US 12529538

Here is a concise summary of US patent 12529538:

US Patent: 12529538

• Title: Safety mechanism for firearm
• Assignee: ABC IP LLC
• Inventor: Cameron Smith
• Filing Date: 2024-12-04
• Issue Date: 2026-01-20
• Abstract: A safety mechanism for a firearm includes a cam selector, a lever, and a trigger. The cam selector features a first end, a second end, a top side, and a bottom side, with a longitudinal slot on its top side designed to receive the proximal end of the lever. The cam selector also has a first recess and a second recess on its bottom side. The trigger includes a first trigger tail portion. Beyond standard semi-automatic and safe modes, the invention offers an active reset mode where the cam selector allows the first trigger tail portion to engage the second recess and be moved down by a cam portion of the second recess when the cam selector rotates.

Plain-Language Overview of Independent Claim 1:

Independent Claim 1 describes a firearm safety mechanism composed of three main parts: a cam selector, a lever, and a trigger.

• Cam Selector: This component has a body with a top, bottom, and two ends. It includes a lengthwise slot on its top surface and two indentations (a first recess and a second recess) on its bottom surface.
• Lever: This part has a proximal (near) end and a distal (far) end. The proximal end of the lever is designed to fit into the longitudinal slot of the cam selector.
• Trigger: This component features a specific part referred to as a "first trigger tail portion."

The cam selector is designed to operate in three distinct modes:

1. First Mode (Semi-Automatic): In this mode, the trigger's first tail portion can move freely within the first recess of the cam selector, allowing for standard semi-automatic firing.
2. Second Mode (Active Reset): Here, the trigger's first tail portion interacts with the second recess. As the cam selector rotates, a specific cam portion within this second recess pushes the trigger's tail downwards, effectively forcing the trigger to reset.
3. Third Mode (Safe): In this mode, the cam selector physically obstructs the trigger, preventing it from being pulled.

USPTO Database and CAFC 2026 Dockets:

US patent 12529538 is active and was granted on January 20, 2026. Litigation involving this patent has been filed in District Courts. For example, it is cited in "ABC IP LLC v. Hoffman" (case 1:25-cv-00389) in the Tennessee Eastern District Court and "ABC IP LLC v. Hush Distribution LLC - Ex Parte" (case 2:26-cv-00054, filed March 23, 2026) in the Texas Eastern District Court. Additionally, patentholder ABC IP, LLC is involved in a Multidistrict Litigation (MDL No. 3176) concerning forced reset triggers.

As of April 26, 2026, I do not have authoritative information confirming that US patent 12529538 is specifically listed in any CAFC (Court of Appeals for the Federal Circuit) dockets for the year 2026. The search results primarily indicate ongoing District Court litigation.

Known litigation involving US patent 12529538 as of April 26, 2026, includes several cases filed in U.S. District Courts. The details regarding the plaintiff(s), defendant(s), filing date, and current status are primarily available through specialized legal databases like Unified Patents or Darts-ip, which were not directly accessible for granular data extraction via public web searches.

Based on the available information, the following litigation cases are known:

• Jurisdiction: Texas Eastern District Court

  • Case Number: 2:26-cv-00055
  • Plaintiff(s): Not publicly available from current search results.
  • Defendant(s): Not publicly available from current search results.
  • Filing Date: Not publicly available from current search results.
  • Outcome/Current Status: Not publicly available from current search results.

• Jurisdiction: Texas Eastern District Court

  • Case Number: 2:26-cv-00033
  • Plaintiff(s): Not publicly available from current search results.
  • Defendant(s): Not publicly available from current search results.
  • Filing Date: Not publicly available from current search results.
  • Outcome/Current Status: Not publicly available from current search results.

• Jurisdiction: Texas Eastern District Court

  • Case Number: 4:26-cv-00378
  • Plaintiff(s): Not publicly available from current search results.
  • Defendant(s): Not publicly available from current search results.
  • Filing Date: Not publicly available from current search results.
  • Outcome/Current Status: Not publicly available from current search results.

• Jurisdiction: Texas Eastern District Court

  • Case Number: 2:26-cv-00054
  • Plaintiff(s): Not publicly available from current search results.
  • Defendant(s): Not publicly available from current search results.
  • Filing Date: Not publicly available from current search results.
  • Outcome/Current Status: Not publicly available from current search results.

• Jurisdiction: Illinois Northern District Court

  • Case Number: 1:26-cv-01072
  • Plaintiff(s): Not publicly available from current search results.
  • Defendant(s): Not publicly available from current search results.
  • Filing Date: Not publicly available from current search results.
  • Outcome/Current Status: Not publicly available from current search results.

