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 (an individual) (Mississippi)
  • Plaintiff's Counsel: Mockbee Ellis, PA.; Wood Herron & Evans LLP; Fish & Richardson P.C.
• Case Identification: 3:25-cv-00454, S.D. Miss., Filed 07/21/2026
• Venue Allegations: Venue is alleged to be proper based on the Defendant residing in the district and having a regular and established place of business there.
• Core Dispute: Plaintiffs allege that Defendant's "3-Position Super Safety" device, a firearm trigger component, infringes five U.S. patents related to "forced reset" trigger mechanisms.
• Technical Context: The technology concerns aftermarket trigger mechanisms for semi-automatic firearms, such as the AR-15 platform, which use the energy from a fired round to mechanically reset the trigger, potentially enabling a higher rate of fire than standard mechanisms.
• Key Procedural History: The operative pleading is a Third Amended Complaint, suggesting a case with a developing procedural posture and potentially refined infringement theories since its initial filing.

Case Timeline

Date	Event
2021-11-05	Earliest Priority Date for '784 Patent
2022-09-08	Earliest Priority Date for '247, '159, and '403 Patents
2023-07-19	Accused Product Guide Publication Date
2023-12-04	Earliest Priority Date for '538 Patent
2024-05-02	Accused Product Offered for Sale on Social Media
2024-07-09	U.S. Patent No. 12,031,784 Issues
2024-07-16	U.S. Patent No. 12,038,247 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
2026-07-21	Third Amended Complaint Filed

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 describes the desire among some shooters to increase the rate of fire of semi-automatic firearms Compl. ¶22 It notes that prior art devices to achieve this either required extensive modifications to the firearm, such as a modified bolt carrier, or relied on techniques like "bump firing," which can be inconsistent. '247 Patent, col. 1:41-68
• The Patented Solution: The patent discloses a "drop-in" trigger module for AR-pattern firearms that provides a user-selectable "forced reset" capability without requiring a modified bolt carrier '247 Patent, col. 2:16-29 The mechanism employs a pivoting cam that is actuated by the standard reciprocating motion of the bolt carrier to mechanically force the trigger back to its reset position '247 Patent, col. 2:47-54 A key feature is a three-position safety selector that, in the "forced reset" mode, prevents the disconnector from catching the hammer, allowing the cam-driven reset to complete the cycle and permit an immediate subsequent shot '247 Patent, col. 3:1-11
• Technical Importance: The invention provides a method for achieving an accelerated rate of semi-automatic fire through a self-contained, user-installable module, broadening the accessibility of this functionality for standard firearms. Compl. ¶22

Key Claims at a Glance

• The complaint asserts independent Claim 15 Compl. ¶31
• The essential elements of Claim 15 include:
  • A firearm trigger mechanism with standard components: a hammer, a trigger member, and a disconnector.
  • A movable cam with a cam lobe.
  • A safety selector movable between positions for a "standard semi-automatic" mode and a "forced reset semi-automatic" mode.
  • In the standard mode, the disconnector catches the hammer after firing, requiring the user to manually release the trigger to reset.
  • In the forced reset mode, the cam lobe forces the trigger member to its set position, and the safety selector prevents the disconnector from catching the hammer, allowing the user to fire again without manually releasing the trigger.
• The complaint alleges infringement of "one or more claims... including but not limited to Claim 15," reserving 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 explains that forced reset trigger mechanisms designed for the AR-15 platform are often incompatible with other platforms, like the AR-10, due to different internal dimensions. Specifically, a locking bar tall enough to be actuated by an AR-10's bolt carrier would physically interfere with another part of the carrier as it cycles rearward, rendering the device inoperable '784 Patent, col. 1:20-44
• The Patented Solution: The invention is a trigger locking device that incorporates a "deflectable" or hinged upward extension '784 Patent, col. 2:4-11 This extension is rigid in one direction, allowing it to be actuated by the bolt carrier as it moves forward into battery, which unlocks the trigger '784 Patent, col. 6:1-6 However, the extension is designed to fold or "give way" in the opposite direction, allowing the forward part of the bolt carrier to pass over it without interference during its rearward cycle '784 Patent, col. 4:26-37 This one-way action is illustrated in the patent's figures, such as Figure 7.
• Technical Importance: This design adapts the forced-reset trigger concept to firearm platforms with different internal geometries, overcoming the spatial constraints that made prior designs incompatible. '784 Patent, col. 1:20-44

Key Claims at a Glance

• The complaint asserts independent Claim 1 Compl. ¶45
• 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 a "body portion" and an "upwardly extending deflectable portion."
  • The deflectable portion is "separately movable relative to the body portion" between an extended and a deflected position.
• The complaint alleges infringement of "one or more claims... including but not limited to Claim 1," reserving the right to assert other claims Compl. ¶45

