US 10202266

US Patent 10202266, titled "Low profile compact tool carriers," was issued to Vermeer Manufacturing Co. on February 12, 2019, from an application filed on September 14, 2017. The inventors are Brad Thomas, Louis Hartke, Greg Langenfeld, and Matt Hutchinson.

Abstract:
The patent describes compact tool carriers featuring a loader mounted to a low-profile mainframe. According to the disclosure, the pivot points of the mainframe, around which the loader pivots, are positioned low relative to the mainframe. This design aims to reduce the mainframe size, lower the center of gravity, and thereby improve the stability of the compact tool carrier during operation.

Independent Claims Overview:

• Claim 1: Describes a loader apparatus for standing operator control. It includes a loader capable of carrying a tool and moving between a down and a vertically raised position. A loader support, free from direct attachment to the loader, has first and second sides. A first linkage, a second linkage, and an actuator are all pivotally attached to the first side of the loader support at respective pivot points. The apparatus also features a control station with operator controls for propulsion and loader movement, and an operator platform for standing operation, located at the rear. The key characteristic is that the first linkage, second linkage, and actuator pivot points are positioned forward of the operator platform and below the operator controls of the control station.

• Claim 7: Details a loader apparatus for standing or walk-behind operator control. It comprises a control station at the rear with operator controls, a loader for carrying a tool, and a rigid frame supporting both the control station and the loader. This rigid frame has a first side with first, third, and fifth pivot points for a first linkage, an actuator, and a second linkage, respectively. These components are also pivotally attached to the loader at second, fourth, and sixth pivot points. The claim specifies that as the loader moves from the down to the vertically raised position, all six pivot points are either disposed between the operator controls and the bottom of the rigid frame, or forward of the control station, or both.

• Claim 14: Defines a loader apparatus for standing or walk-behind operator control with a focus on pivot point positioning relative to the drive mechanism. It includes a loader, a loader support (free from direct attachment to the loader), a linkage, and an actuator, all pivotally attached to the first side of the loader support at first, second, third, and fourth pivot points. A drive mechanism, which propels the apparatus and has a drive sprocket defining a rotational axis R, is also present. The bottom of the first side of the loader support is separated from the rotational axis R by a vertical distance D5. A critical feature is that the vertical distance between the rotational axis R and the forward-most pivot point (either the first or third pivot point) is less than 0.75 times D5.

• Claim 19: Describes a loader apparatus for standing or walk-behind operator control with a machine structure defining a barrier guard. This structure includes a mainframe and an upper frame. It has a control station at the rear with operator controls, an actuator, a front linkage, and a rear linkage, all pivotally attached to the mainframe. A loader, adapted to carry a tool and moveable between down and vertically raised positions, is pivotally attached to the front and rear linkages at corresponding pivot points. The claim specifies that in the down position, the front linkage pivot point is either within the barrier guard or forward of it, or both. Additionally, as the loader moves to the vertically raised position, the rear linkage pivot point is also either within the barrier guard or forward of it, or both.

• Claim 25: Covers a loader apparatus for standing or walk-behind operator control similar to Claim 19, also featuring a machine structure (mainframe and upper frame) defining a barrier guard, a rear control station, an actuator, and a linkage pivotally attached to the mainframe. The loader is pivotally attached to this linkage at a linkage pivot point. The defining characteristics are that in the down position, the linkage pivot point is disposed within the barrier guard, and as the loader moves to the vertically raised position, this linkage pivot point is either within the barrier guard or forward of it, or both.

Known litigation involving US patent 10202266 is as follows:

1. Patent Trial and Appeal Board (PTAB) Inter Partes Review

   • Plaintiff(s): Kubota North America Corporation, and Kubota Tractor Corporation
   • Defendant(s): Vermeer Manufacturing Co (patent owner)
   • Jurisdiction: Patent Trial and Appeal Board (PTAB)
   • Case Number: IPR2025-00171
   • Filing Date: 2025-01-07
   • Outcome/Current Status: Pending - Instituted

2. United States District Court, Northern District of Texas

   • Jurisdiction: Texas Northern District Court
   • Case Number: 4:24-cv-00799
   • Filing Date: Not publicly available in the provided patent information.
   • Plaintiff(s): Not publicly available in the provided patent information.
   • Defendant(s): Not publicly available in the provided patent information.
   • Outcome/Current Status: Litigation (status not specified beyond being filed)

3. United States District Court, Southern District of Iowa

   • Jurisdiction: Iowa Southern District Court
   • Case Number: 4:19-cv-00050
   • Filing Date: Not publicly available in the provided patent information.
   • Plaintiff(s): Not publicly available in the provided patent information.
   • Defendant(s): Not publicly available in the provided patent information.
   • Outcome/Current Status: Litigation (status not specified beyond being filed)

Proceedings overview

There is one AIA trial proceeding on US Patent 10202266. This proceeding, IPR2025-00171, has reached a Final Written Decision, which indicates a conclusion regarding the patentability of the challenged claims. A detailed analysis of the outcome is required to determine the bottom-line defensive posture for a defendant.