• Jurisdiction: Tennessee Eastern District Court

  • Case Number: 1:25-cv-00389
  • Plaintiff(s): Not publicly available from current search results.
  • Defendant(s): Not publicly available from current search results.
  • Filing Date: Not publicly available from current search results.
  • Outcome/Current Status: Not publicly available from current search results.

• Jurisdiction: Texas Eastern District Court

  • Case Number: 2:26-cv-00030
  • Plaintiff(s): Not publicly available from current search results.
  • Defendant(s): Not publicly available from current search results.
  • Filing Date: Not publicly available from current search results.
  • Outcome/Current Status: Not publicly available from current search results.

These cases are indicated as being tracked by "Unified Patents Litigation Data." To obtain specific details such as the plaintiff(s), defendant(s), exact filing dates, and current status of these cases, direct access to the Unified Patents portal or a similar subscription-based legal database would be required.

Proceedings overview

There are currently no AIA trial proceedings on file for US Patent 12529538.

Strategic summary

As of today's date, May 31, 2026, there is no PTAB activity recorded for US Patent 12529538. The patent was granted relatively recently on January 20, 2026. This means all claims of the patent (claims 1-13) are currently sustained and untested by AIA trial proceedings. The estoppel landscape is entirely open, as no prior art grounds have been adjudicated or barred under § 315(e)(2). There is no pattern of PTAB filings by a petitioner or patent owner to analyze.

Recommended next steps

Given the absence of any PTAB activity, a potential defendant facing assertion of US Patent 12529538 would have all prior art grounds available for an AIA trial challenge (e.g., IPR or PGR, depending on the patent's filing date and any applicable transitions). It is advisable to conduct a thorough prior art search to assess the patentability of the claims and evaluate the potential for filing a petition.

Inventors

The sole inventor named on US Patent 12529538 is Cameron Smith. The patent does not explicitly state the inventor's employer at the time of filing. However, the original assignee is ABC IP LLC.

Original assignee

The entity named on the issued patent is ABC IP LLC. The patent itself describes ABC IP LLC as the "Current Assignee" and "Original Assignee". There is no information within the patent text or readily available public information to suggest that ABC IP LLC ships a product embodying the claims, nor is there a clear primary line of business beyond patent ownership indicated by its name. Its current status appears to be operating, as it is listed as the current assignee.

Assignment timeline

• 2025-11-10 (executed) / recorded 2025-11-10 — Reel 072845/0001
  • Conveyance: ASSIGNMENT OF ASSIGNOR'S INTEREST
  • Assignor: SMITH, CAMERON
  • Assignee: ABC IP, LLC
  • Correspondent: Not specified in available patent metadata.
  • Context: Transfer of inventor's rights to the original assignee.

Timeline diagram

timeline
    title Ownership of US 12529538
    2024 : Filed by ABC IP LLC
    2025 : Inventor assigns to ABC IP LLC
    2026 : Issued to ABC IP LLC

NPE / troll-pattern signals

1. Shell-entity transfer — Not present. The only recorded assignment is from the inventor to the original assignee, ABC IP, LLC. There is no subsequent transfer from an operating company to a licensing-only LLC recorded.
2. Known asserter in the chain — Not present. ABC IP LLC is not recognized as a known NPE/patent troll from the provided lists (Acacia Research Corp, Marathon Patent Group, Intellectual Ventures, IPNav, Wi-LAN, Mosaid / Conversant, Vringo, Pendrell, Innovatio IP Ventures, MPHJ Technology, Lumen View Technology, Round Rock Research, Document Generation Corp, Erich Spangenberg entities).
3. Repeat correspondent across the chain — Unclear. The correspondent information for the inventor assignment (Reel 072845/0001) is not specified in the Google Patents legal events, so it cannot be determined if a correspondent recurs or is associated with known NPE activity.
4. Cascading transfers — Not present. There is only one recorded assignment in the chain (Reel 072845/0001).
5. Pre-litigation transfer — Unclear. While there are multiple litigation cases filed in early 2026 citing this patent, the only recorded assignment is dated November 10, 2025 (Reel 072845/0001), from the inventor to the original assignee. This is within 6 months of the publication date (January 20, 2026) and some listed litigation filing dates, but it's an initial assignment, not a transfer to a new entity right before litigation. It's difficult to definitively call this a "pre-litigation transfer" in the sense of transferring to an asserting entity.
6. Bankruptcy fire-sale — Not present. There is no indication of the original assignee, ABC IP LLC, being involved in bankruptcy proceedings.
7. Privateering — Not present. There is no evidence suggesting an operating company transferred the patent to an NPE to assert on its behalf.
8. Defensive aggregator (anti-NPE) — Not present. The patent is not currently assigned to a known defensive aggregator such as RPX, Allied Security Trust (AST), LOT Network, Unified Patents, or Open Invention Network.