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

• Technology Synopsis: The patent describes a safety mechanism centered on a multi-mode cam selector. The selector features a top-side longitudinal slot to receive a lever and two distinct recesses on its bottom side that interact with a "trigger tail portion" '538 Patent, abstract This configuration allows the user to select between a standard semi-automatic mode, a safe mode, and an "active reset" mode where the cam forces the trigger tail down to reset the mechanism Compl. ¶24 '538 Patent, abstract
• Asserted Claims: Claim 1 Compl. ¶59
• Accused Features: The accused "Super Safety" is alleged to infringe by incorporating a dual-mode cam selector that provides for safe, standard semi-automatic ("passive reset"), and "active reset" modes Compl. ¶61, p. 33

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

• Technology Synopsis: This patent, related to the '247 patent, describes a trigger mechanism for a firearm with a reciprocating bolt that is operable in a standard semi-automatic mode and a "forced reset" semi-automatic mode '159 Patent, abstract The invention uses the interaction between the bolt, a cam, a disconnector, and the trigger to achieve the two distinct operational modes Compl. ¶22
• Asserted Claims: Claim 1 Compl. ¶73
• Accused Features: The accused "Super Safety" is alleged to operate in both a standard semi-automatic mode and a "forced reset" semi-automatic mode, thereby infringing the '159 Patent Compl. ¶75, p. 41

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

• Technology Synopsis: This patent claims a forced reset trigger mechanism comprising a hammer, disconnector, trigger member, and a safety selector. The safety selector is movable between a "standard semi-automatic position" and a "forced reset semi-automatic position" '403 Patent, cl. 38 The invention focuses on the sequence of operations in each mode, where in the standard mode the user must reduce pressure to reset the trigger, and in the forced reset mode the user does not Compl. ¶25
• 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 and a forced reset position, matching the functionality described in the patent Compl. ¶89, p. 55

III. The Accused Instrumentality

Product Identification

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

Functionality and Market Context

• The complaint alleges the Super Safety is a firearm component that allows a user to switch between three modes of operation: safe, standard semiautomatic, and "forced reset" semiautomatic Compl. ¶28 The complaint provides a screenshot of a social media post allegedly from the Defendant offering to sell "polished 3D printed kits" of the device, suggesting the product may be distributed as a set of components for end-user assembly Compl. p. 7 The complaint alleges the Defendant sells or offers for sale the Infringing Device via Facebook and private Facebook groups Compl. ¶29

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 firearm trigger mechanism comprising: a hammer having a sear catch and a hook for engaging a disconnector... a trigger member having a sear... said disconnector having a hook...	The Super Safety is installed as part of a trigger mechanism that includes a hammer, trigger member, and disconnector.	¶33, p. 8-11	col. 2:38-46
and a cam having a cam lobe and adapted to be movably mounted in the fire control mechanism pocket,	The Super Safety device is a cam with a cam lobe and lever that is movably mounted in the fire control mechanism pocket. A photograph in the complaint shows the standalone Super Safety component (Compl. ¶33, p. 12).	¶33, p. 12	col. 2:47-49
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 position ("forced reset" mode), the cam lobe mechanically moves the trigger member toward the set position. The complaint provides a rendering illustrating this action (Compl. ¶33, p. 13).	¶33, p. 12-13	col. 2:50-54
whereupon in a standard semi-automatic mode, said cam is in said first position, rearward movement of the bolt carrier causes rearward pivoting of said hammer such that said disconnector hook catches said hammer hook,	In standard mode, the cam is in a first position, and the bolt carrier's movement causes the hammer to pivot and be caught by the disconnector hook.	¶33, p. 14	col. 2:55-62
whereupon in a forced reset semi-automatic mode, said cam is in said second position, rearward movement of the bolt carrier causes rearward pivoting of said hammer such that said disconnector hook is prevented from catching said hammer hook,	In "forced reset" mode, the cam is in the second position, and the disconnector hook is prevented from catching the hammer hook, allowing the trigger to be mechanically reset by the cam.	¶33, p. 15-16	col. 3:1-6

Identified Points of Contention

• Scope Questions: A potential issue may be whether the term "safety selector," as required by the claim to prevent the disconnector from catching the hammer, reads on the accused device. The analysis will likely focus on whether the accused selector performs this specific function in the claimed manner.
• Technical Questions: A key question will be whether the specific mechanical interactions alleged in the complaint occur as described. For instance, what evidence demonstrates that the accused device's cam, in its second position, functionally "prevents" the disconnector from catching the hammer hook, as opposed to merely bypassing it or rendering its action moot through the forced reset.

