ABC IP LLC v. Cloak Industries Inc

I. Executive Summary and Procedural Information

• Parties & Counsel:
  • Plaintiff: ABC IP, LLC (Delaware); Rare Breed Triggers, Inc. (Texas); and RBTM LLC (Wyoming)
  • Defendant: Cloak Industries, Inc. (Idaho) and William C. King Jr. (Idaho)
  • Plaintiff's Counsel: Fish & Richardson P.C.; Beard ST. Clair Gaffney PA; Wood Herron & Evans LLP
• Case Identification: 4:26-cv-00608, D. Idaho, 05/27/2026
• Venue Allegations: Venue is alleged to be proper in the District of Idaho because Defendants reside in the district, have a regular and established place of business there, and have committed the alleged acts of infringement within the district.
• Core Dispute: Plaintiffs allege that Defendants' "Disruptor" line of firearm trigger assemblies infringes five U.S. patents related to "forced reset" trigger mechanisms that increase the potential rate of semi-automatic fire.
• Technical Context: The technology concerns aftermarket trigger mechanisms for popular semi-automatic firearms, such as the AR-15 platform, which use the firearm's mechanical action to reset the trigger, thereby enabling a faster rate of fire than standard trigger designs.
• Key Procedural History: The complaint alleges that the website of Partisan Triggers, identified as the purported original manufacturer of the accused device, maintains a "Legal Library" that links to copies of three of the asserted patents. Plaintiffs present this as evidence of Defendants' pre-suit knowledge of the patents, which may be used to support allegations of willful infringement.

Case Timeline

Date	Event
2017-09-29	Priority Date for U.S. Patent No. 10,514,223
2019-12-24	U.S. Patent No. 10,514,223 Issues
2020-01-01	Plaintiffs allegedly began use of "FRT" trademark
2022-01-10	Priority Date for '003, '336, '807, and '403 Patents
2023-08-15	U.S. Patent No. 11,724,003 Issues
2024-07-16	U.S. Patent No. 12,036,336 Issues
2025-04-15	U.S. Patent No. 12,274,807 Issues
2026-05-26	U.S. Patent No. 12,636,403 Issues
2026-05-27	First Amended Complaint for Patent Infringement Filed

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

U.S. Patent No. 10,514,223 - "Firearm Trigger Mechanism"

The Invention Explained

• Problem Addressed: In standard semi-automatic firearms, a disconnector holds the hammer after a shot is fired until the user manually releases the trigger. This mechanism prevents multiple rounds from being fired with a single pull but also limits the maximum rate of fire Compl. ¶¶21-22 '223 Patent, col. 1:25-39
• The Patented Solution: The invention is a "forced reset" trigger mechanism where the cycling of the firearm's bolt carrier pushes the hammer rearward, and the hammer in turn makes contact with the trigger member, mechanically forcing it back to the reset position Compl. ¶23 A separate "locking bar" then blocks the trigger, preventing it from being pulled again until the bolt carrier has fully returned to its "in-battery" (safe-to-fire) position, which prevents "hammer follow" Compl. ¶24 '223 Patent, abstract '223 Patent, col. 5:25-50
• Technical Importance: This design enables a significantly increased rate of semi-automatic fire by using the firearm's own mechanical energy to reset the trigger, bypassing the need for the shooter to manually do so, and can be implemented as a "drop-in" module for existing popular firearms '223 Patent, col. 2:30-41

Key Claims at a Glance

• The complaint asserts infringement of Claim 4 Compl. ¶41
• The essential elements of independent Claim 4 are:
  • A trigger mechanism for a firearm, comprising a housing, a hammer, a trigger member, and a locking bar.
  • The trigger member has a surface that is contacted by the hammer when the hammer is displaced by the cycling bolt carrier.
  • This contact causes the trigger member to be "forced to the set position."
  • A locking bar is pivotally mounted and spring-biased to a first position where it mechanically blocks the trigger member.
  • The locking bar is movable against its spring bias to a second, un-blocking position when contacted by the bolt carrier as it reaches a "substantially in-battery position."
• The complaint also asserts infringement under the doctrine of equivalents and reserves the right to assert other claims Compl. ¶41