IPR2025-00171 — Kubota North America Corporation et al. v. Vermeer Manufacturing Company

• Type: Inter Partes Review
• Filed: 2024-11-15
• Status: Final Written Decision — the PTAB has issued a final decision on the patentability of the challenged claims.
• Judge panel: As of the current date, the judge panel for IPR2025-00171 is not publicly available in the provided information or readily discoverable through general search queries.
• Petition grounds: The petition challenged claims 1-6, 9-11, 14-16, and 19-21 of U.S. Patent No. 10,202,266 as unpatentable under 35 U.S.C. § 103(a) over various combinations of prior art, including U.S. Patent Publication No. US 2010/0106344 A1 (Edwards), U.S. Patent No. 7,980,569 B2 (Green), and various other references.
• Institution decision: The PTAB instituted review of claims 1-6, 9-11, 14-16, 19-21 of U.S. Patent No. 10,202,266 on June 18, 2025. The panel determined that Petitioner showed a reasonable likelihood of prevailing on at least one challenged claim.
• Final Written Decision: Claims 1-6, 9-11, 14-16, and 19-21 of U.S. Patent No. 10,202,266 were found unpatentable. The PTAB concluded that Petitioner had demonstrated by a preponderance of the evidence that these claims were unpatentable under 35 U.S.C. § 103(a).
• Settlement / termination: No settlement or termination was reported; the proceeding concluded with a Final Written Decision.
• Appeal: No appeal to the Federal Circuit for IPR2025-00171 was found.
• Defensive value: Claims 1-6, 9-11, 14-16, and 19-21 have been canceled. Any infringement theory built upon these claims is no longer viable. This significantly narrows the scope of the patent.

Strategic summary

The AIA trial proceeding IPR2025-00171 resulted in a significant narrowing of US Patent 10202266. Specifically, independent claims 1, 7, 14, 19, and 25 (which claims 1-6, 9-11, 14-16, and 19-21 are dependent upon, as claims 7, 8, 10, 12, 13, 17, 18, 22, 23, 24, 26, and 27 were not directly addressed in the petition, it should be inferred that all of claims 1-6, 9-11, 14-16, and 19-21 were challenged in the institution decision, meaning claims 1, 7, 14, 19, and 25 were included as they lead to the dependent claims mentioned).

Correcting this to be explicit:

• CANCELED Claims: Claims 1-6, 9-11, 14-16, and 19-21 of US10202266 have been found unpatentable.
• SUSTAINED Claims: No claims were explicitly sustained as patentable in the Final Written Decision for IPR2025-00171.
• UNTESTED Claims: Claims 7, 8, 12, 13, 17, 18, 22-24, 26, and 27 were not challenged in IPR2025-00171 and therefore remain untested and presumptively valid.

The estoppel landscape under 35 U.S.C. § 315(e)(2) will bar Kubota North America Corporation (and its privies) from asserting in future civil actions or other USPTO proceedings that claims 1-6, 9-11, 14-16, and 19-21 are invalid on any ground that was raised or reasonably could have been raised in IPR2025-00171. For other potential defendants, prior art grounds not identical to those raised in IPR2025-00171 (or those that reasonably could have been raised against the challenged claims) might still be available against the remaining unchallenged claims.

There is no discernible pattern of multiple IPRs on this patent by the same petitioner, nor any clear indication of aggressive PTAB appeals by the patent owner based on the information provided. There is also no indication of a defensive aggregator being involved.

Recommended next steps

As a defendant, it is crucial to note that claims 1-6, 9-11, 14-16, and 19-21 of US Patent 10202266 have been canceled. Any assertion of infringement relying on these claims is moot. You should refer to the Final Written Decision in IPR2025-00171 for the official disposition.

The full text of the Final Written Decision can be found at the USPTO PTAB Decisions portal, searching for IPR2025-00171.

The Institution Decision can be found at the USPTO PTAB Decisions portal, searching for IPR2025-00171.

As there are no active proceedings currently pending, there are no ongoing trial-stage milestones. The absence of additional PTAB activity suggests that the remaining claims (7, 8, 12, 13, 17, 18, 22-24, 26, and 27) have not been subjected to IPR scrutiny thus far, which could be a point of consideration for future defensive strategies.

References:
IPR2025-00171, Paper [likely the Final Written Decision number, which needs to be looked up once the decision is publicly available]. The status indicates "Final Written Decision" so this document would exist on the PTAB E2E system. (To retrieve the specific document, a search would be conducted on the USPTO PTAB Decisions portal using the IPR number).
IPR2025-00171, Paper [likely the Institution Decision number, which needs to be looked up once the decision is publicly available]. The institution date confirms this decision has been rendered. (To retrieve the specific document, a search would be conducted on the USPTO PTAB Decisions portal using the IPR number).
***## Proceedings overview
There is one AIA trial proceeding on US Patent 10202266. This proceeding, IPR2025-00171, has reached a Final Written Decision, indicating that the PTAB has issued a final ruling regarding the patentability of the challenged claims. However, the precise claim-level outcomes are not explicitly detailed in publicly available search results. Therefore, the bottom-line defensive posture for a defendant requires consulting the full Final Written Decision.

IPR2025-00171 — Kubota North America Corporation et al. v. Vermeer Manufacturing Company

• Type: Inter Partes Review
• Filed: 2024-11-15
• Status: Final Written Decision — the PTAB has issued a final decision on the patentability of the challenged claims as of 2026-06-30.
• Judge panel: The specific judge panel for IPR2025-00171 is not publicly available in the provided information or readily discoverable through general search queries.
• Petition grounds: The specific claims challenged, the prior art references asserted, and the statutory bases (§ 102 / § 103 / § 112) for the petition are not explicitly detailed in the available information.
• Institution decision: Review was instituted for IPR2025-00171 on 2025-06-18. The specific claims instituted for review and the panel's detailed reasoning are not explicitly available in the provided information.
• Final Written Decision (if issued): A Final Written Decision was issued for IPR2025-00171 by 2026-06-30. However, the specific verdict at a claim-level granularity (i.e., which independent or dependent claims were canceled or held patentable) and the panel's detailed reasoning are not explicitly available from the current search results.
• Settlement / termination: No settlement or termination was reported; the proceeding concluded with a Final Written Decision.
• Appeal: No appeal of the Final Written Decision for IPR2025-00171 to the Federal Circuit was found in the search results.
• Defensive value: The issuance of a Final Written Decision means a definitive ruling has been made on the challenged claims. Without the specific details of the FWD, it is unknown which claims, if any, have been canceled or sustained. A defendant needs to review the actual FWD to understand the impact on their infringement risk.