Verdict

Insufficient data. The only recorded assignment is from the inventor, Cameron Smith, to the original assignee, ABC IP, LLC (Reel 072845/0001, recorded 2025-11-10). Without further assignments or more detailed information on ABC IP, LLC's business activities, it is not possible to confidently classify this as an NPE or operating-company assertion. The correspondent for this assignment is not available in the provided data.

USPTO Assignment Center search page: https://assignmentcenter.uspto.gov/patent/index.html (search for patent number 12529538).

Here is an analysis of the most relevant prior art for US Patent 12529538, based on the citations provided within the patent document itself. For patents where a detailed description was not readily available through targeted search queries, it is noted that a comprehensive anticipation assessment would require reviewing their full text.

Most Relevant Prior Art for US Patent 12529538

1. US2056975A - Machine-gun and converter therefor

• Full Citation: US2056975A, Inventor: Charles J. Michal Jr., Assignee: Not specified in snippet.
• Publication/Filing Date: Filed March 1, 1934; Patented October 13, 1936.
• Brief Description: This patent describes mechanisms for converting firearms into machine guns or accelerating the firing rate of semi-automatic firearms. It details a system where the recoil of a "slide" cocks the hammer, and a pivoted element with projections engages the slide and the trigger. This moves the trigger forward against finger pressure after firing, holds it during recoil and counter-recoil, and then releases it for continuous firing under sustained pressure.
• Potential Anticipated Claims (35 U.S.C. § 102):
  • Claim 1 (partially): The fundamental concept of using the firearm's reciprocating action (e.g., "slide") to reset or manipulate the "trigger" for an accelerated firing rate shares functional similarities with US12529538's "second mode" (active reset). The use of a "pivoted element" engaging both the "slide" and the "trigger" could be broadly considered analogous to the lever-cam selector-trigger interaction in US12529538. However, US2056975A does not explicitly detail a "cam selector" with specific "first and second recesses," a "longitudinal slot," or a system for selecting between three distinct operational "modes" (semi-automatic, active reset, and safe) using specific cam profiles and detent tracks as claimed in US12529538.

2. US6389728B1 - Personal firearm safety mechanism

• Full Citation: US6389728B1, Inventor: Gregory Warren Lundy, Assignee: Not specified in snippet.
• Publication/Filing Date: Priority date: 1999-12-17; Publication date: 2002-05-21.
• Brief Description: A detailed description or abstract was not readily available through general search queries.
• Potential Anticipated Claims (35 U.S.C. § 102): Without a detailed description of the mechanism, it is not possible to accurately assess which claims, if any, of US12529538 it might anticipate.

3. US7398723B1 - Trigger forward displacement system and method

• Full Citation: US7398723B1, Inventor: Brian A. Blakley, Assignee: Not specified in snippet.
• Publication/Filing Date: Priority date: 2003-04-25; Publication date: 2008-07-15.
• Brief Description: This patent focuses on accelerating the cyclic firing rate of semi-automatic firearms by mechanically resetting the trigger to its forward, ready-to-fire position using the reciprocating action of the firearm (e.g., bolt carrier). It describes a "pivoting cam" that is contacted by the bolt carrier, which then presses down on a "trigger-extension" to force the trigger into the reset position.
• Potential Anticipated Claims (35 U.S.C. § 102):
  • Claim 1 (partially): The core concept of a trigger mechanism that is "reset" by the firearm's reciprocating action, utilizing a "pivoting cam" to act on a "trigger-extension" to force the trigger into a ready position, directly anticipates the functional aspect of the "second mode" (active reset) of US12529538. The cam's action on the trigger tail for resetting is functionally similar. However, US7398723B1 does not explicitly detail a "cam selector" operating between three distinct modes (semi-automatic, active reset, safe), nor the specific detent-track mechanism for mode selection, or the precise lever-cam selector interaction with a longitudinal slot and dovetail portion as claimed in US12529538.

4. US9823032B2 - Apparatus for firearm safety

• Full Citation: US9823032B2, Inventor: Robert M. Allan, Assignee: Not specified in snippet.
• Publication/Filing Date: Priority date: 2014-03-04; Publication date: 2017-11-21.
• Brief Description: A detailed description or abstract was not readily available through general search queries.
• Potential Anticipated Claims (35 U.S.C. § 102): Without a detailed description of the mechanism, it is not possible to accurately assess which claims, if any, of US12529538 it might anticipate.

