ABC IP LLC v. Dunedin Holding LLC

I. Executive Summary and Procedural Information

• Parties & Counsel:
  • Plaintiff: ABC IP, LLC (Delaware) and Rare Breed Triggers, Inc. (Texas)
  • Defendant: Dunedin Holding, LLC (Florida)
  • Plaintiff's Counsel: Wood Herron & Evans LLP
• Case Identification: ABC IP, LLC v. Dunedin Holding, LLC, 8:26-cv-01627, M.D. Fla., 06/01/2026
• Venue Allegations: Plaintiff alleges venue is proper as Defendant resides in the district, has a regular and established place of business there, and has committed alleged acts of infringement within the district.
• Core Dispute: Plaintiffs allege that Defendant's "Super Safety" aftermarket firearm components infringe five patents related to forced reset trigger mechanisms.
• Technical Context: The technology concerns firearm trigger mechanisms that use the energy from a firearm's cycling action to mechanically reset the trigger, enabling a significantly faster rate of semi-automatic fire than is possible with standard trigger designs.
• Key Procedural History: Plaintiff ABC IP, LLC is the owner of the asserted patents, and Plaintiff Rare Breed Triggers, Inc. is the exclusive licensee. The complaint does not specify any prior litigation or administrative proceedings involving the asserted patents.

Case Timeline

Date	Event
2021-11-05	Priority Date for U.S. Patent No. 12,031,784
2022-01-10	Priority Date for U.S. Patent No. 12,636,403
2022-09-08	Priority Date for U.S. Patent No. 12,038,247
2022-09-08	Priority Date for U.S. Patent No. 12,578,159
2023-12-04	Priority Date for U.S. Patent No. 12,529,538
2024-07-09	U.S. Patent No. 12,031,784 Issued
2024-07-16	U.S. Patent No. 12,038,247 Issued
2026-01-20	U.S. Patent No. 12,529,538 Issued
2026-03-17	U.S. Patent No. 12,578,159 Issued
2026-05-26	U.S. Patent No. 12,636,403 Issued
2026-06-01	Complaint Filed

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

U.S. Patent No. 12,038,247 - Firearm Trigger Mechanism

• Patent Identification: U.S. Patent No. 12,038,247, "Firearm Trigger Mechanism," issued July 16, 2024.

The Invention Explained

• Problem Addressed: The patent describes that in a standard semi-automatic firearm, the rate of fire is limited by the need for the user to manually release the trigger to reset the firing mechanism after each shot Compl. ¶19 '247 Patent, col. 1:28-39
• The Patented Solution: The invention is a trigger mechanism with selectable modes: a "standard semi-automatic" mode and a "forced reset semi-automatic" mode. In the forced reset mode, the rearward movement of the firearm's bolt carrier actuates a cam, which in turn physically forces the trigger back to its reset position. A safety selector simultaneously prevents the disconnector from catching the hammer, allowing the user to fire again immediately upon the bolt's return to battery without first releasing the trigger Compl. ¶21 '247 Patent, abstract '247 Patent, col. 2:55-col. 3:11
• Technical Importance: This design offers a "drop-in" modular solution that allows a user to achieve a significantly accelerated rate of fire from a standard semi-automatic firearm by automating the trigger reset process Compl. ¶21

Key Claims at a Glance

• The complaint asserts infringement of at least Claim 15 Compl. ¶32
• The essential elements of independent claim 15 include:
  • A firearm trigger mechanism comprising a hammer, a trigger member, a disconnector, and a cam.
  • The mechanism is operable in a "standard semi-automatic mode" where the disconnector catches the hammer after firing, requiring the user to manually release the trigger to reset.
  • The mechanism is also operable in a "forced reset semi-automatic mode" where the cam forces the trigger member towards its set position, and the disconnector hook is prevented from catching the hammer, allowing for immediate subsequent firing.
• The complaint does not explicitly reserve the right to assert dependent claims but references "one or more claims" Compl. ¶32