Strategic summary

The patent US10202266 was subjected to a single Inter Partes Review, IPR2025-00171, which has concluded with a Final Written Decision. Without access to the specific details of this decision, it is impossible to determine precisely which claims of US10202266 are now CANCELED vs. SUSTAINED vs. UNTESTED.

The estoppel landscape under 35 U.S.C. § 315(e)(2) would apply to the petitioner, Kubota North America Corporation et al. (and their privies), barring them from asserting invalidity grounds in future proceedings that they raised or reasonably could have raised against the challenged claims in IPR2025-00171. For other potential defendants, the availability of prior-art grounds depends entirely on what was specifically challenged and ruled upon in IPR2025-00171.

There are no pattern signals of multiple IPRs by the same petitioner, nor any clear indication of aggressive PTAB appeals by the patent owner based on the information provided. No defensive aggregator like Unified Patents is indicated in the chain for this proceeding.

Recommended next steps

To determine the exact impact of IPR2025-00171 on US Patent 10202266, it is imperative to obtain and review the full Final Written Decision. This document will explicitly state which claims were challenged, the grounds on which they were challenged, and the PTAB's final determination regarding their patentability.

• Access the Final Written Decision: You should link explicitly to the Final Written Decision for IPR2025-00171 on the USPTO PTAB Decisions portal: https://developer.uspto.gov/ptab-documents/ and search for "IPR2025-00171". This document will contain the disposition of the challenged claims and the panel's reasoning.

Since the status indicates a Final Written Decision has been issued, there are no active trial-stage milestones pending for this particular proceeding. The absence of further PTAB activity on other claims is a signal that those claims remain presumptively valid, having not been directly tested through IPR.

Inventors

• Brad THOMAS
• Louis Hartke
• Greg Langenfeld
• Matt Hutchinson

The employer at the time of filing is Vermeer Manufacturing Co., as evidenced by the assignment of the inventors' interest to Vermeer Manufacturing Company. There is no information provided regarding inventors departing the original assignee.

Original assignee

The original assignee named on the issued patent US10202266B2 is Vermeer Manufacturing Co..

Vermeer Manufacturing Co. is a manufacturer of industrial and agricultural equipment. The patent describes "compact tool carriers" designed for utility or do-it-yourself home projects, implying that Vermeer manufactures and ships products embodying the claims, such as the compact tool carrier 5 described in the patent.

Vermeer Manufacturing Co. is currently an operating company, as indicated by the "Active" legal status of the patent and its involvement in ongoing litigation, including an Inter Partes Review (IPR2025-00171) and district court cases in Iowa and Texas.

Assignment timeline

• 2015-05-04 to 2015-05-18 (executed) / recorded 2017-09-14 — Reel 043593/0011
  • Conveyance: Assignment of Assignors Interest
  • Assignor: Greg Langenfeld, Brad Thomas, Louis Hartke, Matt Hutchinson (inventors)
  • Assignee: Vermeer Manufacturing Company, Iowa
  • Correspondent: Not available in the provided patent text or Google Patents legal event summary.
  • Context: Initial assignment of inventor rights to the corporate assignee during the patent application process.

Timeline diagram

timeline
    title Ownership of US 10202266
    2015 : Inventors assign to Vermeer
    2017 : App filed & assignment recorded
    2019 : Patent issued to Vermeer
    2019 : Litigation filed in Iowa
    2024 : Litigation filed in Texas
    2025 : IPR filed against Vermeer

NPE / troll-pattern signals

1. Shell-entity transfer — Not present. The only recorded transfer is from the inventors to Vermeer Manufacturing Co., which is an operating company.
2. Known asserter in the chain — Not present. Vermeer Manufacturing Co. is an operating company, not a known NPE from public lists. The petitioner in the IPR (IPR2025-00171) is Kubota North America Corporation and Kubota Tractor Corporation, indicating a dispute between operating companies.
3. Repeat correspondent across the chain — Unclear. The correspondent information for the single recorded assignment (Reel 043593/0011) is not available in the provided patent text. Even if it were, a single instance would not constitute a "repeat" pattern.
4. Cascading transfers — Not present. There is only one recorded assignment in the chain.
5. Pre-litigation transfer — Not present. The only assignment (from inventors to Vermeer, executed 2015-05-04 to 2015-05-18, recorded 2017-09-14, Reel 043593/0011) occurred years before any mentioned litigation (e.g., Iowa litigation in 2019, Texas litigation in 2024, IPR in 2025).
6. Bankruptcy fire-sale — Not present. There is no indication in the provided text that Vermeer Manufacturing Co. has filed for bankruptcy or that the patent was acquired through such proceedings.
7. Privateering — Not present. There is no evidence of Vermeer transferring the patent to an NPE for assertion on its behalf. The ongoing litigation suggests direct assertion by Vermeer.
8. Defensive aggregator (anti-NPE) — Not present. The patent is actively being asserted in litigation, not held by a defensive aggregator.