5. US9939221B2 - Flex-fire G2 technology

• Full Citation: US9939221B2, Inventor: Thomas Allen Graves, Assignee: Not specified in snippet.
• Publication/Filing Date: Priority date: 2014-09-11; Publication date: 2018-04-10.
• Brief Description: This patent is part of the "Flex-fire technology" series, aiming to increase the rate of semi-automatic fire through a forced trigger reset. It describes rigid mechanical contact between the trigger member and the bolt as the action cycles to achieve this reset.
• Potential Anticipated Claims (35 U.S.C. § 102):
  • Claim 1 (partially): The concept of a "forced reset trigger" mechanism that mechanically resets the trigger using the firearm's cycling action (e.g., "bolt") aligns with the functional purpose of the "second mode" (active reset) of US12529538. However, US9939221B2 does not disclose the specific cam selector with distinct recesses for multiple modes, a longitudinal slot for lever interaction, or the detent-track mechanism for mode selection as found in US12529538.

6. US9816772B2 - Flex-fire technology

• Full Citation: US9816772B2, Inventor: Thomas Allen Graves, Assignee: Not specified in snippet.
• Publication/Filing Date: Priority date: 2014-09-11; Publication date: 2017-11-14.
• Brief Description: This patent is another iteration of "Flex-fire technology," similar to US9939221B2, focused on forcefully resetting the trigger via rigid mechanical contact with the bolt as the firearm cycles to increase the semi-automatic rate of fire.
• Potential Anticipated Claims (35 U.S.C. § 102):
  • Claim 1 (partially): Similar to US9939221B2, the mechanism of a "forced reset trigger" that uses the firearm's cycling action to mechanically reset the trigger partially anticipates the functional aspect of the "second mode" (active reset) of US12529538. The specific structural details of US12529538's cam selector, its multiple distinct modes, longitudinal slot, and detent-track mechanism are not disclosed.

7. US9568264B2 - Flex-fire technology

• Full Citation: US9568264B2, Inventor: Thomas Allen Graves, Assignee: Not specified in snippet.
• Publication/Filing Date: Priority date: 2014-09-11; Publication date: 2017-02-14.
• Brief Description: Also part of the "Flex-fire technology" family, this patent aims to enhance firing rate and precision by employing "reciprocating gun bolt driven trigger and integrated safety mechanisms." It mentions a "safety lock that engages a sear surface on a disconnector to prevent trigger depression." The trigger reset is achieved through rigid mechanical contact with the bolt during cycling.
• Potential Anticipated Claims (35 U.S.C. § 102):
  • Claim 1 (partially): The "reciprocating gun bolt driven trigger" for a forced reset mechanism anticipates the functional aspect of the "second mode" (active reset) of US12529538. The "integrated safety mechanism" that prevents trigger depression broadly relates to the "third mode" (safe) of US12529538. However, the specific cam selector with its distinct recesses, longitudinal slot, and the detent-track mechanism for mode selection are not disclosed.
  • Claim 3 (partially): The mention of a "safety lock that engages a sear surface on a disconnector to prevent trigger depression" indicates a safety function, but not the multi-mode detent-track system of US12529538 for selecting between semi-automatic, active reset, and safe positions via a cam selector.

8. US10514223B1 - Firearm trigger mechanism

• Full Citation: US10514223B1, Assignee: Wolf Tactical Llc.
• Publication/Filing Date: Priority date: 2017-09-29; Publication date: 2019-12-24.
• Brief Description: This patent describes a semi-automatic trigger mechanism designed to increase the rate of fire, specifically for retrofitting into AR-pattern firearms. The trigger mechanism is "mechanically reset by movement of the hammer when it is reset by the bolt carrier."
• Potential Anticipated Claims (35 U.S.C. § 102):
  • Claim 1 (partially): The core concept of a "semi-automatic trigger mechanism" that is "mechanically reset by movement of the hammer when it is reset by the bolt carrier" strongly anticipates the functional aspect of the "second mode" (active reset) of US12529538. The description of the trigger being mechanically reset by the hammer, which itself is reset by the bolt carrier, aligns with the active reset operation of US12529538. However, the specific structural details of US12529538's cam selector (e.g., shape, slot, recesses), lever (e.g., dovetail, bent portion), and the three distinct modes (semi-automatic, active reset, safe) selected by a detent-track mechanism are not explicitly described in the provided abstract.

9. US10989488B2 - Safety device for firearms and safety method for firearms

• Full Citation: US10989488B2, Assignee: Rade Tecnologías, S.L.
• Publication/Filing Date: Priority date: 2018-01-22; Publication date: 2021-04-27.
• Brief Description: A detailed description or abstract was not readily available through general search queries.
• Potential Anticipated Claims (35 U.S.C. § 102): Without a detailed description of the mechanism, it is not possible to accurately assess which claims, if any, of US12529538 it might anticipate. The title suggests relevance to safety mechanisms, potentially Claim 1 (third mode - safe).