U.S. Patent No. 12,031,784 - Adapted Forced Reset Trigger

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

The Invention Explained

• Problem Addressed: The patent notes that forced reset trigger locking mechanisms designed for one firearm platform (e.g., an AR-15) may not function in a different platform (e.g., an AR-10) due to dimensional variations. An extended locking member might be needed to be actuated by the bolt carrier but could then interfere with the bolt carrier's movement during its cycle '784 Patent, col. 1:20-44
• The Patented Solution: The patent discloses a locking member with an "upwardly extending deflectable portion that is separately movable relative to the body portion" '784 Patent, abstract This design allows the extension to be long enough to be properly actuated by the bolt carrier upon its return to battery, but also to "deflect or fold" out of the way to avoid interfering with the bolt carrier as it cycles rearward Compl. ¶22 '784 Patent, col. 2:5-11 Figure 7 of the patent illustrates this folding capability.
• Technical Importance: This innovation provides an adaptable design for forced reset triggers, allowing a single mechanism to be compatible with multiple firearm platforms that have different internal geometries and dimensional standards Compl. ¶22

Key Claims at a Glance

• The complaint asserts infringement of at least Claim 1 Compl. ¶46
• The essential elements of independent claim 1 include:
  • An extended trigger member locking device for a forced reset trigger mechanism.
  • The device includes a locking member movable between a locking 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.
• The complaint does not explicitly reserve the right to assert dependent claims but references "one or more claims" Compl. ¶46

U.S. Patent No. 12,529,538 - Safety Mechanism for Firearm

• Patent Identification: U.S. Patent No. 12,529,538, "Safety Mechanism for Firearm," issued January 20, 2026.
• Technology Synopsis: The patent discloses a safety mechanism using a multi-mode cam selector that interacts with a trigger tail. The selector's rotation determines the operational mode by aligning different recesses with the trigger tail, enabling standard semi-automatic, active (forced) reset, and safe functions Compl. ¶23 '538 Patent, abstract This provides a single component solution for multi-mode fire control.
• Asserted Claims: Claim 1 Compl. ¶60
• Accused Features: The complaint alleges the "Super Safety" includes a cam selector with multiple recesses that provide three modes of operation by interacting with the trigger, as claimed Compl. ¶62, p. 35

U.S. Patent No. 12,578,159 - Firearm Trigger Mechanism

• Patent Identification: U.S. Patent No. 12,578,159, "Firearm Trigger Mechanism," issued March 17, 2026.
• Technology Synopsis: This patent, similar 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 the firearm's reciprocating bolt to actuate a cam that forces the trigger to reset, enabling an accelerated rate of fire Compl. ¶21 '159 Patent, abstract
• Asserted Claims: Claim 1 Compl. ¶74
• Accused Features: The "Super Safety" product is alleged to operate in both a standard and a forced reset mode, thereby embodying the claimed invention Compl. ¶76, p. 42

U.S. Patent No. 12,636,403 - Firearm Trigger Mechanism

• Patent Identification: U.S. Patent No. 12,636,403, "Firearm Trigger Mechanism," issued May 26, 2026.
• Technology Synopsis: The patent claims a forced reset trigger mechanism featuring a safety selector movable between a standard semi-automatic position and a forced reset position. The selector's position dictates whether the user must manually reduce trigger pressure to fire again (standard mode) or if the mechanism resets automatically for immediate subsequent firing (forced reset mode) Compl. ¶24 '403 Patent, abstract
• Asserted Claims: Claim 38 Compl. ¶88
• Accused Features: The "Super Safety" is alleged to have a movable safety selector that allows the user to switch between a standard "disconnector mode" and a "forced reset semiautomatic" mode Compl. ¶30 Compl. ¶57

III. The Accused Instrumentality

Product Identification

The accused product is the "(3-Position) Super Safety" Compl. ¶27

Functionality and Market Context

The "Super Safety" is an aftermarket fire control component sold for AR-pattern firearms via the website "mid-tierdefense.com" Compl. ¶28 It is offered as a "partial kit," a "complete kit," or pre-installed in a receiver or complete firearm Compl. ¶28 Functionally, the device replaces a standard safety selector and allegedly modifies the firearm's trigger group to operate in three modes: (1) safe, (2) standard semi-automatic, and (3) forced reset semi-automatic Compl. ¶30 The complaint alleges that in the forced reset mode, a cam mechanism forces the trigger to reset, enabling a higher rate of fire Compl. ¶30 The complaint includes a photograph of the accused product's main selector component Compl. ¶29, p. 7

