ABC IP LLC v. SGC LLC

I. Executive Summary and Procedural Information

• Parties & Counsel:
  • Plaintiff: ABC IP, LLC (Delaware) and Rare Breed Triggers, Inc. (Texas)
  • Defendant: SGC, LLC, d/b/a Scottsdale Gun Club (Arizona); TERENCE D SCHMIDT (individual); and Ronald Kennedy (individual)
  • Plaintiff's Counsel: Fish & Richardson P.C.
• Case Identification: 2:26-cv-00085, D. Ariz., 05/26/2026
• Venue Allegations: Venue is alleged to be proper as Defendants reside in the district, have a regular and established place of business in the district, and have allegedly committed acts of infringement there.
• Core Dispute: Plaintiffs allege that Defendants' "Disruptor" trigger assembly for AR-pattern firearms infringes five patents related to "forced reset" trigger mechanisms that enable an increased rate of semi-automatic fire.
• Technical Context: The technology concerns firearm trigger control groups that use the energy from a firearm's cycling action to mechanically reset the trigger, obviating the need for the user to manually release and reset the trigger between shots.
• Key Procedural History: This filing is a Second Amended Complaint. Plaintiffs allege that the website of the purported manufacturer of the accused product contains a "Legal Library" with links to several of the patents-in-suit, a fact that may be central to allegations of willful infringement.

Case Timeline

Date	Event
2017-09-29	'223 Patent Priority Date
2019-12-24	'223 Patent Issue Date
2022-01-10	'003, '336, '807, and '403 Patents Priority Date
2023-08-15	'003 Patent Issue Date
2024-07-16	'336 Patent Issue Date
2025-04-15	'807 Patent Issue Date
2026-05-26	'403 Patent Issue Date
2026-05-26	Complaint Filing Date

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

U.S. Patent No. 10,514,223 - Firearm Trigger Mechanism (Issued Dec. 24, 2019)

The Invention Explained

• Problem Addressed: Standard semi-automatic trigger mechanisms require a user to release the trigger to reset the sear, which limits the rate of fire Compl. ¶¶21-22 The patent background notes that this prevents the firearm from firing multiple rounds on a single pull and from "hammer follow," where the hammer follows the bolt carrier forward without firing a round ʼ223 Patent, col. 1:33-39
• The Patented Solution: The invention is a "forced reset" trigger mechanism that eliminates the need for a traditional disconnector Compl. ¶23 As the bolt carrier cycles to the rear, the hammer is forced to pivot, and a surface on the hammer makes contact with the trigger member, mechanically forcing the trigger back to its "set" position ʼ223 Patent, col. 5:25-45 A separate, spring-biased locking bar blocks the trigger from being pulled again until the bolt carrier has returned to a "substantially in-battery position," at which point the carrier moves the locking bar, allowing the firearm to be fired again ʼ223 Patent, col. 5:55-col. 6:11
• Technical Importance: This design allows for a significantly increased rate of semi-automatic fire by using the firearm's own action to reset the trigger, bypassing the manual user reset step required by conventional designs ʼ223 Patent, col. 1:40-42

Key Claims at a Glance

• The complaint asserts independent Claim 4 Compl. ¶37
• The essential elements of Claim 4 include:
  • A housing with openings for hammer and trigger pins.
  • A hammer with a sear notch, mounted to pivot.
  • A trigger member with a sear, mounted to pivot, and having a surface positioned to be contacted by the hammer when cycled, causing the trigger member to be "forced to the set position."
  • A locking bar, pivotally mounted and spring-biased toward a first position where it "mechanically blocks the trigger member from moving to the released position."
  • The locking bar is movable to a second, non-blocking position when contacted by the bolt carrier upon reaching a "substantially in-battery position," allowing the trigger to be moved by an external force.

