ABC IP LLC v. Kline

I. Executive Summary and Procedural Information

• Parties & Counsel:
  • Plaintiff: ABC IP, LLC (Delaware) and Rare Breed Triggers, Inc. (Texas)
  • Defendant: Jesse T. Kline (Mississippi)
  • Plaintiff's Counsel: Mockbee Ellis, PA.; Wood Herron & Evans LLP; Fish & Richardson P.C.
• Case Identification: 3:25-cv-00454, S.D. Miss., 07/21/2026
• Venue Allegations: Venue is alleged to be proper in the Southern District of Mississippi because the Defendant resides in the district, has committed alleged acts of infringement there, and maintains a regular and established place of business in the district.
• Core Dispute: Plaintiffs allege that Defendant's "3-Position Super Safety" product infringes five U.S. patents related to "forced reset" firearm trigger mechanisms.
• Technical Context: The technology concerns firearm trigger mechanisms that utilize the energy from a firearm's cycling action to mechanically reset the trigger, a function that can enable an accelerated rate of semi-automatic fire.
• Key Procedural History: The operative pleading is a Third Amended Complaint, suggesting prior amendments to the allegations or parties in the case.

Case Timeline

Date	Event
2021-11-05	Earliest Priority Date for '784 Patent
2022-01-10	Earliest Priority Date for '403 Patent
2022-09-08	Earliest Priority Date for '247 and '159 Patents
2023-12-04	Earliest Priority Date for '538 Patent
2024-05-02	Defendant allegedly offers infringing product for sale
2024-07-09	'784 Patent Issued
2024-07-16	'247 Patent Issued
2026-01-20	'538 Patent Issued
2026-03-17	'159 Patent Issued
2026-05-26	'403 Patent Issued
2026-07-21	Complaint Filing Date

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

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

The Invention Explained

• Problem Addressed: The patent background acknowledges the desire among some shooters to increase the rate of semi-automatic fire and notes that while devices exist to achieve this, "Further improvement in forced reset triggers is desired" '247 Patent, col. 2:15-16
• The Patented Solution: The invention is a trigger mechanism that includes a three-position safety selector, allowing the user to choose between "safe," "standard semi-automatic," and "forced reset semi-automatic" modes '247 Patent, col. 2:27-30 In the "forced reset" mode, the rearward movement of the firearm's bolt carrier pivots a cam, which in turn "forces the trigger member to the set position" '247 Patent, col. 2:60-61 '247 Patent, col. 9:49-53 In this mode, the safety selector is configured to prevent the disconnector from catching the hammer, which permits the user to fire again without first manually releasing the trigger '247 Patent, abstract
• Technical Importance: This technology consolidates standard semi-automatic operation and an accelerated forced-reset function into a single, user-selectable assembly, a notable feature in the firearm accessories market Compl. ¶22

Key Claims at a Glance

• The complaint asserts infringement of independent Claim 15 Compl. ¶31 Compl. ¶33
• The essential elements of Claim 15 include:
  • A firearm trigger mechanism comprising a hammer, a trigger member, a disconnector, and a cam.
  • The cam is movable between a first position (standard mode) and a second position ("forced reset" mode), where in the second position, a "cam lobe forces said trigger member towards said set position."
  • In the "standard semi-automatic mode," the disconnector hook catches the hammer hook, requiring a user to "manually release said trigger member to free said hammer."
  • In the "forced reset semi-automatic mode," the cam is in the second position, and the rearward movement of the bolt carrier causes the "disconnector hook [to be] prevented from catching said hammer hook."
• The complaint reserves the right to assert other claims Compl. ¶31

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

The Invention Explained

• Problem Addressed: The patent background identifies a compatibility problem when installing a forced reset trigger designed for an AR15-pattern firearm into a larger AR10-pattern firearm '784 Patent, col. 1:21-32 Due to different dimensions, a trigger-locking member long enough to be actuated by the AR10's bolt carrier would then interfere with a forward portion of that same carrier as it cycles to the rear, rendering the device inoperable '784 Patent, col. 1:39-44
• The Patented Solution: The patent proposes a locking device with an "upwardly extending deflectable portion that is separately movable relative to the body portion" '784 Patent, claim 1 This design allows the extension to remain rigid to be actuated by the bolt carrier upon returning to battery, but also allows it to "give way (i.e., deflect or fold)" to permit the forward portion of the bolt carrier to pass over it during rearward cycling without interference '784 Patent, col. 2:5-7 '784 Patent, FIG. 7
• Technical Importance: The invention provides a method for adapting forced reset trigger technology to firearm platforms with geometric constraints that would otherwise prevent its implementation Compl. ¶23

Key Claims at a Glance

• The complaint asserts infringement of independent Claim 1 Compl. ¶45 Compl. ¶47
• The 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" position and a second "unlocked" position.
  • The locking member has an "upward extension portion" that makes "actuating contact" with the bolt carrier to move it to the second position.
  • The locking member comprises a "movably supported" body portion and an "upwardly extending deflectable portion that is separately movable relative to the body portion" between an extended and a deflected position.
• The complaint reserves the right to assert other claims Compl. ¶45