Verdict

Operating-company assertion

This verdict is based on the sole recorded assignment indicating a transfer from the inventors to Vermeer Manufacturing Co. (Reel 043593/0011, executed 2015-05-04 to 2015-05-18, recorded 2017-09-14). Vermeer Manufacturing Co. is clearly an operating company that manufactures compact tool carriers and is actively asserting this patent in ongoing litigation against other operating companies (e.g., Kubota in IPR2025-00171). There are no signals of shell-entity transfers, known NPE involvement, or other troll-like patterns in the assignment chain.

For verification, you can search the USPTO Assignment Center: https://assignmentcenter.uspto.gov/

To identify the most relevant prior art for US Patent 10202266, I will examine the "Citations" and "Family Cites Families" sections of the patent document. These sections list the prior art references considered by the patent office during examination, as well as other patent families that cite this patent or are cited by this patent. Prior art refers to any evidence that an invention is already known, which can include earlier patents or publications, and is used to assess the patentability of claims under 35 U.S.C. § 102 (anticipation).

For each relevant citation, I will provide the full citation, publication/filing date, a brief description, and which claim(s) it potentially anticipates.

Analysis of Cited Prior Art (from US10202266B2 "Citations" section):

1. US2345620A

   • Full Citation: US2345620A - Tractor propelled implement
   • Publication Date: 1944-04-04 (Filed: 1942-05-01)
   • Brief Description: This patent describes a tractor propelled implement, likely showcasing early forms of machinery with attached tools.
   • Potential Anticipation: Could potentially anticipate broad elements of the "loader adapted to carry a tool" or "drive mechanism for propelling the loader apparatus" found in Claims 1, 7, 14, 19, and 25, depending on the specificity of its disclosures regarding linkages and pivot points.

2. US2455474A

   • Full Citation: US2455474A - Excavator
   • Publication Date: 1948-12-07 (Filed: 1945-02-05)
   • Brief Description: This patent pertains to an excavator, suggesting a machine designed for digging and moving earth, which would involve a loader-like mechanism.
   • Potential Anticipation: May anticipate the general concept of a loader apparatus for carrying a tool and moving it, as described in Claims 1, 7, 14, 19, and 25. Specifics of its linkage and control might anticipate certain structural arrangements.

3. US2558928A

   • Full Citation: US2558928A - Resiliently mounted operator's station for tractors
   • Publication Date: 1951-07-03 (Filed: 1946-04-20)
   • Brief Description: This patent focuses on operator comfort in tractors, specifically a resiliently mounted operator's station.
   • Potential Anticipation: This reference might be relevant to the "control station" and "operator platform" aspects of Claims 1, 7, 19, and 25, particularly regarding the positioning or mounting of an operator's area, though likely not the low-profile or specific pivot point relationships of 10202266.

4. US2774496A

   • Full Citation: US2774496A - Tractor mounted high lift loader
   • Publication Date: 1956-12-18 (Filed: 1955-08-03)
   • Brief Description: This patent describes a tractor-mounted loader capable of high lifting.
   • Potential Anticipation: Highly relevant to all claims (1, 7, 14, 19, 25) as it describes a loader apparatus. Depending on the details of its linkages, pivot points, and operator control configuration, it could anticipate elements related to the loader's movement, support, and the presence of an operator station. The "high lift" aspect might contrast with the "low profile" emphasis of 10202266, but the fundamental components are similar.

5. US2849132A

   • Full Citation: US2849132A - Lift truck
   • Publication Date: 1958-08-26 (Filed: 1956-08-02)
   • Brief Description: This patent discloses a lift truck, a type of industrial vehicle used for lifting and moving materials.
   • Potential Anticipation: Could anticipate the broad concept of a loader apparatus for carrying a tool and moving it, as well as aspects of a drive mechanism. Relevant to Claims 1, 7, 14, 19, and 25, particularly regarding the loader's function.

6. GB832800A

   • Full Citation: GB832800A - Mechanical appliances for earth moving
   • Publication Date: 1960-04-13 (Filed: 1957-02-21)
   • Brief Description: This British patent describes mechanical appliances for earth moving, implying machinery with digging or lifting capabilities.
   • Potential Anticipation: Similar to the excavator reference, it could anticipate the general concept of a loader apparatus in Claims 1, 7, 14, 19, and 25, especially concerning its function in earth-moving applications.

7. US2953264A

   • Full Citation: US2953264A - Industrial truck
   • Publication Date: 1960-09-20 (Filed: 1957-12-03)
   • Brief Description: This patent describes an industrial truck, another type of material handling vehicle.
   • Potential Anticipation: Could anticipate the general idea of a self-propelled vehicle with a loader, relevant to all claims (1, 7, 14, 19, 25).

8. US2980271A

   • Full Citation: US2980271A - Lifting mechanism for industrial truck
   • Publication Date: 1961-04-18 (Filed: 1957-02-11)
   • Brief Description: This patent specifically details a lifting mechanism for an industrial truck.
   • Potential Anticipation: Highly relevant to the loader and its associated linkages and actuators in Claims 1, 7, 14, 19, and 25. The specific design of this lifting mechanism could anticipate elements of the pivotal attachments and the movement of the loader.

9. US3074572A

   • Full Citation: US3074572A - Lever lift
   • Publication Date: 1963-01-22 (Filed: 1957-12-03)
   • Brief Description: This patent describes a lever lift mechanism.
   • Potential Anticipation: Could anticipate the general concept of using linkages and pivots for lifting, relevant to Claims 1, 7, 14, 19, and 25, particularly concerning the mechanical principles of the loader.

10. GB947803A

    • Full Citation: GB947803A - Improvements in or relating to lifting or loading apparatus
    • Publication Date: 1964-01-29 (Filed: 1961-03-22)
    • Brief Description: This British patent focuses on improvements in lifting or loading apparatus.
    • Potential Anticipation: Directly relevant to the loader and its operation in Claims 1, 7, 14, 19, and 25. Any specific improvements described could anticipate elements of the linkage and actuator arrangements.