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 Super Safety is installed with a hammer (red) that has a sear catch and a hook for engaging a disconnector (orange). The complaint provides a plaintiff-generated rendering showing these components. Compl. ¶34, p. 10	¶34	col. 7:51-54
...a disconnector having a hook for engaging said hammer...	The disconnector (orange) is shown with a hook adapted to engage the hammer (red).	¶34	col. 8:11-15
...and a cam having a cam lobe and adapted to be movably mounted...movable between a first position and a second position, in said second position said cam lobe forces said trigger member towards said set position,	The Super Safety allegedly has a cam with a cam lobe (yellow) that is movable. In the forced reset mode (second position), the cam lobe allegedly forces the trigger member (brown) toward its set position.	¶34	col. 8:16-27
whereupon in a standard semi-automatic mode, ...said cam is in said first position, rearward movement of the bolt carrier causes rearward pivoting of said hammer such that said disconnector hook catches said hammer hook, ...a user must manually release said trigger member...	In standard mode, the disconnector hook allegedly catches the hammer hook upon rearward bolt carrier movement, requiring the user to manually release the trigger to reset the mechanism and fire again.	¶34	col. 8:59-col. 9:27
whereupon in a forced reset semi-automatic mode, said cam is in said second position, rearward movement of the bolt carrier causes rearward pivoting of said hammer such that said disconnector hook is prevented from catching said hammer hook, ...at which time the user can pull said trigger member to fire the firearm.	In forced reset mode, the cam is allegedly in its second position, forcing the trigger to reset while the disconnector hook is prevented from catching the hammer, allowing the user to fire again without manual release. A plaintiff-generated rendering illustrates the alleged disconnector being prevented from catching the hammer hook. Compl. ¶34, p. 17	¶34	col. 9:28-60

Identified Points of Contention

• Technical Question: A central factual dispute may be whether the accused "Super Safety" operates as depicted in the complaint's plaintiff-generated renderings Compl. ¶34, pp. 10-18 The allegation that the disconnector hook is "prevented from catching said hammer hook" in forced reset mode is a critical limitation. The evidence for this is currently based on diagrams rather than empirical testing or source code, raising the question of whether the actual product's function matches the claimed function.
• Scope Question: The claim requires a specific sequence of events involving the cam, trigger, and disconnector, all dictated by the position of a safety selector. The court will need to determine if the accused product's multi-part interaction falls within the scope of the claim's "whereupon" clauses, which define the two distinct operational modes.

'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 is alleged to operate as a locking member, with a locked first position and an unlocked second position. Plaintiff-generated renderings depict these two states. Compl. ¶48, p. 23	¶48	col. 5:12-19
...the locking member configured to be movably supported by a frame and including a generally upward extension portion configured to make actuating contact with a surface of a bolt carrier...	The Super Safety is allegedly supported by the firearm's lower receiver (frame) and has an upward extending lever arm that makes contact with the bolt carrier. A diagram shows the upward extension. Compl. ¶48, p. 24	¶48	col. 5:19-23
...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 between an extended position and a deflected position.	The complaint alleges that the '784 patent's invention allows a locking member to "deflect or fold separately" Compl. ¶22 However, the claim chart for the '784 patent does not explicitly identify or map this "separately movable deflectable portion" in the accused Super Safety.	¶22	col. 5:2-11

Identified Points of Contention

• Technical Question: The infringement allegation for the '784 patent may turn on whether the accused "Super Safety" contains the "upwardly extending deflectable portion that is separately movable relative to the body portion," which is the core inventive concept of the patent. The complaint's claim chart Compl. ¶48 conspicuously fails to map this specific element to a feature of the accused device, raising a significant question about the evidentiary basis for this count of infringement.
• Scope Question: If the accused device has a mechanism that yields to the bolt carrier, a key question for claim construction will be the scope of "separately movable." The patent's specification shows distinct hinged components '784 Patent, Figs. 2, 8 The court may need to decide if this language can read on, for example, a component made of a flexible material that bends, or if it is limited to a multi-part, hinged assembly.