U.S. Patent No. 11,724,003 - Firearm Trigger Mechanism (Issued Aug. 15, 2023)

The Invention Explained

• Problem Addressed: The complaint notes that the '003 Patent describes a device with similar "forced reset" functionality as the '223 Patent but adds a selectable mode feature Compl. ¶25 The patent background distinguishes itself from prior art that required a modified bolt carrier or lacked selectable modes, suggesting a need for a drop-in, multi-mode solution '003 Patent, col. 1:56-col. 2:16
• The Patented Solution: This invention provides a trigger mechanism with a three-position safety selector that allows the user to choose between: 1) a standard semi-automatic mode using a disconnector, and 2) a "forced reset" semi-automatic mode Compl. ¶25 '003 Patent, abstract In the "forced reset" mode, the safety selector physically prevents the disconnector from catching the hammer, enabling the forced-reset function '003 Patent, col. 10:2-9 In the standard mode, the disconnector functions conventionally '003 Patent, col. 9:35-52
• Technical Importance: The invention provides user-selectable functionality, combining the high rate of fire of a forced-reset trigger with the operational characteristics of a standard semi-automatic trigger in a single, drop-in-compatible unit '003 Patent, col. 2:32-38

Key Claims at a Glance

• The complaint asserts independent Claim 4 Compl. ¶51
• The essential elements of Claim 4 include:
  • A housing, hammer, trigger member, disconnector, and locking member, largely similar to the '223 Patent but with the hammer and disconnector both specified as having hooks.
  • A safety selector adapted to pivot between "safe, standard semi-automatic, and forced reset semi-automatic positions."
  • A "whereupon" clause describing operation in the standard semi-automatic position, where the disconnector hook catches the hammer hook and the user must manually release the trigger.
  • A "whereupon" clause describing operation in the forced reset semi-automatic position, where the hammer forces the trigger to the set position, the safety selector prevents the disconnector hook from catching the hammer hook, and the user can fire again without manually releasing the trigger once the bolt is in battery.

Multi-Patent Capsule: U.S. Patent No. 12,036,336

• Patent Identification: U.S. Patent No. 12,036,336, "Firearm Trigger Mechanism," issued July 16, 2024 Compl. ¶14
• Technology Synopsis: The '336 Patent, a continuation of the application leading to the '003 Patent, describes a similar selectable, dual-mode firearm trigger mechanism. It allows a user to switch between a conventional disconnector-based semi-automatic mode and a "forced reset" mode, where the cycling of the bolt mechanically resets the trigger for a higher rate of fire '336 Patent, abstract
• Asserted Claims: The complaint asserts independent Claim 3 Compl. ¶65
• Accused Features: The complaint alleges that the "Disruptor" product's ability to switch between a standard disconnector mode and a "forced reset" mode infringes the '336 Patent (Compl. ¶31; Compl. ¶32; Compl. ¶33; Compl. ¶34).

Multi-Patent Capsule: U.S. Patent No. 12,274,807

• Patent Identification: U.S. Patent No. 12,274,807, "Firearm Trigger Mechanism," issued April 15, 2025 Compl. ¶15
• Technology Synopsis: The '807 Patent, also in the same family as the '003 and '336 patents, claims a firearm trigger mechanism with a three-position safety selector. This selector enables operation in a standard semi-automatic mode, where a disconnector catches the hammer, or a "forced reset" mode, where the action of the bolt resets the trigger and the disconnector is prevented from engaging '807 Patent, abstract
• Asserted Claims: The complaint asserts independent Claim 1 Compl. ¶79
• Accused Features: The "Disruptor" product is accused of infringing by embodying a trigger assembly with selectable standard and "forced reset" modes controlled by a safety selector (Compl. ¶31; Compl. ¶32; Compl. ¶33; Compl. ¶34).

Multi-Patent Capsule: U.S. Patent No. 12,636,403

• Patent Identification: U.S. Patent No. 12,636,403, "Firearm Trigger Mechanism," issued May 26, 2026 Compl. ¶16
• Technology Synopsis: The '403 Patent, also in the same family, claims a forced reset trigger mechanism with a safety selector for switching between a standard semi-automatic position and a forced reset position. The claims focus on the functional outcomes in each mode, including the requirement to reduce trigger pressure in standard mode versus no such requirement in forced reset mode '403 Patent, claim 38
• Asserted Claims: The complaint asserts independent Claim 38 Compl. ¶¶94-95
• Accused Features: The "Disruptor" is accused of infringement based on its inclusion of a safety selector that allows the user to choose between a standard semi-automatic mode and a "forced reset" mode, matching the functionality described in the patent (Compl. ¶31; Compl. ¶32; Compl. ¶33; Compl. ¶34).

