ABC IP LLC v. Ar TT LLC

I. Executive Summary and Procedural Information

• Parties & Counsel:
  • Plaintiff: ABC IP, LLC (Delaware); Rare Breed Triggers, Inc. (Texas); and RBTM LLC (Wyoming)
  • Defendant: AR-TT, LLC, d/b/a Takedown Tools (Washington); Clausen Inc. (Washington); Jonathan Clausen (Washington); and Jodi Clausen (Washington)
  • Plaintiff's Counsel: Kutak Rock, LLP
• Case Identification: 2:26-cv-00014, E.D. Wash., 05/27/2026
• Venue Allegations: Venue is asserted based on Defendants' residence, regular and established place of business, and commission of infringing acts within the Eastern District of Washington.
• Core Dispute: Plaintiffs allege that Defendants' firearm trigger mechanisms, sold under brands including "Super Safety," "Atrius Selector," "Disruptor," and "ARC-Fire," infringe nine U.S. patents related to "forced reset" trigger technology.
• Technical Context: The technology involves trigger mechanisms for semi-automatic firearms designed to increase the potential rate of fire by using the firearm's cycling action to mechanically reset the trigger.
• Key Procedural History: The complaint alleges that Defendants' websites and the website of a related entity, Partisan Triggers, contain a "Legal Library" that links to copies of several of the asserted patents, which may be used to argue pre-suit knowledge for claims of willful infringement.

Case Timeline

Date	Event
2017-09-29	Priority Date for '223 Patent
2019-12-24	U.S. Patent No. 10,514,223 Issues
2020-01-01	Plaintiffs' alleged use of FRT mark begins "at least" as early as 2020
2022-01-10	Priority Date for '003, '336, '807, and '403 Patents
2023-08-15	U.S. Patent No. 11,724,003 Issues
2024-07-09	U.S. Patent No. 12,031,784 Issues
2024-07-16	U.S. Patent No. 12,038,247 Issues
2024-07-16	U.S. Patent No. 12,036,336 Issues
2025-04-15	U.S. Patent No. 12,274,807 Issues
2026-01-20	U.S. Patent No. 12,529,538 Issues
2026-03-17	U.S. Patent No. 12,578,159 Issues
2026-05-26	U.S. Patent No. 12,636,403 Issues
2026-05-27	First Amended Complaint Filed

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: The patent background describes the limitations of standard semi-automatic triggers, where the rate of fire is limited by the user's physical ability to release the trigger to reset the sear, and notes that prior art solutions to increase firing rates are complex, expensive, or require significant practice Compl. ¶¶28-29 '223 Patent, col. 1:15-54
• The Patented Solution: The invention is a trigger mechanism, often constructed as a "drop-in" module, that uses the rearward motion of the firearm's bolt carrier to force the trigger back to its reset position Compl. ¶34 '223 Patent, abstract This "forced reset" is achieved through direct mechanical contact between the hammer (as it is pushed back by the bolt carrier) and a surface on the trigger member '223 Patent, col. 5:32-38 A locking bar prevents the trigger from being pulled again until the bolt carrier has returned to its "in-battery" position, preventing "hammer follow" '223 Patent, col. 5:38-50
• Technical Importance: The invention provides a mechanical solution to accelerate the firing sequence of a semi-automatic firearm that can be retrofitted into popular firearm platforms like the AR-15 without modifying the bolt carrier '223 Patent, col. 2:30-44

Key Claims at a Glance

• The complaint asserts independent claim 4 Compl. ¶126
• The essential elements of claim 4 include:
  • A housing with openings for hammer and trigger pins.
  • A hammer mounted in the housing to pivot.
  • A trigger member with a sear, also mounted to pivot.
  • A surface on the trigger member positioned to be contacted by the hammer when the bolt carrier cycles, with this contact "causing the trigger member to be forced to the set position."
  • A locking bar that pivots and is spring-biased to a first position where it "mechanically blocks the trigger member from moving to the released position."
  • The locking bar is movable to a second position when contacted by the bolt carrier as it reaches its in-battery position, allowing the trigger to be moved to the released position.