U.S. Patent No. 11,724,003 - "Firearm Trigger Mechanism"

The Invention Explained

• Problem Addressed: While forced reset triggers increase the rate of fire, there is a desire for a single mechanism that can offer both this enhanced capability and the operation of a standard semi-automatic trigger Compl. ¶25
• The Patented Solution: This invention builds on the forced reset concept by adding a three-position safety selector. The selector allows the user to choose between: (1) a safe position, (2) a standard semi-automatic mode that uses a traditional disconnector, and (3) a forced reset semi-automatic mode Compl. ¶25 '003 Patent, abstract In the forced reset mode, the safety selector is configured to prevent the disconnector from catching the hammer, thereby enabling the forced reset functionality '003 Patent, col. 4:4-13
• Technical Importance: This innovation provides shooters with the versatility to switch between a conventional trigger feel and a rapid-fire forced reset capability within a single, integrated "drop-in" trigger assembly '003 Patent, abstract

Key Claims at a Glance

• The complaint asserts infringement of Claim 4 Compl. ¶56
• The essential elements of independent Claim 4 are:
  • A firearm trigger mechanism comprising a housing, hammer, trigger member, disconnector, locking member, and a safety selector.
  • The mechanism includes the "forced reset" interaction where the hammer forces the trigger to the set position.
  • It includes a safety selector adapted to pivot between "safe, standard semi-automatic, and forced reset semi-automatic positions."
  • In the standard position, the disconnector hook catches the hammer hook, requiring the user to manually release the trigger.
  • In the forced reset position, the safety selector prevents the disconnector hook from catching the hammer hook, allowing the user to fire again without manually releasing the trigger once the bolt is in battery.
• The complaint also asserts infringement under the doctrine of equivalents and reserves the right to assert other claims Compl. ¶56

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

• Patent Identification: U.S. Patent No. 12,036,336 ("the '336 Patent"), "Firearm Trigger Mechanism," issued July 16, 2024.
• Technology Synopsis: This patent, part of the same family as the '003 patent, describes a trigger mechanism with a multi-position safety selector. This selector allows a user to choose between a standard semi-automatic mode, which uses a disconnector, and a "forced reset" mode that enables a higher rate of fire Compl. ¶25 '336 Patent, abstract In the forced reset mode, the safety selector is configured to reposition the disconnector to prevent it from catching the hammer '336 Patent, Claim 3
• Asserted Claims: The complaint asserts infringement of at least Claim 3 Compl. ¶72
• Accused Features: The "Disruptor" trigger's three-position safety selector and its ability to operate in both a standard semi-automatic mode and a "forced reset" mode are alleged to infringe Compl. ¶29

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

• Patent Identification: U.S. Patent No. 12,274,807 ("the '807 Patent"), "Firearm Trigger Mechanism," issued April 15, 2025.
• Technology Synopsis: Belonging to the same patent family as the '003 and '336 patents, this patent discloses a trigger mechanism featuring a safety selector for switching between standard semi-automatic and "forced reset" modes Compl. ¶25 '807 Patent, abstract The invention combines the functionality of a traditional disconnector-based trigger with the rapid-fire capability of a forced reset system, selectable by the user.
• Asserted Claims: The complaint asserts infringement of at least Claim 1 Compl. ¶87
• Accused Features: The allegations target the "Disruptor" trigger's functionality, specifically its multi-position selector that enables switching between a standard mode and a "forced reset" mode Compl. ¶29

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

• Patent Identification: U.S. Patent No. 12,636,403 ("the '403 Patent"), "Firearm Trigger Mechanism," issued May 26, 2026.
• Technology Synopsis: As a member of the same patent family, this patent also describes a trigger mechanism with user-selectable modes. It claims a forced reset trigger mechanism with a safety selector movable between a standard semi-automatic position and a forced reset position '403 Patent, Claim 38 This allows the user to choose between conventional operation and an enhanced rate of fire.
• Asserted Claims: The complaint asserts infringement of at least Claim 38 Compl. ¶104
• Accused Features: The infringement allegations are directed at the "Disruptor" trigger's selector-based switching between standard and "forced reset" operating modes Compl. ¶29