V. Key Claim Terms for Construction

For the '247 Patent

• The Term: "cam"
• Context and Importance: The "cam" is the central component that allegedly forces the trigger to reset. Its definition is critical, as the infringement case depends on the accused product's selector component being properly characterized as a "cam" that performs the functions recited in the claim. Practitioners may focus on this term to dispute whether the accused part's structure and function align with the patent's disclosure.
• Intrinsic Evidence for Interpretation:
  • Evidence for a Broader Interpretation: The claims describe the cam functionally as having a "cam lobe" and being "pivotable" to "force said trigger member towards said set position" '247 Patent, claim 14 This suggests any component that performs this pivoting and forcing function could be a "cam."
  • Evidence for a Narrower Interpretation: The specification illustrates a specific embodiment of the cam (72) with distinct features, including a first contact surface (82), a second contact surface (84), and a clearance notch (86) '247 Patent, Fig. 3 '247 Patent, col. 8:35-42 An argument could be made that the term "cam" is implicitly limited to a structure possessing these disclosed characteristics.

For the '784 Patent

• The Term: "upwardly extending deflectable portion that is separately movable relative to the body portion"
• Context and Importance: This term defines the primary novel feature of the '784 patent, intended to solve the problem of platform compatibility. Infringement of Claim 1 hinges entirely on whether the accused device possesses a structure meeting this definition. As noted, the complaint's own infringement chart is silent on this feature.
• Intrinsic Evidence for Interpretation:
  • Evidence for a Broader Interpretation: The summary of the invention describes the function as allowing the extension to "give way (i.e., deflect or fold)" to avoid interference '784 Patent, col. 2:7-8 This functional language may support an interpretation covering any component that yields to the bolt carrier, regardless of its specific mechanical implementation.
  • Evidence for a Narrower Interpretation: The patent's detailed description and figures show two distinct embodiments, both of which depict the deflectable portion as a discrete, physically separate part connected to the main body via a pivot pin or hinge '784 Patent, Figs. 2-4 '784 Patent, Figs. 8-10 This could support a narrower construction requiring a multi-part, hinged assembly, rather than a single, flexible piece of material.

VI. Other Allegations

Indirect Infringement

The complaint alleges both induced and contributory infringement for all five patents. The inducement theory is based on Defendant allegedly encouraging and instructing customers on how to install and use the "Super Safety" products to directly infringe (Compl. ¶¶35; Compl. ¶49; Compl. ¶63; Compl. ¶77; Compl. ¶91). The contributory infringement theory alleges that the "Super Safety" components are not suitable for substantial noninfringing use, as they are "specially designed" to be used in an infringing manner (Compl. ¶¶37; Compl. ¶51; Compl. ¶65; Compl. ¶79; Compl. ¶93).

Willful Infringement

The complaint includes allegations of willful infringement for all asserted patents, stating on "information and belief" that Defendant "has known or should have known" its actions constituted infringement (Compl. ¶¶38; Compl. ¶52; Compl. ¶66; Compl. ¶80; Compl. ¶94). The complaint does not provide specific facts supporting pre-suit knowledge, such as a notice letter or prior litigation.

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

1. An Evidentiary Question of Technical Fact: Does the accused "Super Safety" product physically operate as depicted in the plaintiff-generated renderings? Specifically, for the '784 patent, does the device contain a "separately movable deflectable portion" as claimed, a feature the complaint's own claim chart for that patent fails to identify? The resolution of the case may depend heavily on a factual comparison between the patent claims and the actual construction and operation of the accused device.

2. A Legal Question of Claim Scope: The case will likely involve significant disputes over claim construction. A core issue will be whether the term "cam" in the '247 patent is defined by its function or limited to the specific structure disclosed. Similarly, for the '784 patent, the scope of a "separately movable" portion will be critical-does it require a distinct hinged component as shown in the patent's figures, or can it cover any component that flexes or yields?

3. A Strategic Question of Patent Validity: Plaintiffs have asserted five patents with substantial overlap in their disclosed technology, all relating to selectable, forced-reset trigger mechanisms. This raises the question of whether the claims of the later-issued patents are patentably distinct from those of the earlier ones. The case may feature a validity challenge based on obviousness-type double patenting, forcing a judicial examination of the incremental contributions of each patent in the asserted family.