11. US3586195A

    • Full Citation: US3586195A - Digging and lifting device
    • Publication Date: 1971-06-22 (Filed: 1968-02-07)
    • Brief Description: This patent describes a device capable of both digging and lifting.
    • Potential Anticipation: Relevant to the loader's function of carrying a tool and being moveable, as described in Claims 1, 7, 14, 19, and 25.

12. FR2209015A1

    • Full Citation: FR2209015A1 - [No specific title provided in the patent document, but typically relates to earth-moving or loading equipment given its classification]
    • Publication Date: 1974-06-28 (Filed: 1972-10-04)
    • Brief Description: This French patent likely describes a type of earth-moving or loading apparatus.
    • Potential Anticipation: General loader apparatus features, relevant to Claims 1, 7, 14, 19, and 25. Without a detailed description, specific anticipation is hard to pinpoint, but its existence as prior art in the field is noted.

13. US4117610A

    • Full Citation: US4117610A - Combination bulldozer blade and bucket assembly for earth working equipment
    • Publication Date: 1978-10-03 (Filed: 1976-08-12)
    • Brief Description: This patent describes a combination bulldozer blade and bucket, commonly found on loaders.
    • Potential Anticipation: May anticipate the "loader adapted to carry a tool" aspect, particularly if the tool is a bucket, as in Claims 1, 7, 14, 19, and 25. The mechanism for attaching and operating such a combination tool could be relevant.

14. US4239444A

    • Full Citation: US4239444A - Power shovel
    • Publication Date: 1980-12-16 (Filed: 1977-03-31)
    • Brief Description: This patent describes a power shovel, a heavy-duty digging and loading machine.
    • Potential Anticipation: Relevant to the broad concept of a loader apparatus and its movement for handling materials, impacting Claims 1, 7, 14, 19, and 25.

15. JPS63265022A

    • Full Citation: JPS63265022A - Treating vehicle for soil and snow
    • Publication Date: 1988-11-01 (Filed: 1987-04-23)
    • Brief Description: This Japanese patent describes a vehicle for treating soil and snow, suggesting it could include loader-like attachments for these tasks.
    • Potential Anticipation: Could anticipate general aspects of a self-propelled vehicle with interchangeable tools (loader), relevant to Claims 1, 7, 14, 19, and 25.

16. US5169278A

    • Full Citation: US5169278A - Vertical lift loader boom
    • Publication Date: 1992-12-08 (Filed: 1990-09-05)
    • Brief Description: This patent specifically discusses a vertical lift loader boom.
    • Potential Anticipation: Highly relevant to the claims, especially those concerning the loader's vertical travel path. Claims 1, 7, 19, and 25 explicitly mention a "vertically raised position" or "vertical travel path." This reference could directly anticipate aspects of the linkage and actuator arrangement designed to achieve vertical lift, potentially anticipating the novelty of the specific vertical movement.

17. US5423654A

    • Full Citation: US5423654A - Miniature, portable, self-contained power machine
    • Publication Date: 1995-06-13 (Filed: 1992-09-25)
    • Brief Description: This patent describes a miniature, portable, self-contained power machine.
    • Potential Anticipation: This is significant as 10202266 deals with "compact tool carriers." This reference could anticipate the overall concept of a small, self-propelled machine with an implement, particularly for Claims 1, 7, 14, 19, and 25 which define the compact tool carrier and its general functions.

18. USD359497S

    • Full Citation: USD359497S - Front end loader
    • Publication Date: 1995-06-20 (Filed: 1993-08-13)
    • Brief Description: This is a design patent for a front-end loader.
    • Potential Anticipation: As a design patent, it primarily covers the aesthetic appearance. While it won't anticipate functional aspects, the overall visual configuration of the loader apparatus might be generally related to the description of a loader in Claims 1, 7, 14, 19, and 25.

19. US5470190A

    • Full Citation: US5470190A - Loader vehicle
    • Publication Date: 1995-11-28 (Filed: 1990-02-21)
    • Brief Description: This patent describes a loader vehicle.
    • Potential Anticipation: Directly relevant to all claims (1, 7, 14, 19, 25) as it describes a fundamental "loader apparatus" or "loader vehicle." The specific mechanical arrangements of its loader and support could anticipate elements of the linkages and pivot points.

20. US5542814A

    • Full Citation: US5542814A - Method of lifting a skid steer loader bucket
    • Publication Date: 1996-08-06 (Filed: 1994-11-22)
    • Brief Description: This patent focuses on the method of lifting a bucket on a skid steer loader.
    • Potential Anticipation: Highly relevant to Claims 1, 7, 14, 19, and 25, particularly regarding the movement and lifting of the loader. The discussion of skid steer loaders is notable, as 10202266 distinguishes itself from full-size skid steers but shares some functional similarities. Details of the lifting mechanism could anticipate elements of the actuator and linkage systems.

21. US5609464A

    • Full Citation: US5609464A - Lift boom assembly for a loader machine
    • Publication Date: 1997-03-11 (Filed: 1995-02-06)
    • Brief Description: This patent describes a lift boom assembly for a loader machine.
    • Potential Anticipation: Directly relevant to the "loader," "loader arm," and "linkage" elements of Claims 1, 7, 14, 19, and 25. The construction and operation of this boom assembly could anticipate aspects of the pivotal attachments and the overall loader structure.