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

• Technology Synopsis: This patent describes a safety mechanism comprising a cam selector, a lever, and a trigger, which can operate in three modes: standard semi-automatic, safe, and an "active reset" mode Compl. ¶24 '538 Patent, abstract The cam selector has first and second recesses on its bottom side that interact with a "first trigger tail portion"; in the active reset mode, the cam selector is configured to allow the trigger tail to engage the second recess and be "moved down by a cam portion of the second recess when the cam selector rotates" '538 Patent, abstract
• Asserted Claims: Claim 1 Compl. ¶59
• Accused Features: The accused "Super Safety" is alleged to include a "dual mode cam selector" with safe, active reset, and passive reset modes that operates on a trigger, corresponding to the claimed invention Compl. p. 28 Compl. p. 33

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

• Technology Synopsis: The patent claims a firearm trigger mechanism operable in both a "standard semi-automatic mode" and a "forced reset semi-automatic mode" Compl. ¶22 '159 Patent, claim 1 The mechanism includes a hammer, trigger, disconnector, and a cam. In the forced reset mode, rearward movement of the bolt prevents the disconnector hook from holding the hammer, allowing the user to fire again without a manual trigger release '159 Patent, claim 1
• Asserted Claims: Claim 1 Compl. ¶73
• Accused Features: The "Super Safety" is alleged to be a trigger mechanism that operates in both a standard semi-automatic mode and a "forced reset" semi-automatic mode, using a cam to force the trigger to its set position Compl. p. 41 Compl. p. 46

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

• Technology Synopsis: The patent describes a forced reset trigger mechanism with a hammer, disconnector, trigger member, and a safety selector movable between a "standard semi-automatic position" and a "forced reset semi-automatic position" Compl. ¶25 '403 Patent, claim 38 In the standard mode, rearward pressure on the trigger must be reduced to fire again after a cycle, while in the forced reset mode, it does not '403 Patent, claim 38
• Asserted Claims: Claim 38 Compl. ¶87
• Accused Features: The accused "Super Safety" is alleged to be a safety selector that is movable between a standard semi-automatic position and a "forced reset" semi-automatic position, with corresponding functionality Compl. p. 55

III. The Accused Instrumentality

Product Identification

• The accused product is the "3-Position Super Safety," also referred to as "the Super Safety" Compl. ¶27

Functionality and Market Context

• The "Super Safety" is a firearm trigger mechanism alleged to embody the technology of the Asserted Patents Compl. ¶27 It is described as being able to operate in a "disconnector mode," similar to a standard AR-15 trigger, as well as a "forced reset" semi-automatic mode Compl. ¶28 A user can allegedly switch between safe, standard semi-automatic, and forced reset modes by moving a safety selector Compl. ¶28
• The complaint alleges the Defendant makes, uses, sells, or offers for sale the Infringing Device, at least through social media platforms like Facebook Compl. ¶27 Compl. ¶29 A photograph provided in the complaint depicts a large quantity of what are alleged to be components of the accused device, offered for sale in a Facebook group Compl. p. 7

IV. Analysis of Infringement Allegations

U.S. Patent No. 12,038,247 Infringement Allegations

Claim Element (from Independent Claim 15)	Alleged Infringing Functionality	Complaint Citation	Patent Citation
a hammer having a sear catch and a hook for engaging a disconnector...	The accused Super Safety is installed with a hammer that has a sear catch and a hook for engaging a disconnector.	¶33	col. 8:51-53
a trigger member having a sear...	The accused Super Safety is installed with a trigger member that has a sear.	¶33	col. 8:59-60
said disconnector having a hook for engaging said hammer...	The accused Super Safety includes a disconnector with a hook for engaging the hammer.	¶33	col. 9:1-2
and a cam having a cam lobe and adapted to be movably mounted...	The accused Super Safety has a cam with a cam lobe and lever that is adapted to be movably mounted.	¶33	col. 8:7-8
said cam being 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 cam is movable, and in its second ("forced reset") position, the cam lobe mechanically moves the trigger member toward the set position.	¶33	col. 9:49-53
whereupon in a standard semi-automatic mode, ...said disconnector hook catches said hammer hook, ...a user must manually release said trigger member to free said hammer...	In standard mode, rearward bolt carrier movement causes the disconnector hook to catch the hammer hook, requiring the user to manually release the trigger to fire again.	¶33	col. 9:36-48
whereupon in a forced reset semi-automatic mode, ...said disconnector hook is prevented from catching said hammer hook, ...the user can pull said trigger member to fire the firearm.	In forced reset mode, the cam is in the second position and mechanically moves the trigger to the set position, while the disconnector hook is prevented from catching the hammer hook.	¶33	col. 9:28-36