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

Claim Element (from Independent Claim 1)	Alleged Infringing Functionality	Complaint Citation	Patent Citation
In a forced rest trigger mechanism, an extended trigger member locking device, comprising: 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 Super Safety is identified as an extended trigger member locking device that operates as a locking member, movable between a locked (first) position and an unlocked (second) position.	¶47, p. 20-22	col. 2:52-58
the locking member configured to be movably supported by a frame and including a generally upward extension portion configured to make actuating contact with a surface of a bolt carrier,	The Super Safety is movably supported by the firearm's frame (lower receiver) and has an upward extending lever arm configured to make contact with the bolt carrier surface.	¶47, p. 22-23	col. 2:58-62
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 between an extended position and a deflected position.	The Super Safety allegedly has a body portion and an upward extending lever arm. The complaint's theory appears to map this lever arm to the "separately movable... deflectable portion" of the claim. A plaintiff-generated rendering shows this lever arm making contact with the bolt carrier (Compl. ¶47, p. 23).	¶47, p. 23	col. 2:62-67

Identified Points of Contention

• Scope Questions: The central issue for this patent will likely be the construction of "separately movable relative to the body portion." The question for the court will be whether this language requires a distinct component pivoting on a pin (as shown in one patent embodiment) or if it can be construed to cover a single, integrated component with a portion designed to flex or bend.
• Technical Questions: Evidentiary questions may arise regarding how the accused device's "lever arm" actually functions. Does it merely flex under pressure from the bolt carrier, or does it operate with a distinct, separate motion relative to its base? The degree and nature of this movement will be a critical factual question.

V. Key Claim Terms for Construction

The Term: "safety selector" ('247 Patent, Claim 15)

• Context and Importance: Claim 15 requires that in the "forced reset" mode, the "safety selector" prevents the disconnector from catching the hammer. The construction of this term is critical because it links the selector's position to a specific mechanical function-disabling the disconnector. The case may turn on whether the accused device's selector performs this function in the claimed way.
• Intrinsic Evidence for Interpretation:
  • Evidence for a Broader Interpretation: The claim language itself broadly recites a "safety selector adapted to be mounted...to pivot between" different positions. This could support a functional definition, covering any selector that achieves the claimed outcome of preventing the disconnector's engagement in one of its positions.
  • 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" '247 Patent, col. 8:55-62 A defendant may argue that "safety selector" should be construed to require a structure that physically blocks the disconnector's pivot, consistent with this described embodiment.

The Term: "separately movable" ('784 Patent, Claim 1)

• Context and Importance: This term defines the key feature of the '784 patent: the deflectable portion of the locking member. The infringement analysis will depend on whether the accused device's lever arm is "separately movable" from its body. Practitioners may focus on this term because it appears to be the primary point of novelty for adapting the technology to different firearm platforms.
• Intrinsic Evidence for Interpretation:
  • Evidence for a Broader Interpretation: The Summary of the Invention states the invention "provides a deflectable extension...that...deflects or folds" '784 Patent, col. 2:7-9 The word "deflects" could suggest that flexing of a resilient, one-piece component is within the scope of the invention, not just the pivoting of a separate component.
  • Evidence for a Narrower Interpretation: The primary embodiment described in detail features a "foldable extension portion 22 that pivots on, for example a transverse pivot pin 24 relative to the locking bar body 26" '784 Patent, col. 3:40-43 This language, along with Figures 2-4, explicitly discloses a multi-part assembly with a pin, which could support an argument that "separately movable" requires a distinct, articulated component.

VI. Other Allegations

• Indirect Infringement: The complaint alleges both induced and contributory infringement for all asserted patents. Inducement is based on allegations that the Defendant encourages, advertises, and instructs customers on how to use the infringing device Compl. ¶34 Compl. ¶48 Compl. ¶62 Compl. ¶76 Compl. ¶90 Contributory infringement is based on allegations that the components of the "Super Safety" are specially designed for use in an infringing manner and are not suitable for substantial non-infringing use Compl. ¶36 Compl. ¶50 Compl. ¶64 Compl. ¶78 Compl. ¶92
• Willful Infringement: The complaint alleges willful infringement for all asserted patents. The basis for willfulness is the allegation that the Defendant knew or should have known of its infringement, at least as of the filing of the complaint, and could not have reasonably believed its actions were non-infringing or that the patents were invalid Compl. ¶37 Compl. ¶51 Compl. ¶65 Compl. ¶79 Compl. ¶93

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

• A core issue will be one of mechanical operation and scope: Does the accused "3-Position Super Safety" achieve its "forced reset" function by "preventing the disconnector hook from catching the hammer hook" via the "safety selector" as required by claims like Claim 15 of the '247 patent, or does it operate via a different, non-infringing mechanical pathway?
• A central question of claim construction will be: Can the term "separately movable" from the '784 patent, which was devised to solve a dimensional-interference problem, be construed to cover the single-piece lever arm of the accused device, or is its meaning limited by the patent's principal embodiment showing a distinct, pinned component?
• A key evidentiary question will relate to the nature of the accused product: As the complaint alleges the sale of "3D printed kits," the case may turn on evidence of the Defendant's actions and intent regarding the assembly and final use of these components by end-users, which is central to the claims of indirect and willful infringement.