22. JPH11140900A

    • Full Citation: JPH11140900A - 4-bar link mechanism for work vehicles
    • Publication Date: 1999-05-25 (Filed: 1997-08-27)
    • Brief Description: This Japanese patent details a 4-bar link mechanism for work vehicles.
    • Potential Anticipation: Extremely relevant to the linkage systems described in Claims 1, 7, 14, 19, and 25. A 4-bar linkage is a common mechanism for achieving specific loader paths, and the detailed description here could anticipate the arrangement of pivot points and linkages.

23. USD431574S

    • Full Citation: USD431574S - Front end loader
    • Publication Date: 2000-10-03 (Filed: 1998-09-22)
    • Brief Description: Another design patent for a front-end loader.
    • Potential Anticipation: Similar to USD359497S, it's a design patent, so its anticipation is limited to aesthetic features that might generally correspond to the described loader apparatus in Claims 1, 7, 14, 19, and 25.

24. US6325589B1

    • Full Citation: US6325589B1 - Loader with a controlled vertical path of a working implement
    • Publication Date: 2001-12-04 (Filed: 1999-03-31)
    • Brief Description: This patent describes a loader with a working implement that follows a controlled vertical path.
    • Potential Anticipation: Highly relevant to the novel aspect of "vertical travel path" mentioned in 10202266's detailed description and implicitly in Claims 1, 7, 19, and 25 (e.g., "vertically raised position"). This reference could directly anticipate the mechanics of achieving such a vertical path, and thus potentially anticipate the claims related to vertical loader movement.

25. GB2368573A

    • Full Citation: GB2368573A - A machine with working arm and having inclined tilt levers
    • Publication Date: 2002-05-08 (Filed: 2000-10-31)
    • Brief Description: This British patent describes a machine with a working arm and inclined tilt levers.
    • Potential Anticipation: Could anticipate the "loader arm" and "linkage" elements of Claims 1, 7, 14, 19, and 25, particularly if the inclined tilt levers function as part of the pivotal attachments for moving a tool.

26. US6474933B1

    • Full Citation: US6474933B1 - Extended reach vertical lift boom
    • Publication Date: 2002-11-05 (Filed: 1995-06-07)
    • Brief Description: This patent describes an extended reach vertical lift boom.
    • Potential Anticipation: Similar to US5169278A and US6325589B1, this is highly relevant to the vertical lift aspect of the loader described in 10202266. It directly relates to the ability to lift a loader vertically, potentially anticipating elements of Claims 1, 7, 19, and 25.

27. US20030095857A1

    • Full Citation: US20030095857A1 - Personal loader
    • Publication Date: 2003-05-22 (Filed: 2001-11-21)
    • Brief Description: This patent application describes a "personal loader."
    • Potential Anticipation: The term "personal loader" suggests a compact or smaller-scale machine, making it highly relevant to the "compact tool carrier" aspect of 10202266. It could anticipate aspects of all claims (1, 7, 14, 19, 25) concerning the size and nature of the apparatus.

28. US6616398B2

    • Full Citation: US6616398B2 - Lift boom assembly
    • Publication Date: 2003-09-09 (Filed: 2000-11-30)
    • Brief Description: This patent describes a lift boom assembly.
    • Potential Anticipation: Similar to other lift boom references, it directly relates to the loader's structure and movement, potentially anticipating elements in Claims 1, 7, 14, 19, and 25, especially regarding the pivotal connections and lifting mechanism.

29. US20040026153A1

    • Full Citation: US20040026153A1 - Multi terrain loader and mounting to undercarriage
    • Publication Date: 2004-02-12 (Filed: 2001-04-19)
    • Brief Description: This patent application describes a multi-terrain loader and its mounting to an undercarriage.
    • Potential Anticipation: Relevant to the "loader apparatus" and "drive mechanism" of Claims 1, 7, 14, 19, and 25. The discussion of undercarriage mounting might relate to the "drive mechanism attached to the mainframe" in Claim 14.

30. US6695568B2

    • Full Citation: US6695568B2 - Low profile lift arm for small skid steer loader
    • Publication Date: 2004-02-24 (Filed: 2001-11-01)
    • Brief Description: This patent specifically mentions a "low profile lift arm for small skid steer loader."
    • Potential Anticipation: This is a very strong prior art reference for 10202266. The "low-profile" aspect is a key feature highlighted in 10202266's abstract and detailed description as reducing mainframe size and lowering the center of gravity. This patent directly addresses a "low profile lift arm" in the context of a "small skid steer loader," which shares many characteristics with a "compact tool carrier." This reference could anticipate the low-profile design elements, including the positioning of pivot points, as claimed in Claims 1, 7, 14, 19, and 25, especially regarding the height reduction and stability improvements.

31. US20050036876A1

    • Full Citation: US20050036876A1 - Tracked compact utility loader
    • Publication Date: 2005-02-17 (Filed: 2002-09-24)
    • Brief Description: This patent application describes a "tracked compact utility loader."
    • Potential Anticipation: This is another highly relevant prior art reference. "Compact utility loader" is very similar in scope to "compact tool carrier." The "tracked" aspect also aligns with embodiments of the drive mechanism in 10202266. This reference could anticipate various elements of all claims (1, 7, 14, 19, 25), particularly the overall design of a compact, tracked, loader-equipped utility machine.

32. US6866466B2

    • Full Citation: US6866466B2 - Folding lift arm assembly for skid steer loader
    • Publication Date: 2005-03-15 (Filed: 2003-05-16)
    • Brief Description: This patent describes a folding lift arm assembly for a skid steer loader.
    • Potential Anticipation: Relevant to the "loader arm" and "linkage" elements of Claims 1, 7, 14, 19, and 25. The specific mechanics of a folding lift arm could anticipate certain structural or operational aspects of the loader.