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

The Invention Explained

• Problem Addressed: The patent seeks to provide further improvements in "forced reset" triggers, building on earlier designs Compl. ¶35 '003 Patent, col. 2:21-22 The core problem remains increasing the rate of semi-automatic fire safely and reliably.
• The Patented Solution: This patent describes a trigger mechanism with a three-position safety selector: "safe," "standard semi-automatic," and "forced reset semi-automatic" Compl. ¶35 '003 Patent, abstract In the "forced reset" mode, the mechanism operates similarly to the '223 Patent, but with an added feature: the safety selector is configured to prevent the disconnector from catching the hammer hook, ensuring the forced reset cycle completes without interference from the disconnector '003 Patent, col. 9:26-44 This allows the user to fire again as soon as the bolt is in battery, without needing to manually release the trigger to reset the disconnector.
• Technical Importance: The invention provides user-selectable firing modes, allowing the operator to choose between a conventional semi-automatic operation and an accelerated "forced reset" operation within a single trigger assembly '003 Patent, col. 3:55-63

Key Claims at a Glance

• The complaint asserts independent claim 4 Compl. ¶141
• The essential elements of claim 4 are substantially similar to claim 4 of the '223 patent but add the element of a multi-position safety selector:
  • Includes the core housing, hammer, trigger, disconnector, and locking bar elements of a forced reset mechanism.
  • Adds "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."
  • Requires that in the "forced reset" position, the safety selector "prevents said disconnector hook from catching said hammer hook."

Multi-Patent Capsules

• U.S. Patent No. 12,038,247 (Issued July 16, 2024)

  • Technology Synopsis: The complaint describes the '247 Patent as providing a novel device for accelerating the firing sequence of a semi-automatic firearm. It uses a cam, rotated by the cycling of the action, to cause the trigger member to reset and prevent it from being pulled again until the action has returned to the in-battery position Compl. ¶31
  • Asserted Claims: Independent claim 15 Compl. ¶64
  • Accused Features: The "Super Safety," "Atrius Selector," and "ARC-Fire" products Compl. ¶64

• U.S. Patent No. 12,031,784 (Issued July 9, 2024)

  • Technology Synopsis: The '784 Patent is described as providing an extended trigger member locking mechanism for a semi-automatic firearm. It employs a "deflectable extension of the locking member" that is actuated by the bolt carrier's forward movement, overcoming geometric limitations of prior art designs Compl. ¶32
  • Asserted Claims: Independent claim 1 Compl. ¶80
  • Accused Features: The "Super Safety," "Atrius Selector," and "ARC-Fire" products Compl. ¶80

• U.S. Patent No. 12,529,538 (Issued Jan. 20, 2026)

  • Technology Synopsis: This patent allegedly provides a safety mechanism that uses a cam selector with multiple recesses to operate in three modes. The modes control whether and how a "trigger tail portion" can move, including a mode that prevents the trigger from being pulled Compl. ¶33
  • Asserted Claims: Independent claim 1 Compl. ¶96
  • Accused Features: The "Super Safety" product Compl. ¶97

• U.S. Patent No. 12,578,159 (Issued March 17, 2026)

  • Technology Synopsis: The complaint groups the '159 Patent with the '247 Patent, describing it as a device that accelerates the firing sequence using a cam to reset the trigger. It allows selection between a standard semi-automatic mode and a "forced reset" mode Compl. ¶31
  • Asserted Claims: Independent claim 1 Compl. ¶110
  • Accused Features: The "Super Safety," "Atrius Selector," and "ARC-Fire" products Compl. ¶110

• U.S. Patent No. 12,036,336 (Issued July 16, 2024)

  • Technology Synopsis: This patent is described along with the '003 Patent as claiming a device with two selectable modes: 1) standard disconnector semiautomatic mode and 2) "forced reset" semiautomatic mode Compl. ¶35
  • Asserted Claims: Independent claim 3 Compl. ¶156
  • Accused Features: "The Disruptor" product Compl. ¶157