III. The Accused Instrumentality

• Product Identification: The accused product is a trigger assembly for AR-pattern firearms known as the "Disruptor" Compl. ¶27
• Functionality and Market Context: The complaint alleges the Disruptor is sold as a standalone product or pre-installed in a firearm and is marketed through the website scottsdalegunclub.com/shop Compl. ¶¶28-29 The core accused functionality is the device's ability to operate in two distinct, user-selectable modes via a safety selector: a "standard semi-automatic with disconnector" mode and a "'forced reset' semiautomatic" mode Compl. ¶31 In the "forced reset" mode, the cycling of the firearm's action is alleged to cause "hammer contact with the trigger member to mechanically reset the hammer and trigger member" Compl. ¶32 This functionality is alleged to allow a user to fire again "without manually releasing the trigger member" once the bolt carrier is in battery Compl. ¶34 The complaint includes a product page screenshot for the "Partisan Disrupter Forced Reset Trigger (Frt)," describing it as an authorized dealer product Compl. ¶30

IV. Analysis of Infringement Allegations

'223 Patent Infringement Allegations

Claim Element (from Independent Claim 4)	Alleged Infringing Functionality	Complaint Citation	Patent Citation
a housing having transversely aligned pairs of openings for receiving hammer and trigger assembly pins;	The Disruptor includes a housing with transversely aligned pairs of openings for the hammer and trigger assembly pins, as shown in a plaintiff-generated rendering.	¶39	col. 4:11-23
a hammer having a sear notch and mounted in the housing to pivot on a transverse axis between set and released positions;	The Disruptor includes a hammer with a sear notch, shown pivoting between a "Set position" and a "Released position."	¶39	col. 4:24-28
the trigger member having a surface positioned to be contacted by the hammer when the hammer is displaced by the bolt carrier when cycled, the contact causing the trigger member to be forced to the set position;	The Disruptor's trigger member has a surface that is contacted by the hammer during rearward pivot, which mechanically moves the trigger to the set position. The complaint provides a diagram illustrating the contact surfaces on the hammer and trigger. (Compl. ¶39).	¶39	col. 5:32-45
a locking bar pivotally mounted in the housing and spring biased toward a first position in which the locking bar mechanically blocks the trigger member from moving to the released position,	The Disruptor includes a pivotally mounted locking bar that, in a first position, mechanically blocks the trigger from moving to the released position.	¶39	col. 5:3-10
and movable against the spring bias to a second position when contacted by the bolt carrier reaching a substantially in-battery position in which the trigger member can be moved by an external force to the released position.	The locking bar is movable to a second position when contacted by the bolt carrier as it reaches an in-battery position, allowing the trigger to be pulled.	¶39	col. 6:3-11

• Identified Points of Contention:
  • Scope Questions: The '223 Patent claims a mechanism that improves upon prior art by, in part, not needing a disconnector Compl. ¶23 The accused Disruptor, however, is alleged to have a disconnector for its "standard" mode Compl. ¶31 A central dispute may arise over whether a claim that implicitly omits a disconnector can be infringed by a product that includes one, even if it is not used in the accused "forced reset" mode of operation. The defense may argue the presence of the disconnector component places the entire device outside the claim's scope.

'003 Patent Infringement Allegations

Claim Element (from Independent Claim 4)	Alleged Infringing Functionality	Complaint Citation	Patent Citation
a safety selector adapted to be mounted in a fire control mechanism pocket of a receiver to pivot between safe, standard semi-automatic, and forced reset semi-automatic positions,	The Disruptor includes a safety selector that pivots between safe, standard semi-automatic, and "forced reset" positions. The complaint includes a photograph of the selector component. (Compl. ¶53).	¶53	col. 9:11-23
whereupon in said standard semi-automatic position, rearward movement of the bolt carrier causes rearward pivoting of said hammer such that said disconnector hook catches said hammer hook, at which time a user must manually release said trigger member...	In standard semi-automatic mode, rearward movement of the bolt carrier causes the disconnector hook to catch the hammer hook, requiring the user to manually release the trigger.	¶53	col. 9:35-52
whereupon in said forced reset semi-automatic position, rearward movement of the bolt carrier causes rearward pivoting of said hammer causing said trigger member to be forced to said set position,	In "forced reset" mode, rearward movement of the bolt carrier causes the hammer to pivot, which in turn mechanically moves the trigger to the set position.	¶53	col. 10:2-14
said safety selector preventing said disconnector hook from catching said hammer hook,	The complaint alleges the safety selector prevents the disconnector hook from catching the hammer hook in the "forced reset" position.	¶53	col. 10:2-9
and thereafter when the bolt carrier reaches the substantially in-battery position the user can pull said trigger member to fire the firearm without manually releasing said trigger member.	When the bolt carrier is in battery, the user can pull the trigger without first having to manually release pressure from it.	¶53	col. 10:9-14

• Identified Points of Contention:
  • Technical Questions: The infringement case for the '003 Patent appears more direct, as it explicitly claims the dual-mode functionality alleged to be in the accused product. The dispute will likely focus on the specific technical implementation. A key question will be whether the Disruptor's safety selector "prevents" the disconnector from catching the hammer in the exact manner required by the claims and described in the specification, or if it achieves a similar result through a technically distinct mechanism.