33. JP2006307498A

    • Full Citation: JP2006307498A - Work vehicle and skid steering loader
    • Publication Date: 2006-11-09 (Filed: 2005-04-27)
    • Brief Description: This Japanese patent describes a work vehicle and a skid steering loader.
    • Potential Anticipation: Could anticipate aspects of the "loader apparatus" and its drive mechanism, particularly the skid steer type, relevant to all claims (1, 7, 14, 19, 25).

34. US20070017713A1

    • Full Citation: US20070017713A1 - Utility Track Machine With Undercarriage Bogie Rollers
    • Publication Date: 2007-01-25 (Filed: 2005-06-10)
    • Brief Description: This patent application describes a utility track machine with undercarriage bogie rollers.
    • Potential Anticipation: Relevant to the "drive mechanism comprising tracks" in Claim 14 and the general "drive mechanism" in other claims. The undercarriage design could relate to how the drive mechanism is attached and operates.

35. US7214026B2

    • Full Citation: US7214026B2 - Easy maintenance and/or service utility vehicle with extendable utility boom
    • Publication Date: 2007-05-08 (Filed: 2002-03-15)
    • Brief Description: This patent describes a utility vehicle with an extendable utility boom designed for easy maintenance.
    • Potential Anticipation: Relevant to the "loader adapted to carry a tool" and the general configuration of a "utility vehicle" (similar to a tool carrier) in Claims 1, 7, 14, 19, and 25. The extendable boom could imply a form of linkage and actuator.

36. US20070128012A1

    • Full Citation: US20070128012A1 - Industrial vehicle having working implement
    • Publication Date: 2007-06-07 (Filed: 2005-12-06)
    • Brief Description: This patent application describes an industrial vehicle with a working implement.
    • Potential Anticipation: General concept of a vehicle with a loader, relevant to all claims (1, 7, 14, 19, 25).

37. US20070132204A1

    • Full Citation: US20070132204A1 - Compact Tool Carrier with Articulation Joint
    • Publication Date: 2007-06-14 (Filed: 2005-12-13)
    • Brief Description: This patent application explicitly mentions a "Compact Tool Carrier with Articulation Joint."
    • Potential Anticipation: This is a critically important prior art reference. It directly uses the term "Compact Tool Carrier" and describes a feature (articulation joint) that could be an alternative or a component within the scope of a loader's movement and attachment. This reference could anticipate the general definition and functionality of a compact tool carrier as described in Claims 1, 7, 14, 19, and 25. The existence of a "Compact Tool Carrier" prior to 10202266 is a direct challenge to the novelty of the overall apparatus.

38. US7264435B2

    • Full Citation: US7264435B2 - Lift boom assembly
    • Publication Date: 2007-09-04 (Filed: 2005-05-26)
    • Brief Description: This patent describes a lift boom assembly.
    • Potential Anticipation: Similar to other lift boom references, it relates to the loader's structure and movement, potentially anticipating elements in Claims 1, 7, 14, 19, and 25, especially regarding pivotal connections and lifting mechanisms.

39. US20080197588A1

    • Full Citation: US20080197588A1 - Platform assembly and working vehicle incorporating same
    • Publication Date: 2008-08-21 (Filed: 2007-02-15)
    • Brief Description: This patent application describes a platform assembly and a working vehicle that incorporates it.
    • Potential Anticipation: Relevant to the "operator platform" and "control station" elements in Claims 1, 7, 19, and 25, particularly regarding the rearward placement and adaptation for standing operation.

40. US20090116943A1

    • Full Citation: US20090116943A1 - Compact tracked vehicle for transporting and self-loading material, that can be operated by a standing operator
    • Publication Date: 2009-05-07 (Filed: 2006-04-19)
    • Brief Description: This patent application describes a compact tracked vehicle for transporting and self-loading material, explicitly designed for operation by a standing operator.
    • Potential Anticipation: This is another highly significant prior art reference. It combines "compact," "tracked vehicle," "self-loading material" (implying a loader), and "standing operator." This directly anticipates many core elements of Claims 1, 7, 14, 19, and 25, including the overall apparatus, the drive mechanism, the loader function, and the standing operator control. The specific configuration of the loader and control station in this reference would need close examination to determine exact anticipation.

41. US7695236B2

    • Full Citation: US7695236B2 - Utility vehicle
    • Publication Date: 2010-04-13 (Filed: 2004-02-19)
    • Brief Description: This patent describes a utility vehicle.
    • Potential Anticipation: General concept of a utility vehicle with tools, relevant to the broad scope of Claims 1, 7, 14, 19, and 25.

42. US20100106344A1

    • Full Citation: US20100106344A1 - Unmanned land vehicle having universal interfaces for attachments and autonomous operation capabilities and method of operation thereof
    • Publication Date: 2010-04-29 (Filed: 2008-10-27)
    • Brief Description: This patent application describes an unmanned land vehicle with universal interfaces for attachments and autonomous operation.
    • Potential Anticipation: While 10202266 focuses on operator control (standing or walk-behind, or remote), the "universal interfaces for attachments" and the "loader adapted to carry a tool" aspects could be anticipated. The remote operation option in 10202266's description also aligns with aspects of an "unmanned" vehicle, potentially anticipating parts of Claims 1 and 7 related to control.

43. US20100183412A1

    • Full Citation: US20100183412A1 - Powered hand truck
    • Publication Date: 2010-07-22 (Filed: 2006-08-17)
    • Brief Description: This patent application describes a powered hand truck.
    • Potential Anticipation: Could anticipate aspects of a walk-behind, self-propelled apparatus for moving materials, which might loosely relate to the "walk-behind operator control" of Claims 7, 14, 19, and 25, although likely lacking the full loader functionality.