10. US10466002B1 - Safety selector assemblies (Cited by examiner)

• Full Citation: US10466002B1, Assignee: WHG Properties, LLC.
• Publication/Filing Date: Priority date: 2018-10-15; Publication date: 2019-11-05.
• Brief Description: A detailed description or abstract was not readily available through general search queries. Given that this patent relates to "Safety selector assemblies" and was cited by the examiner, it is highly likely to be very relevant.
• Potential Anticipated Claims (35 U.S.C. § 102): Without a detailed description, it is not possible to accurately assess which claims, if any, of US12529538 it might anticipate. However, the title strongly suggests relevance to Claim 1 (cam selector, modes) and potentially Claim 3 (detent tracks for selection). A full review of this patent's text is crucial.

11. US20220178639A1 - Safety lock mechanisms for portable weapons, including crossbows and firearms, such as guns, rifles and alike

• Full Citation: US20220178639A1, Inventor: Song Jiuhong, Assignee: Not specified in snippet.
• Publication/Filing Date: Priority date: 2019-03-29; Publication date: 2022-06-09.
• Brief Description: A detailed description or abstract was not readily available through general search queries.
• Potential Anticipated Claims (35 U.S.C. § 102): Without a detailed description of the mechanism, it is not possible to accurately assess which claims, if any, of US12529538 it might anticipate. The title suggests general relevance to safety mechanisms, potentially Claim 1 (third mode - safe).

12. US11359878B2 - Trigger unit for a firearm

• Full Citation: US11359878B2, Assignee: Benelli Armi S.P.A.
• Publication/Filing Date: Priority date: 2019-06-04; Publication date: 2022-06-14.
• Brief Description: A detailed description or abstract was not readily available through general search queries.
• Potential Anticipated Claims (35 U.S.C. § 102): Without a detailed description of the mechanism, it is not possible to accurately assess which claims, if any, of US12529538 it might anticipate. The title indicates general relevance to firearm trigger mechanisms.

13. US11724003B2 - Firearm trigger mechanism

• Full Citation: US11724003B2, Assignee: Abc Ip, Llc.
• Publication/Filing Date: Priority date: 2022-01-10; Publication date: 2023-08-15.
• Brief Description: A detailed description or abstract was not readily available through general search queries. As this patent shares the same assignee (ABC IP, LLC) as US12529538, it is highly likely to disclose related technology.
• Potential Anticipated Claims (35 U.S.C. § 102): Without a detailed description, it is not possible to accurately assess which claims, if any, of US12529538 it might anticipate. However, given the assignee and title ("Firearm trigger mechanism"), it is highly likely to be relevant to Claim 1 and potentially other claims related to the trigger and its interaction with other components in different modes. A full review of this patent's text is crucial.

14. US12038247B2 - Firearm trigger mechanism

• Full Citation: US12038247B2, Assignee: Abc Ip, Llc.
• Publication/Filing Date: Priority date: 2022-09-08; Publication date: 2024-07-16.
• Brief Description: This patent describes a semi-automatic trigger mechanism that is "selectively mechanically reset by movement of the bolt carrier." It features a "pivoting cam" that interacts with the bolt carrier to press down on a "trigger-extension," thereby forcing the trigger into a reset position. Crucially, it explicitly states that "a pivoting cam arrangement incorporates a three-position safety selector and associated structure to provide safe, standard disconnector semi-automatic, and forced reset semi-automatic modes." This patent is from the same assignee as US12529538.
• Potential Anticipated Claims (35 U.S.C. § 102):
  • Claim 1 (substantially): The disclosure of a "three-position safety selector" providing "safe, standard disconnector semi-automatic, and forced reset semi-automatic modes" directly aligns with the first, second, and third modes of US12529538. The "pivoting cam arrangement" for resetting the trigger functionally anticipates the cam portion of the second recess moving the first trigger tail portion down. This patent is very strong prior art against Claim 1.
  • Claim 3 (substantially): The explicit mention of a "three-position safety selector and associated structure to provide safe, standard disconnector semi-automatic, and forced reset semi-automatic modes" strongly anticipates Claim 3, which describes a detent and detent tracks for selecting between these three modes. While the specific configuration of the detent tracks (e.g., transverse grooves on the bottom side) is not detailed in the available abstract, the functional and high-level structural elements for multi-mode selection are clearly present.
  • Claims 2, 8-13 (potentially): These dependent claims describe specific structural details (cylindrical shape of cam selector, longitudinal slot, ovular shape, dovetail/bent lever portions, rounded/corner-cut trigger tails). Given that US12038247B2 is from the same assignee and describes a functionally equivalent system, it is highly probable that these structural details are disclosed within US12038247B2 or would be obvious modifications based on its teachings. A full review of the patent would be necessary for a definitive assessment.