V. Key Claim Terms for Construction

'223 Patent

• The Term: "a trigger mechanism, comprising:" (followed by a list of elements not including a disconnector)
• Context and Importance: This term's construction is critical because the accused product contains a disconnector, whereas Claim 4 of the '223 Patent does not recite one and the specification contrasts the invention with prior art that uses one ʼ223 Patent, col. 1:21-39 The infringement analysis depends on whether the claim is interpreted as covering any mechanism that can operate in a mode without using a disconnector, or if it is limited to a device that structurally lacks a disconnector altogether.
• Intrinsic Evidence for Interpretation:
  • Evidence for a Broader Interpretation: Plaintiffs may argue that the claim defines a functional relationship of parts during the "forced reset" operation, and that the presence of other components used in a different, non-claimed mode of operation is irrelevant. The claim recites a "comprising" list, which is presumptively open-ended and allows for additional, unrecited elements.
  • Evidence for a Narrower Interpretation: Defendants may argue that the patent teaches away from using a disconnector, framing its absence as a key feature of the invention '223 Patent, col. 1:53-55 They may contend that a device that includes a disconnector, even if disabled in one mode, is a different invention from the one claimed.

'003 Patent

• The Term: "said safety selector preventing said disconnector hook from catching said hammer hook"
• Context and Importance: This functional language is the core of how the "forced reset" mode is distinguished from the "standard" mode in Claim 4. The case will likely turn on what evidence is required to show "preventing." Practitioners may focus on this term because the infringement determination will depend on the specific interaction between the selector and the disconnector in the accused product.
• Intrinsic Evidence for Interpretation:
  • Evidence for a Broader Interpretation: The abstract and summary simply state the selector prevents the action '003 Patent, abstract Plaintiffs could argue any mechanism by which the selector's position results in the disconnector failing to engage the hammer meets this limitation, regardless of direct or indirect action.
  • Evidence for a Narrower Interpretation: The specification describes a specific embodiment where a "narrow semi-circular portion 116" of the selector "prevents the disconnector 60 from pivoting with the trigger member 38" '003 Patent, col. 9:26-34 Defendants may argue the term should be limited to this specific blocking mechanism shown in the patent's figures and description.

VI. Other Allegations

• Indirect Infringement: Plaintiffs allege both induced and contributory infringement for all asserted patents. The inducement allegations are based on Defendants' alleged "encouraging, advertising, promoting, and instructing" of customers to install and use the Disruptor in an infringing manner Compl. ¶¶40; 54; 68; 82; 96 The contributory infringement allegations are based on the assertion that the Disruptor's components are specially designed to infringe and are not suitable for substantial noninfringing use Compl. ¶¶42; 56; 70; 84; 98
• Willful Infringement: Plaintiffs allege that Defendants' infringement was and is willful. The allegations are primarily based on pre-suit knowledge, citing a webpage on the website of "Partisan Triggers," the alleged original manufacturer of the Disruptor, titled "FRT Legal Library." This page is alleged to link to copies of the '223, '003, and '336 patents, suggesting Defendants were aware of Plaintiffs' patent rights Compl. ¶35

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

• A core issue for the '223 patent will be one of claim scope: can a claim for a trigger mechanism that is distinguished from the prior art by not requiring a disconnector be infringed by a product that contains a disconnector, even if it is non-functional in the accused mode of operation?
• A central evidentiary question for the later patents ('003, '336, '807, '403) will be one of technical mechanism: does the accused "Disruptor" product's safety selector achieve the "forced reset" mode by "preventing" the disconnector from engaging the hammer in the specific manner required by the claims, or does it operate via a materially different interaction?
• A key question for damages will be one of scienter: does the alleged "FRT Legal Library" on the purported manufacturer's website provide sufficient evidence of pre-suit knowledge to support a finding of willful infringement against these specific Defendants?