III. The Accused Instrumentality

Product Identification

• The accused products are trigger assemblies known as the "Disruptor" and sold in several configurations, including "THE PARTISAN DISRUPTOR AR15 FORCED RESET TRIGGER" Compl. ¶27 Compl. ¶28

Functionality and Market Context

• The complaint alleges the Disruptor is a trigger assembly for AR-pattern firearms that provides multiple modes of operation selected via a three-position safety selector Compl. ¶27 The alleged modes are a "standard semiautomatic with disconnector" mode and a "'forced reset' semiautomatic" mode Compl. ¶29 In the forced reset mode, the cycling of the firearm's action is alleged to cause hammer contact that mechanically resets the trigger, with a locking bar preventing premature firing until the bolt carrier is in battery Compl. ¶30 The products are marketed and sold online through the Defendants' website Compl. ¶28 The complaint includes a screenshot from the Defendants' website showing the accused product listings Compl. p. 7

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 openings for hammer and trigger pins.	¶43, p. 16	col. 3:35-44
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 to pivot.	¶43, p. 16	col. 3:50-54
a trigger member having a sear and mounted in the housing to pivot on a transverse axis between set and released positions,	The Disruptor has a trigger member with a sear that is mounted in the housing to pivot.	¶43, p. 18	col. 3:55-6:67
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 trigger member has a surface contacted by the hammer during rearward pivoting, which allegedly causes the trigger to be mechanically moved to the set position.	¶43, p. 19; ¶43, p. 20	col. 5:31-37
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 is spring biased to a first position where it allegedly blocks the trigger member from moving.	¶43, p. 21	col. 5:1-6
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...	The locking bar is alleged to be movable against its spring bias to a second position when contacted by the bolt carrier, allowing the trigger member to be pulled by an external force (the user's finger).	¶43, p. 21; ¶43, p. 22	col. 5:56-6:6

The complaint includes a plaintiff-generated rendering illustrating the alleged contact between the hammer surface and trigger surface that forces the reset Compl. p. 19

Identified Points of Contention

• Scope Questions: A potential issue may arise from the interpretation of "forced to the set position." The analysis will question whether the specific interaction between the hammer and trigger in the accused device meets the functional requirements of this limitation as defined by the patent's specification and figures.
• Technical Questions: The complaint alleges the Disruptor's "locking bar/member" performs the blocking and releasing function as claimed. A central technical question will be whether the accused component operates in a manner consistent with the claimed "locking bar," which is spring-biased to a blocking position and moved to a non-blocking position only when the bolt carrier is in battery.

'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 is alleged to include a safety selector that pivots between safe, standard semi-automatic, and "forced reset" semi-automatic positions.	¶58, p. 36	col. 9:11-15
whereupon in said standard semi-automatic position, rearward movement of the bolt carrier causes...said disconnector hook [to catch] said hammer hook, at which time a user must manually release said trigger member...	While in standard semi-automatic mode, rearward movement of the bolt carrier allegedly causes the disconnector hook to catch the hammer hook.	¶58, p. 36	col. 9:35-43
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,	When in the "forced reset" mode, rearward movement of the bolt carrier is alleged to cause the hammer to pivot, which in turn mechanically moves the trigger to the set position.	¶58, p. 37	col. 9:44-49
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 when in the "forced reset" position.	¶58, p. 38	col. 9:49-51
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 allegedly pull the trigger to fire without first releasing pressure from the previous cycle.	¶58, p. 38	col. 9:51-55

The complaint provides plaintiff-generated diagrams illustrating the alleged function of the disconnector and its interaction with the hammer hook Compl. p. 33

Identified Points of Contention

• Scope Questions: The claim requires the safety selector to prevent the disconnector from catching the hammer. The litigation may focus on whether this functional language is met if the accused selector achieves this result through direct physical blocking, repositioning the disconnector, or another mechanism.
• Technical Questions: An evidentiary question will be how the accused safety selector technically operates. The court will need to determine if the selector's movement between the "standard" and "forced reset" positions causes the specific functional outcomes required by the claim-namely, allowing the disconnector to engage in one mode and preventing it from engaging in the other.