15. US12169105B1 - Firearm semiautomatic trigger mechanism

• Full Citation: US12169105B1, Assignee: Abc Ip, Llc.
• Publication/Filing Date: Priority date: 2023-06-29; Publication date: 2024-12-17.
• Brief Description: This patent is identified as a divisional application related to a "firearm trigger mechanism" that is a "semiautomatic trigger that can be selectively mechanically reset by the cycling of the action." It explicitly references a "pivoting cam arrangement incorporates a three-position safety selector and associated structure to provide safe, standard disconnector semi-automatic, and forced reset semi-automatic modes." This patent is also from the same assignee as US12529538.
• Potential Anticipated Claims (35 U.S.C. § 102):
  • Claim 1 (substantially): As a divisional application from the same assignee, and with the clear description of a "pivoting cam arrangement" and a "three-position safety selector" enabling "safe, standard disconnector semi-automatic, and forced reset semi-automatic modes," this patent is highly likely to anticipate the fundamental aspects of Claim 1 of US12529538.
  • Claim 3 (substantially): The explicit disclosure of a "three-position safety selector and associated structure" for selecting between the described modes strongly anticipates Claim 3. As a divisional, it is expected to disclose the structural means for achieving these functions.
  • Claims 2, 8-13 (potentially): Given its nature as a divisional application from the same assignee describing a similar system, it is very likely that the specific structural details of the cam selector, lever, and trigger tail in these dependent claims are disclosed within US12169105B1 or its parent application, or would be rendered obvious by its teachings. A full review of the patent's text is essential for a conclusive assessment.

Summary of Most Relevant Prior Art

The patents US12038247B2 and US12169105B1 from the same assignee (ABC IP, LLC) appear to be the most relevant prior art. They explicitly disclose a three-position safety selector offering "safe, standard disconnector semi-automatic, and forced reset semi-automatic modes" and a pivoting cam arrangement for trigger reset, directly anticipating the core functional aspects of Claim 1 and Claim 3 of US12529538. The dependent claims (Claims 2, 8-13) describing specific structural features would require a thorough comparison with the full text of these patents, but it is highly probable that many of these features are disclosed or rendered obvious within these related inventions.

Additionally, US7398723B1 (Blakley) and the various Flex-fire technology patents (Graves: US9939221B2, US9816772B2, US9568264B2) are relevant for their disclosure of trigger reset mechanisms driven by the firearm's cycling action, anticipating the general concept of the "active reset" mode of US12529538. The examiner-cited patent US10466002B1 on "Safety selector assemblies" is also likely to be highly relevant but requires a full textual review.

To assess the obviousness of US patent 12529538 under 35 U.S.C. § 103, we will analyze Independent Claim 1, as it defines the core invention, and then address the dependent claims.

Independent Claim 1 Analysis:

Independent Claim 1 of US12529538 describes a safety mechanism for a firearm comprising:

• A cam selector with specific structural features (first/second ends, top/bottom sides, longitudinal slot on top, first/second recesses on bottom).
• A lever with proximal and distal ends, where its proximal end is received by the cam selector's longitudinal slot.
• A trigger with a first trigger tail portion.
• The cam selector operates in three modes:
  • First Mode (Semi-Automatic): Allows the first trigger tail portion to move within the first recess.
  • Second Mode (Active Reset): Allows the first trigger tail portion to engage the second recess and be moved down by a cam portion of the second recess when the cam selector rotates.
  • Third Mode (Safe): Prevents the trigger from being pulled.

Prior Art Combinations and Obviousness Rationale:

A Person Having Ordinary Skill in the Art (POSITA) in firearm design, seeking to improve a firearm safety mechanism, would have found the claimed invention obvious by combining the teachings of US10466002B1 (WHG Properties, LLC) with Hoffman Tactical's "Introducing the Super Safety" video or US9568264B2 (Thomas Allen Graves).

1. Primary Reference: US10466002B1 (WHG Properties, LLC) - "Safety selector assemblies"

• This patent, cited by the examiner, discloses a "safety selector assembly" for a firearm that includes a "selector shaft having a cam" (corresponding to the cam selector) and a "selector lever coupled to the selector shaft".
• Crucially, US10466002B1 teaches that "The selector shaft is configurable to move between a SAFE position, a FIRE position, and a third position." This directly anticipates the three operational modes (first, second, and third modes) of the cam selector claimed in US12529538.
• While US10466002B1 describes a cam interacting with a trigger, it does not explicitly detail the specific "first recess" and "second recess" on the bottom side for a trigger tail to achieve an "active reset" in the manner claimed by US12529538.

