ABC IP LLC v. Mars Trigger LLC

I. Executive Summary and Procedural Information

• Parties & Counsel:
  • Plaintiff: ABC IP, LLC (Delaware) and Rare Breed Triggers, Inc. (Texas)
  • Defendant: MaRs Trigger, LLC (Texas) and Peter Brennen (individual)
  • Plaintiff's Counsel: Fish & Richardson P.C.; Wood Herron & Evans LLP
• Case Identification: 2:26-cv-00030, E.D. Tex., 03/23/2026
• Venue Allegations: Venue is asserted on the basis that Defendants reside in the district, have committed acts of infringement in the district, and have a regular and established place of business in the district.
• Core Dispute: Plaintiffs allege that Defendants' "Super Safety" firearm trigger mechanism infringes four patents related to forced reset triggers and associated safety systems.
• Technical Context: The technology at issue involves "forced reset triggers" for AR-pattern semiautomatic firearms, which use the energy from the reciprocating bolt carrier to mechanically reset the trigger, enabling a faster potential rate of fire compared to standard mechanisms.
• Key Procedural History: The complaint alleges that in March 2025, Defendant Peter Brennen was put on notice of infringement of at least two of the asserted patents during a conference call, a fact that may be central to Plaintiffs' claims of willful infringement.

Case Timeline

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

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

The Invention Explained

• Problem Addressed: The patent addresses the operational speed limit of standard semiautomatic firearms, where the rate of fire is constrained by the time it takes for a user to manually release the trigger, allowing the disconnector to release the hammer and the sear to reset Compl. ¶¶19-20 '247 Patent, col. 1:19-41
• The Patented Solution: The invention is a trigger mechanism, often in a "drop-in" module, that includes a cam actuated by the firearm's reciprocating bolt carrier Compl. ¶22 This cam physically forces the trigger member back to its reset position, bypassing the need for the user to manually release it Compl. ¶22 The system includes a three-position safety selector, allowing the user to choose between "safe," "standard semi-automatic," and "forced reset semi-automatic" modes of operation '247 Patent, abstract '247 Patent, col. 2:26-30
• Technical Importance: This approach provides a way to significantly increase the potential rate of fire for common firearm platforms like the AR-15 using a self-contained, selectable mechanism Compl. ¶22 '247 Patent, col. 2:18-24

Key Claims at a Glance

• The complaint asserts independent claim 15 Compl. ¶31
• Essential elements of claim 15 include:
  • A hammer with a sear catch and a hook for engaging a disconnector.
  • A trigger member with a sear.
  • A disconnector with a hook for engaging the hammer.
  • A cam with a cam lobe, pivotable between a first and second position, where in the second position the cam lobe forces the trigger member toward its set position.
  • A safety selector for choosing between safe, standard semi-automatic, and forced reset modes.
  • Operation in a "standard semi-automatic" mode where the disconnector catches the hammer, requiring manual trigger release to fire again.
  • Operation in a "forced reset semi-automatic" mode where the safety selector prevents the disconnector from catching the hammer, allowing the user to fire again without manual release.
• The complaint does not explicitly reserve the right to assert dependent claims for this patent.

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

The Invention Explained

• Problem Addressed: The patent describes a problem when adapting forced reset triggers designed for one firearm platform (e.g., an AR-15) to another with different dimensions (e.g., an AR-10) '784 Patent, col. 1:20-32 A locking member tall enough to be actuated by the AR-10's bolt carrier might interfere with a different part of that same bolt carrier as it cycles rearward, rendering the device inoperable '784 Patent, col. 1:36-44
• The Patented Solution: The invention is a trigger locking device with a "deflectable" or "one-way hinge" extension '784 Patent, col. 2:46-52 '784 Patent, col. 2:66-67 This upward extension is rigid when pushed from the rear by the bolt carrier moving into battery, allowing it to unlock the trigger. However, when contacted from the front by the bolt carrier cycling to the rear, the extension folds or deflects out of the way, preventing interference '784 Patent, col. 3:52-62 '784 Patent, Fig. 7
• Technical Importance: This design allows a forced reset trigger mechanism to be made compatible across different firearm platforms that have varying internal geometries and bolt carrier profiles '784 Patent, abstract

Key Claims at a Glance

• The complaint asserts independent claim 1 Compl. ¶43
• Essential elements of claim 1 include:
  • An extended trigger member locking device for a forced reset trigger mechanism.
  • A locking member movable between a first (locked) and second (unlocked) position.
  • The locking member includes a "movably supported" body portion.
  • The locking member also includes an "upwardly extending deflectable portion" that is "separately movable relative to the body portion" between an extended and a deflected position.
• The complaint does not explicitly reserve the right to assert dependent claims for this patent.

