. 2; pin 54 in Fig. 8), which could support an argument that "separately movable" requires a discrete, hinged connection rather than mere material flexibility.

VI. Other Allegations

  • Indirect Infringement: The complaint alleges both induced and contributory infringement. Inducement is based on allegations that Defendants encourage and instruct customers on how to install and use the infringing products Compl. ¶48 Compl. ¶63 Contributory infringement is based on allegations that the components sold are "specially designed and adapted to be used" for infringement and are "not suitable for substantial noninfringing use" Compl. ¶50 Compl. ¶65
  • Willful Infringement: The complaint alleges that Defendants' infringement is willful, asserting that they "have known or should have known that their actions constituted" infringement, at least from the time of the complaint's service Compl. ¶51 Compl. ¶66 The allegations support a claim for both pre- and post-suit willfulness.

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

  1. Functional Equivalence and Operation: A primary issue will be one of technical operation: Do the accused products, when installed, replicate the precise sequence of mechanical functions described in the claims? For the '247 and '159 patents, this includes not only forcing the trigger to reset but also simultaneously preventing the disconnector from catching the hammer in the forced-reset mode. The case will depend on evidence demonstrating how the components interact during the firearm's high-speed cycle.
  2. Structural Interpretation and Compatibility: A key question for the '784 patent is one of structural scope: Can the term "separately movable," used to describe the deflectable extension of the trigger lock, be read to cover the specific design of the accused ARC-Fire? The resolution will depend on how the court construes this term in light of the patent's specification, which describes a mechanism to solve a cross-platform compatibility problem.
  3. Mode Selection and Infringement: For the '538 and '403 patents, the analysis will turn on a structural and functional mapping: Do the accused products' multi-position selectors possess the specific recesses, detents, and protuberances that interact with the trigger and disconnector in the exact manner claimed to create the distinct "safe," "standard," and "forced reset" modes?
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