V. Key Claim Terms for Construction

For the '223 Patent:

• The Term: "forced to the set position"
• Context and Importance: This term is the central inventive concept of the '223 patent, distinguishing it from triggers that require manual release. The outcome of the infringement analysis for the '223 patent will likely depend on whether the interaction between the hammer and trigger in the accused "Disruptor" is construed as "forcing" the trigger to its reset state.
• Intrinsic Evidence for Interpretation:
  • Evidence for a Broader Interpretation: The specification describes the action functionally: "mechanical interference or contact between a rear surface... of the hammer... and a contact surface... of the trigger member... forces the trigger to pivot... to its reset position" '223 Patent, col. 5:31-37 This language could support an interpretation covering any mechanism where hammer contact directly causes the trigger to reset.
  • Evidence for a Narrower Interpretation: The figures depict a specific geometry where the hammer's tail portion (44) contacts a surface (30) on the trigger member '223 Patent, Fig. 5 A party could argue that the term should be limited to this specific type of contact, rather than any incidental contact that results in a reset.

For the '003 Patent:

• The Term: "safety selector preventing said disconnector hook from catching said hammer hook"
• Context and Importance: This limitation defines the unique functionality of the '003 patent family. The infringement case for the '003, '336, '807, and '403 patents will hinge on whether the accused "Disruptor" selector performs this specific preventative function.
• Intrinsic Evidence for Interpretation:
  • Evidence for a Broader Interpretation: The plain language of the claim is functional, suggesting that any way the selector "prevents" the hook from catching would meet the limitation. The abstract uses similar functional language: "the safety selector preventing the disconnector hook from catching the hammer hook" '003 Patent, abstract
  • Evidence for a Narrower Interpretation: A related patent in the family explicitly claims the selector "causes said disconnector to be repositioned and in doing so prevents said disconnector hook from catching" '336 Patent, Claim 3 A party may argue this implies a specific mechanism of action (repositioning) that should be read into the broader "preventing" language of the '003 patent. Practitioners may focus on whether "preventing" requires a specific physical blocking action by the selector itself versus an indirect consequence of the selector's position.

VI. Other Allegations

Indirect Infringement

• The complaint alleges induced infringement, stating that Defendants' website and promotional materials instruct and encourage customers to install and use the "Disruptor" in a manner that directly infringes, such as by installing it into an AR-15 platform firearm Compl. ¶44 Compl. ¶59 Compl. ¶75 The complaint also alleges contributory infringement on the basis that the "Disruptor" and its components are specially designed to be used in an infringing manner and are not suitable for substantial noninfringing use Compl. ¶47 Compl. ¶63 Compl. ¶78

Willful Infringement

• The complaint alleges that Defendants had pre-suit knowledge of the asserted patents and their relevance to the accused products Compl. ¶48 Compl. ¶64 This allegation is supported by the claim that the website for "Partisan Triggers," the "purported original manufacturer of the Disruptor," includes a "Legal Library" with links to the '223, '003, and '336 patents Compl. ¶33 This is presented as direct evidence of knowledge, forming the basis for the willfulness claim.

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

• A primary issue will be one of claim construction: Can the term "forced to the set position" from the '223 patent be interpreted to read on the specific mechanical interaction between the hammer and trigger in the accused "Disruptor" device, or will its definition be narrowed by the patent's specific embodiments?
• A key evidentiary question for the family of patents covering selectable modes ('003, '336, '807, '403) will be one of technical operation: Does the accused product's three-position safety selector function to "prevent" the disconnector from engaging the hammer in the precise manner required by the claims, or is there a fundamental difference in its mode-switching mechanism that could support a non-infringement argument?
• A significant question for damages will be one of willfulness: Do the allegations regarding the "Legal Library" on a related entity's website constitute sufficient evidence of pre-suit knowledge to prove that any infringement was willful, potentially exposing Defendants to enhanced damages under 35 U.S.C. § 284?