U.S. Patent No. 12,529,538 - Safety Mechanism for Firearm, Issued January 20, 2026 ('538 Patent)

• Technology Synopsis: This patent discloses a safety mechanism centered on a rotatable, multi-profile cam selector. The selector has two recesses on its bottom side which interact with a tail portion of the trigger Compl. ¶24 '538 Patent, abstract Based on the selector's rotational position, it can permit standard semi-automatic operation (trigger tail in first recess), enable an "active reset" mode where a cam surface in the second recess actively pushes the trigger tail down, or engage a safe mode that blocks the trigger from being pulled '538 Patent, col. 1:43-51
• Asserted Claims: Claim 1 Compl. ¶55
• Accused Features: The complaint alleges that the "Super Safety" device embodies the claimed safety mechanism, including its cam selector with multiple recesses configured to operate in first (standard), second (active reset), and third (safe) modes Compl. ¶57

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

• Technology Synopsis: This patent, related to the '247 Patent, describes a firearm trigger mechanism operable in both a standard semi-automatic mode and a forced reset semi-automatic mode Compl. ¶22 The claims detail the mechanical interplay between a hammer, trigger, disconnector, and a cam that is actuated by the firearm's reciprocating bolt means '159 Patent, abstract The distinction between the modes hinges on whether the disconnector is permitted to catch the hammer during the cycle of operation '159 Patent, col. 14, claim 1
• Asserted Claims: Claim 1 Compl. ¶67
• Accused Features: The complaint alleges that the "Super Safety" device is a trigger mechanism that operates in the two claimed modes, using a cam and disconnector in the manner described by the patent Compl. ¶69

III. The Accused Instrumentality

Product Identification

• The accused product is the "MaRs 3 Position AR FRT Super Safety" (the "Infringing Device") Compl. ¶26 Compl. ¶28

Functionality and Market Context

• The Infringing Device is a trigger and safety selector mechanism for AR-pattern firearms Compl. ¶27 It is marketed as a "3-Position Selector" that allows the user to switch between "Safety, Semi-Auto, and Forced Reset" modes Compl. ¶28 A screenshot from the defendant's website describes its "Forced Reset Mechanism" as achieving "rapid firing speeds with precise control" Compl. ¶28 The complaint alleges the device can operate in a standard "disconnector mode" as well as a "forced reset semiautomatic with cam" mode, selected by moving a safety lever Compl. ¶29
• The device is sold in several configurations: as a "partial kit," a "complete kit," or pre-installed in a firearm receiver or complete firearm Compl. ¶27 The complaint includes a photograph of the accused product's components Compl. ¶45, p. 21

IV. Analysis of Infringement Allegations

'247 Patent Infringement Allegations

Identified Points of Contention

• Scope Questions: The dispute may center on whether the accused device's "Semi-Auto" mode is equivalent to the "standard semi-automatic mode" as defined in the claim. This claimed mode requires a specific sequence where the disconnector catches the hammer and the user must manually release the trigger. The defense could argue its mechanism functions differently.
• Technical Questions: What evidence does the complaint provide that the accused device's safety selector performs the specific function of "preventing" the disconnector from catching the hammer hook, as required by the "forced reset" mode limitation? The complaint illustrates this with a series of plaintiff-generated diagrams showing the interaction of the parts Compl. ¶33, p. 17

'784 Patent Infringement Allegations

Identified Points of Contention

• Scope Questions: A primary issue will be the construction of "separately movable." Does this term require a distinct hinge or pivot, as shown in the patent's figures, or can it encompass the type of engineered tolerance or play allegedly provided by the accused device's "dovetail joint"? Compl. ¶45, p. 26
• Technical Questions: Does the accused device's lever arm actually "deflect" or merely pivot within a joint? The complaint cites a "Super Safety Guide" stating the "dovetail joint does not immediately transfer torque from the lever to the cam," which suggests a designed, separate movement that may support the plaintiff's infringement theory (Compl. ¶45, p. 26-27).