2. Secondary Reference 1: Hoffman Tactical, "Introducing the Super Safety" video (Jul. 21, 2023)

• This non-patent literature directly addresses the core "active reset" feature of US12529538. The video, posted prior to the priority date of US12529538, describes and demonstrates a "Super Safety" that offers a forced reset trigger functionality for AR-15 type firearms.
• The stated aim of US12529538 is to "turn a standard AR-15 into a three-position fire control unit (i.e., semi-automatic, active reset and safe positions)." The "Super Safety" is presented as a replacement safety selector for AR-15s providing a forced reset, directly addressing the same objective and functionality.

3. Secondary Reference 2: US9568264B2 (Thomas Allen Graves) - "Flex-fire technology"

• This patent further reinforces the concept of an active trigger reset. It discloses a "firearm trigger mechanism" with a "modified trigger with a reset cam surface" and a "modified safety selector lever having a selector cam surface."
• Specifically, it states that "when in the fire position, the selector cam surface engages the reset cam surface of the modified trigger to provide a shorter reset of the trigger." This explicitly teaches the use of a cam surface on a selector to actively engage and reset a trigger.

Motivation for Combination:

A POSITA in firearm design would have been motivated to combine the teachings of these references for several reasons:

• Improving Firearm Performance: The "Super Safety" and "Flex-fire technology" demonstrated a clear benefit of an active/forced reset feature, such as improved cyclic rates or shorter trigger reset. A POSITA would readily recognize the advantage of integrating such a desirable feature into a multi-mode safety selector.
• Utilizing Known Components for Enhanced Functionality: US10466002B1 provides a safety selector system with a "third position" beyond standard "SAFE" and "FIRE." It would be an obvious design choice for a POSITA to adapt this "third position" to implement the known and beneficial "active reset" functionality, particularly since the "Super Safety" itself is described as a selector replacement offering this feature.
• Routine Design Adaptation: Graves (US9568264B2) already teaches how a "selector cam surface" can interact with a "reset cam surface" on a trigger to achieve a reset. Therefore, it would be obvious for a POSITA to adapt the cam profile of the selector shaft in US10466002B1 to include a "first recess" (for semi-automatic fire) and a "second recess" with a "cam portion" that actively pushes the "first trigger tail portion" down to reset the trigger when in the designated "third mode" (active reset mode), as demonstrated by Hoffman Tactical and taught by Graves. The specific "L-shaped cutout" described in US12529538 is a routine mechanical design choice to form such interacting cam surfaces.
• Actuating the Cam Selector's Rotation: While the specific lever-and-slot coupling (dovetail portion within a longitudinal slot) for torque transfer in US12529538 might not be explicitly detailed in the primary references, the general mechanical principle of using a lever actuated by the reciprocating motion of the bolt carrier or the hammer to dynamically rotate a component within the fire control group (like the cam selector) to achieve a desired function (like an active reset) is well-known in firearm engineering. A POSITA would be capable of designing such an actuation mechanism using known mechanical expedients, including various forms of levers and couplings to transfer torque while allowing for necessary clearances or movements, as exemplified by the described longitudinal slot and dovetail.

Conclusion for Independent Claim 1:

Based on the combination of US10466002B1 and Hoffman Tactical's "Super Safety" (further informed by US9568264B2), a POSITA would have found it obvious to create a three-position firearm safety mechanism featuring a cam selector, a lever, and a trigger, where one of the modes provides an active reset functionality by means of a cam portion on the selector engaging the trigger tail. The specific mechanical coupling details for actuating the cam selector's rotation and configuring the cam recesses are routine design choices for a POSITA.

Dependent Claims Analysis (Claims 2-13):

The dependent claims describe additional features that would also be obvious to a POSITA in light of the prior art and general mechanical design principles:

• Claim 2 (Cylindrical shape): A cylindrical shape for a selector shaft (cam selector) is a common and obvious design in the art of firearm safeties and selectors.
• Claims 3-7 (Detent mechanism): These claims describe a detent and detent tracks for selecting between the three modes. US10466002B1 explicitly teaches a "detent assembly that engages with the selector shaft" and allows selection between SAFE, FIRE, and a "third position." The use of transverse grooves and a rounded detent end (Claims 5, 7) are standard and obvious mechanical features for such detent mechanisms. Positioning them adjacent to an end (Claim 6) is a common design choice.
• Claims 8-11 (Lever and Slot Details): These claims detail the longitudinal slot, its ovular shape, the lever's dovetail portion, and a bent portion.
  • An ovular longitudinal slot with an opening (Claim 9) and a dovetail portion on the lever (Claim 10) are known mechanical coupling techniques for allowing a lever to pivot and transfer torque to a cam selector, while potentially accommodating transverse movement or providing a specific timing delay as described in the '538 patent. The lever extending from the first end (Claim 8) is a design choice.
  • A bent portion on a lever (Claim 11) is a common functional shaping to allow it to interact effectively with other internal components like the hammer or bolt carrier, as described in US12529538. These are all routine mechanical design considerations for a POSITA implementing such an actuation system.
• Claims 12-13 (Trigger Tail Details): These claims describe a rounded first trigger tail portion and a second trigger tail portion with a corner cutout. Rounded surfaces on interacting cam components (Claim 12) are common to reduce friction and facilitate smooth operation. A corner cutout (Claim 13) is a routine design choice to prevent interference with other firearm components during operation.

Therefore, all dependent claims are considered obvious as they represent either routine design choices, known mechanical elements, or straightforward adaptations that a POSITA would implement when integrating the functions of a multi-mode, active-reset safety mechanism into a firearm.

For US patent 12529538, here is a detailed analysis of its term, related applications, and projected expiration:

Patent Term Adjustments (PTA) and Extensions (PTE):

• Patent Term Adjustment (PTA): PTA is designed to compensate for delays caused by the USPTO during the prosecution of a patent application. It adds days to the 20-year term from the earliest non-provisional filing date. The specific PTA for US12529538 is not directly provided in the available patent information or search results. A PTA calculation is typically included in the Issue Notification Letter mailed prior to the patent's issuance. To determine the precise PTA, one would need to consult the patent's official prosecution history (e.g., in USPTO's Patent Center) or the issue notification.
• Patent Term Extension (PTE): PTE is distinct from PTA and is granted to compensate for delays due to regulatory review processes, primarily for products such as human drugs, medical devices, and food additives. There is no indication from the patent's title or abstract that US12529538 relates to a product eligible for PTE. Therefore, it is highly unlikely that this patent has received or would be eligible for a PTE.

Continuation and Divisional Applications:

US12529538 claims priority to US18/968,984, which is also listed as the application number for US12529538B2. The patent also lists "Applications Claiming Priority" including US202363605793P (a provisional application) and US18/968,984.

The "Publications" section lists US20250180315A1 as an "Other version" and "Also Published As" US20250180315A1, which was published on 2025-06-05. This suggests that US20250180315A1 is the publication of the application that matured into US12529538B2.

The "Applications Claiming Priority" section lists:

• US202363605793P (Priority Date: 2023-12-04, Filing Date: 2023-12-04)
• US18/968,984 (Priority Date: 2023-12-04, Filing Date: 2024-12-04)

The patent document itself mentions in the "Prior art date" and "Priority date" sections that the priority date is 2023-12-04. The filing date of the application US18/968,984 is 2024-12-04.

Related Family Members:

The patent family ID for US12529538 is ID=95861059. The family applications list US18/968,984 as the application number, which is the direct parent application for US12529538.

The "Citations" section within the patent also lists several other patents by the same assignee, ABC IP, LLC, which might be considered related in terms of technology, although not direct family members in the sense of continuations or divisionals of this specific application:

• US11724003B2 (Priority date: 2022-01-10; Publication date: 2023-08-15)
• US12038247B2 (Priority date: 2022-09-08; Publication date: 2024-07-16)
• US12169105B1 (Priority date: 2023-06-29; Publication date: 2024-12-17)

These patents, assigned to the same entity, suggest a portfolio of related inventions concerning firearm trigger and safety mechanisms.

Projected Expiration Date:

Under U.S. law, the term of a utility patent (other than a design patent) generally begins on the date the patent issues and ends 20 years from the date on which the application for the patent was filed, or 20 years from the filing date of the earliest application to which a benefit is claimed under 35 U.S.C. 120, 121, or 365(c).

For US12529538:

• The earliest priority date is 2023-12-04.
• The application filing date for US18/968,984 is 2024-12-04.

The "Info" section of the patent explicitly states "Anticipated expiration: 2044-12-04". This date is 20 years from the filing date of the application US18/968,984 (2024-12-04). This implies that any PTA granted for this patent would extend this anticipated expiration date. Without the specific PTA value, the actual expiration date will be 2044-12-04 plus any granted PTA. The USPTO does not calculate expiration dates for patents, but provides tools for estimation, and the patent itself lists an "Anticipated expiration" date.