• U.S. Patent No. 12,274,807 (Issued April 15, 2025)

  • Technology Synopsis: This patent is described along with the '003 Patent as claiming a device with two selectable modes: 1) standard disconnector semiautomatic mode and 2) "forced reset" semiautomatic mode Compl. ¶35
  • Asserted Claims: Independent claim 1 Compl. ¶170
  • Accused Features: "The Disruptor" product Compl. ¶171

• U.S. Patent No. 12,636,403 (Issued May 26, 2026)

  • Technology Synopsis: This patent is described along with the '003 Patent as claiming a device with two selectable modes: 1) standard disconnector semiautomatic mode and 2) "forced reset" semiautomatic mode Compl. ¶35
  • Asserted Claims: Independent claim 38 Compl. ¶185
  • Accused Features: The "Infringing Devices," which include the Super Safety, Atrius Selector, ARC-Fire, and Disruptor Compl. ¶186

III. The Accused Instrumentality

Product Identification

The accused instrumentalities are the "Super Safety," "Atrius Selector," "The Disruptor," and "ARC-Fire" trigger mechanisms Compl. ¶¶37-56

Functionality and Market Context

The complaint alleges these products are sold as kits or standalone components for installation in AR-pattern firearms (Compl. ¶¶39; ¶43; ¶47; ¶54). They are described as "forced reset" triggers that use the cycling of the firearm's action to mechanically reset the trigger, enabling a faster rate of fire than standard semi-automatic triggers (Compl. ¶49; Compl. ¶50). The products are allegedly capable of operating in multiple modes, including a standard semi-automatic mode and a "forced reset" mode, selectable by the user (Compl. ¶¶41; ¶45; ¶49; ¶56). Plaintiffs allege Defendants market these products on the "artakedowntool.com" website and improperly use Plaintiffs' "FRT" trademark to promote sales (Compl. ¶¶39; ¶59). A screenshot from the Defendants' website shows various "Disruptor" products, including multi-packs and bundles Compl. p. 14

IV. Analysis of Infringement Allegations

Infringement Allegations: U.S. Patent No. 10,514,223

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 is a cassette-style trigger that includes a housing with transversely aligned openings for the hammer and trigger pins. A diagram illustrates the accused Disruptor's housing with designated first and second openings for assembly pins Compl. p. 148	¶128	col. 3:35-43
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 that is mounted in the housing and pivots on a transverse axis.	¶128	col. 3:51-53; col. 4:25-27
a trigger member having a sear and mounted in the housing to pivot on a transverse axis between set and released positions,	The Disruptor includes a trigger member with a sear mounted in the housing that pivots on a transverse axis.	¶128	col. 3:54-61
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;	When the Disruptor's hammer is displaced by the bolt carrier, a surface on the hammer contacts a surface on the trigger, mechanically forcing the trigger to its set position.	¶128	col. 5:32-38
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 locking bar that is pivotally mounted and spring-biased. In its first position, it mechanically blocks the trigger from being pulled.	¶128	col. 4:3-13
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 Disruptor's locking bar is moved against its spring bias by the bolt carrier when it reaches the in-battery position, which un-blocks the trigger and allows it to be pulled.	¶128	col. 4:3-13; col. 6:3-12

• Identified Points of Contention:
  • Scope Questions: The analysis may focus on whether the term "substantially in-battery position" has a precise technical meaning that the accused device meets. The timing of the locking bar's movement relative to the bolt carrier's final position could be a point of dispute.
  • Technical Questions: A key evidentiary question will be whether the interaction between the hammer and trigger in the accused Disruptor performs the function of "forcing" the trigger to the set position in the exact manner claimed. While the complaint provides diagrams, the actual forces and movements under operational conditions will be critical.