V. Key Claim Terms for Construction

For the '247 Patent

• The Term: "standard semi-automatic mode"
• Context and Importance: This term defines one of the two essential functionalities of the claimed three-position device. Infringement requires the accused device to be capable of operating in this specific mode. Practitioners may focus on this term because the defense could argue that the accused device, even in its "Semi-Auto" setting, does not replicate the precise function of a "standard" AR-15 disconnector/sear reset sequence.
• Intrinsic Evidence for Interpretation:
  • Evidence for a Broader Interpretation: The claim itself provides a functional definition: the disconnector hook catches the hammer hook, and a user "must manually release said trigger member to free said hammer" to permit firing again '247 Patent, col. 10:54-65 This language focuses on the result, not the specific structure that achieves it.
  • Evidence for a Narrower Interpretation: The specification repeatedly describes and illustrates this mode in the context of the specific geometry of the safety selector (110) and its flat portion (114) interacting with the disconnector (60) '247 Patent, col. 8:51-55 '247 Patent, Figs. 8A-8D A defendant may argue that the term is implicitly limited to this disclosed embodiment.

For the '784 Patent

• The Term: "separately movable relative to the body portion"
• Context and Importance: This phrase captures the novel aspect of the invention-the one-way action of the locking member's extension. The infringement reading for this patent depends entirely on whether the accused device's lever arm meets this definition.
• Intrinsic Evidence for Interpretation:
  • Evidence for a Broader Interpretation: The summary of the invention describes the extension portion as able to "deflects or folds" '784 Patent, col. 2:48-49 The detailed description states the extension pivots "relative to the locking bar body" '784 Patent, col. 3:42-43 This language could support a construction that covers any movement independent of the main body that achieves the goal of avoiding interference.
  • Evidence for a Narrower Interpretation: The patent's embodiments both depict a distinct physical pivot point for the separate movement (pivot pin 24 in Fig. 2; pivot axis 54 in Fig. 8). A defendant may argue that "separately movable" requires such a discrete, hinged structure, rather than movement within the tolerances of a different type of joint, such as the accused dovetail.

VI. Other Allegations

• Indirect Infringement: The complaint alleges both induced and contributory infringement. Inducement is based on allegations that Defendants encourage infringement through advertising, their website, and instructional materials, including an installation video on YouTube Compl. ¶34 Compl. ¶46 Compl. ¶70 A screenshot shows an "AR 15 SUPER SAFETY INSTALL" video available on the Defendants' website Compl. ¶34, p. 19 Contributory infringement is based on allegations that the components of the Infringing Device are specially designed for use in an infringing manner and are not suitable for substantial non-infringing use Compl. ¶36 Compl. ¶48 Compl. ¶72
• Willful Infringement: Plaintiffs allege willful infringement based on Defendants' purported knowledge of the patents Compl. ¶37 Compl. ¶49 The complaint specifically alleges that Defendant Peter Brennen was made aware that sales of the Infringing Device constituted infringement during a conference call in or around March 2025, prior to the filing of the suit Compl. ¶35 Compl. ¶47

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

• A core issue will be one of functional equivalence: Does the accused "Super Safety" device, when set to its "Semi-Auto" mode, perform the specific, multi-step mechanical sequence of a "standard semi-automatic mode" as required by the '247 and '159 patents, or is there a fundamental mismatch in its technical operation?
• The dispute over the '784 patent will likely center on a question of definitional scope: Can the term "separately movable... deflectable portion," which is depicted in the patent as a hinged structure, be construed to cover the alleged independent movement within the "dovetail joint" of the accused device's lever arm?
• A key evidentiary question for willfulness will be the effect of pre-suit notice: Plaintiffs will need to establish what was communicated during the alleged March 2025 conference call and whether that communication was sufficient to establish that any subsequent infringement by the Defendants was knowing and deliberate.