U.S. Patent No. 12,031,784 Infringement Allegations

Claim Element (from Independent Claim 1)	Alleged Infringing Functionality	Complaint Citation	Patent Citation
a locking member that is movable between a first position in which it locks a trigger against pulling movement and a second position where it does not restrict movement...	The accused Super Safety operates as a locking member and is movable between a first (locked) position and a second (unlocked) position.	¶47	col. 1:53-58
and including a generally upward extension portion configured to make actuating contact with a surface of the bolt carrier,	The accused Super Safety has an upward extending portion (lever arm) configured to make actuating contact with a surface of the bolt carrier. A plaintiff-generated rendering depicts this contact (Compl. p. 23).	¶47	col. 1:59-62
such actuating contact causing the locking member to move from the first position to the second position,	The actuating contact between the bolt carrier and the lever arm causes the locking member to move from the locked to the unlocked position.	¶47	col. 6:1-3
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...	The complaint does not explicitly separate the accused locking member into a "body portion" and a "deflectable portion," but alleges the device as a whole functions as an extended trigger member locking device. The analysis may depend on how the accused device achieves deflection.	¶47	col. 1:62-66

Identified Points of Contention

• Scope Questions: For the '784 Patent, a central issue may be the construction of a "deflectable portion that is separately movable relative to the body portion." The patent specification describes embodiments with a distinct hinge and pivot pin '784 Patent, FIG. 2 The infringement analysis may turn on whether the accused device contains a similarly "separately movable" component or achieves a similar result through a different structure, potentially raising questions of equivalence.
• Technical Questions: For the '247 Patent, a key evidentiary question may be whether the accused device's cam "forces" the trigger member to the set position as claimed. The dispute could focus on the nature of the mechanical interaction and whether it constitutes "forcing" in the sense required by the claim. Additionally, the mechanism by which the disconnector hook is "prevented" from catching the hammer hook in the forced reset mode will likely be a point of technical scrutiny.

V. Key Claim Terms for Construction

For the '247 Patent

• The Term: "forces" (from Claim 15: "said cam lobe forces said trigger member towards said set position")
• Context and Importance: This term defines the core action of the cam in the "forced reset" mode. The outcome of the infringement analysis may depend on whether the mechanical action of the accused device meets the active, causative standard implied by "forces," as opposed to merely guiding or assisting the trigger's return.
• Intrinsic Evidence for Interpretation:
  • Evidence for a Broader Interpretation: The specification describes the cam lobe "acts upon the cam follower... to pivot the trigger member" '247 Patent, col. 9:51-53, language which could be argued to encompass any mechanical action that results in the trigger pivoting.
  • Evidence for a Narrower Interpretation: The use of "forces" in both the abstract and the claims suggests an active, non-optional mechanical operation that ensures the trigger is reset, distinguishing it from a standard spring-driven reset. Practitioners may argue this term requires a positive, direct mechanical linkage that overcomes any user-applied resistance on the trigger.

For the '784 Patent

• The Term: "separately movable" (from Claim 1: "an upwardly extending deflectable portion that is separately movable relative to the body portion")
• Context and Importance: This term is central to the patent's proposed solution for adapting a forced reset trigger to different firearm platforms. Infringement will likely depend on whether the accused locking member has a part that is "separately movable" from its main body, as construed by the court.
• Intrinsic Evidence for Interpretation:
  • Evidence for a Broader Interpretation: The claim language itself combines "deflectable" and "separately movable," which could support a construction where a single, integrated component with a flexible or bending portion meets the limitation, as one part (the tip) moves while the base does not.
  • Evidence for a Narrower Interpretation: The patent's detailed embodiments illustrate this concept with a distinct "foldable extension portion 22 that pivots on... a transverse pivot pin 24 relative to the locking bar body 26" '784 Patent, col. 3:41-44 '784 Patent, FIG. 2 This may support a narrower construction requiring two distinct components joined by a pivot or hinge.

VI. Other Allegations

• Indirect Infringement: The complaint alleges both induced and contributory infringement for all asserted patents. Inducement is based on allegations of Defendant "encouraging, advertising, promoting, and instructing others to use" the accused device Compl. ¶34 Compl. ¶48 Contributory infringement is based on allegations that the components of the accused device are "specially designed and adapted" for infringing use and are "not suitable for substantial noninfringing use" Compl. ¶36 Compl. ¶50
• Willful Infringement: Willfulness is alleged for all asserted patents. The complaint bases this on Defendant's alleged knowledge of the patents "at least through the service and filing of Plaintiffs' Complaint," suggesting a primary basis in post-suit conduct Compl. ¶37 Compl. ¶51 The pleading also includes broader "known or should have known" language that may suggest an allegation of pre-suit knowledge.

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

• A core issue will be one of definitional scope: can the term "separately movable" from the '784 Patent, which is illustrated in the specification with a multi-part, hinged component, be construed to read on the specific single- or multi-part construction of the accused "Super Safety" locking member?
• A second central issue will be one of functional operation: does the accused device's cam mechanism "force" the trigger to reset and does its safety selector "prevent" the disconnector from engaging in the precise manner required by the claims of the '247 and '159 patents, or is there a functional difference that may place the conduct outside the scope of literal infringement?
• A broader strategic question will be one of patent differentiation: with five patents asserted against a single device, the case will likely require a detailed examination of the distinct technical contribution claimed by each patent and how each of those allegedly separate inventions is embodied in the accused product.