Infringement Allegations: U.S. Patent No. 11,724,003

Claim Element (from Independent Claim 4)	Alleged Infringing Functionality	Complaint Citation	Patent Citation
a housing having a first pair of transversely aligned openings for receiving a hammer pin and a second pair of transversely aligned openings for receiving a trigger member pin,	The Disruptor is a cassette-style trigger mechanism with a housing containing openings for hammer and trigger pins.	¶143	col. 7:45-59
a hammer... adapted to be pivoted rearward by rearward movement of a bolt carrier,	The Disruptor's hammer is pivoted rearward by the cycling of the bolt carrier.	¶143	col. 8:58-61
a trigger member... having a surface positioned to be contacted by a surface of said hammer during rearward pivoting... to cause said trigger member to be forced to said set position,	During operation, a surface on the Disruptor's hammer contacts a surface on the trigger, forcing the trigger to its set position.	¶143	col. 9:15-24
a disconnector having a hook for engaging said hammer and mounted in said housing to pivot on said trigger member pin,	The Disruptor includes a disconnector with a hook for engaging the hammer, and it is mounted in the housing to pivot on the trigger pin.	¶143	col. 8:25-28
a locking member mounted in said housing to pivot on a transverse locking member pin... being pivotable between a first position... [which] mechanically blocks said trigger member... and a second position... [which] does not,	The Disruptor includes a pivoting locking bar that, in a first position, blocks the trigger, and in a second position (when moved by the in-battery bolt carrier), does not block the trigger.	¶143	col. 11:21-51
a safety selector adapted to be mounted... to pivot between safe, standard semi-automatic, and forced reset semi-automatic positions,	The Disruptor includes a safety selector that allows the user to pivot between safe, standard semi-automatic, and "forced reset" modes.	¶143	col. 9:1-8
whereupon in said forced reset semi-automatic position... said safety selector preventing said disconnector hook from catching said hammer hook,	In the "forced reset" mode, the Disruptor's safety selector allegedly prevents the disconnector from catching the hammer, a key feature of the claimed invention. An exemplary photo shows the safety selector component of the accused Disruptor Compl. p. 167	¶143	col. 9:26-44

• Identified Points of Contention:
  • Scope Questions: The most critical point of contention for this patent will likely be the interpretation of "preventing said disconnector hook from catching said hammer hook." The dispute will center on whether the accused safety selector performs this exact function, or if it achieves a similar outcome through a different, non-infringing mechanism.
  • Technical Questions: Evidence will be required to demonstrate the precise interaction between the safety selector and the disconnector in the accused "Disruptor" during the "forced reset" mode. The complaint's color-coded diagrams Compl. p. 168 present a clear theory, but this will be subject to expert testimony and technical testing.

V. Key Claim Terms for Construction

U.S. Patent No. 10,514,223

• The Term: "locking bar"
• Context and Importance: The locking bar is the safety feature that prevents the trigger from being pulled before the bolt carrier is fully in battery. Its definition and required functionality are central to both infringement and potential validity arguments, as it distinguishes the invention from unsafe or uncontrolled mechanisms. Practitioners may focus on this term because its interaction with both the trigger and the bolt carrier defines the core safety cycle of the claimed forced reset mechanism.
• Intrinsic Evidence for Interpretation:
  • Evidence for a Broader Interpretation: Claim 4 describes the locking bar functionally as being "pivotally mounted" and "spring biased" to "mechanically block the trigger member," and being moved out of the way by "contact from the bolt carrier." This functional language could support a construction covering any component that performs these roles, regardless of its specific shape.
  • Evidence for a Narrower Interpretation: The specification shows the locking bar 62 as a distinct, L-shaped component that pivots on a dedicated pin 68 and has specific contact surfaces '223 Patent, Fig. 1 '223 Patent, col. 4:3-8 An accused infringer might argue that the term is limited to a structure with this specific geometry and mounting arrangement.

U.S. Patent No. 11,724,003

• The Term: "said safety selector preventing said disconnector hook from catching said hammer hook"
• Context and Importance: This limitation defines the unique operation of the "forced reset" mode in this patent, distinguishing it from a standard semi-automatic cycle where the disconnector is intended to catch the hammer. Infringement of the forced reset feature hinges on whether the accused device's safety selector performs this specific "preventing" function.
• Intrinsic Evidence for Interpretation:
  • Evidence for a Broader Interpretation: The claim language is purely functional, suggesting that any mechanism by which the safety selector's position results in the disconnector being prevented from catching the hammer could fall within the claim's scope.
  • Evidence for a Narrower Interpretation: The specification describes a specific structural basis for this function: "a narrow semi-circular portion 116 of the safety selector 110... prevents the disconnector 60 from pivoting with the trigger member 38 thus preventing the disconnector hook 64 from catching the hammer hook 53" '003 Patent, col. 9:33-38 A defendant may argue that the claim should be limited to this specific mechanical blocking action caused by the selector's geometry.

VI. Other Allegations

• Indirect Infringement: The complaint alleges both induced and contributory infringement for all asserted patents. For inducement, it claims Defendants provide promotional materials and installation guides that actively encourage and instruct customers to install and use the accused products in an infringing manner (Compl. ¶69; Compl. ¶70; Compl. ¶71; Compl. ¶72; Compl. ¶73; Compl. ¶74; Compl. ¶75; Compl. ¶76; Compl. ¶77; Compl. ¶78; Compl. ¶79; Compl. ¶80; Compl. ¶81; Compl. ¶82; Compl. ¶83; Compl. ¶84; Compl. ¶85; Compl. ¶86; Compl. ¶87; Compl. ¶88; Compl. ¶89; Compl. ¶90; Compl. ¶91; Compl. ¶92; Compl. ¶93; Compl. ¶94; Compl. ¶95; Compl. ¶96; Compl. ¶97; Compl. ¶98; Compl. ¶99; Compl. ¶100; Compl. ¶101; Compl. ¶102; Compl. ¶103; Compl. ¶104; Compl. ¶105; Compl. ¶106; Compl. ¶107; Compl. ¶108; Compl. ¶109; Compl. ¶110; Compl. ¶111; Compl. ¶112; Compl. ¶113; Compl. ¶114; Compl. ¶115; Compl. ¶116; Compl. ¶117; Compl. ¶118; Compl. ¶119; Compl. ¶120; Compl. ¶121; Compl. ¶122; Compl. ¶123; Compl. ¶124; Compl. ¶125; Compl. ¶126; Compl. ¶127; Compl. ¶128; Compl. ¶129; Compl. ¶130). For contributory infringement, the complaint alleges the accused components "are not suitable for substantial noninfringing use as they are specially designed and adapted" to create the infringing trigger mechanisms (Compl. ¶¶71; ¶132).
• Willful Infringement: Willfulness is alleged for all asserted patents based on both pre- and post-suit knowledge. The complaint alleges pre-suit knowledge by citing Defendants' and a related party's websites, which purportedly host a "Legal Library" with links to the '223, '003, and '336 patents Compl. ¶27 This is presented as direct evidence of Defendants' awareness of the patents prior to the lawsuit. Post-suit knowledge is based on the filing of the complaint itself Compl. ¶102

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

This litigation presents several complex technical and legal questions for the court. The outcome will likely depend on the resolution of three central issues:

1. Claim Construction: A primary battleground will be one of definitional scope, particularly for the '003 patent family. Can the functional claim language "preventing said disconnector hook from catching said hammer hook" be read broadly to cover any interaction where the safety selector's position leads to this result, or will it be limited to the specific mechanical blocking mechanism described in the patent's specification?

2. Factual Infringement: A key evidentiary question will be one of operational identity. Do the accused "Disruptor" and other products, when installed and operated, exhibit the precise sequence of mechanical interactions between the hammer, trigger, disconnector, locking bar, and safety selector as mandated by the asserted claims, or can Defendants demonstrate a fundamental mismatch in their technical operation?

3. Willfulness and Intent: The case will involve a significant inquiry into egregious conduct. Given the complaint's allegations that Defendants' own marketing ecosystem referenced the asserted patents, a central question will be whether this demonstrates a state of mind that constitutes willful infringement, potentially exposing Defendants to enhanced damages.