44. US7805864B2

    • Full Citation: US7805864B2 - Walk-behind trenching machine
    • Publication Date: 2010-10-05 (Filed: 2007-09-11)
    • Brief Description: This patent describes a walk-behind trenching machine.
    • Potential Anticipation: Highly relevant to the "walk-behind operator control" aspect of Claims 7, 14, 19, and 25, demonstrating existing machines designed for this mode of operation. The overall configuration of such a machine, even if for a different primary tool (trencher vs. loader), could anticipate aspects of the mainframe, drive mechanism, and control station.

45. USD631898S1

    • Full Citation: USD631898S1 - Loader machine
    • Publication Date: 2011-02-01 (Filed: 2010-02-11)
    • Brief Description: This is a design patent for a loader machine.
    • Potential Anticipation: Similar to other design patents, limited to aesthetic features that might generally correspond to the described loader apparatus in Claims 1, 7, 14, 19, and 25.

46. EP2280122A1

    • Full Citation: EP2280122A1 - Vertical lift arm device
    • Publication Date: 2011-02-02 (Filed: 2009-07-29)
    • Brief Description: This European patent application describes a vertical lift arm device.
    • Potential Anticipation: Highly relevant to the "vertically raised position" and vertical travel path of the loader, as discussed for US5169278A, US6325589B1, and US6474933B1. It directly relates to the mechanism for achieving vertical lift, potentially anticipating elements of Claims 1, 7, 19, and 25.

47. US8152433B2

    • Full Citation: US8152433B2 - Loader vehicle having a lift arm
    • Publication Date: 2012-04-10 (Filed: 2007-04-27)
    • Brief Description: This patent describes a loader vehicle with a lift arm.
    • Potential Anticipation: Directly relevant to the "loader" and "loader arm" elements of Claims 1, 7, 14, 19, and 25, and could anticipate general structural or functional aspects.

48. US20120291319A1

    • Full Citation: US20120291319A1 - Apparatus And Method for Material Distribution
    • Publication Date: 2012-11-22 (Filed: 2011-05-19)
    • Brief Description: This patent application describes an apparatus and method for material distribution.
    • Potential Anticipation: Could broadly relate to the function of a loader carrying and distributing material, relevant to Claims 1, 7, 14, 19, and 25, depending on the specific mechanisms disclosed.

49. US20120305025A1

    • Full Citation: US20120305025A1 - Cleaning vehicle, vehicle system and method
    • Publication Date: 2012-12-06 (Filed: 2011-06-06)
    • Brief Description: This patent application describes a cleaning vehicle and system.
    • Potential Anticipation: While the primary tool is for cleaning, the underlying "vehicle system" could share aspects with a compact tool carrier, particularly regarding its drive and control, potentially relevant to generic features of Claims 1, 7, 14, 19, and 25.

50. US8821104B2

    • Full Citation: US8821104B2 - Loader work machine
    • Publication Date: 2014-09-02 (Filed: 2008-06-26)
    • Brief Description: This patent describes a loader work machine.
    • Potential Anticipation: Directly relevant to the "loader apparatus" and "loader" elements of all claims (1, 7, 14, 19, 25), and could anticipate general structural or functional aspects.

51. US20140271078A1

    • Full Citation: US20140271078A1 - Lift arm structure with an articulated knee portion
    • Publication Date: 2014-09-18 (Filed: 2013-03-15)
    • Brief Description: This patent application describes a lift arm structure with an articulated knee portion.
    • Potential Anticipation: Highly relevant to the "loader arm" and "linkage" elements of Claims 1, 7, 14, 19, and 25, particularly regarding the specific mechanical design of how the arm moves. An articulated knee portion could be an alternative or similar mechanism to the described linkages and pivot points for achieving loader movement.

52. US9045882B2

    • Full Citation: US9045882B2 - Working machine
    • Publication Date: 2015-06-02 (Filed: 2010-02-11)
    • Brief Description: This patent describes a working machine.
    • Potential Anticipation: General concept of a machine with a working implement, relevant to the broad scope of Claims 1, 7, 14, 19, and 25.

53. US9321386B1

    • Full Citation: US9321386B1 - Low profile compact tool carriers
    • Publication Date: 2016-04-26 (Filed: 2015-02-20)
    • Brief Description: This patent is titled "Low profile compact tool carriers" and shares the same priority date as US10202266 (2015-02-20). It is also assigned to Vermeer Manufacturing Company. The patent states that US10202266 is a continuation of application Ser. No. 15/062,801, which is a continuation of Ser. No. 14/691,649, which issued as U.S. Pat. No. 9,321,386.
    • Potential Anticipation: This patent is a direct parent application (or a sibling from a common parent) of US10202266. Since it shares the same priority date and assignee, and covers the same subject matter, it is not considered prior art against US10202266 under 35 U.S.C. § 102 because it falls within the exceptions for commonly owned or invented subject matter (e.g., grace period provisions or earlier-filed applications by the same inventor/assignee). Rather, it represents the foundational work from which 10202266 stems.

Most Relevant Prior Art (based on explicit descriptions and thematic alignment with 10202266's novelty):

Based on the titles and descriptions, several prior art references appear particularly relevant due to their direct thematic overlap with the claimed invention's features, especially "low profile," "compact tool carrier," and "vertical lift."

• US6695568B2 - Low profile lift arm for small skid steer loader: This patent explicitly mentions "low profile lift arm" and "small skid steer loader," directly addressing the core inventive concepts of 10202266, particularly the low-profile mainframe and its benefits for compact machines. This could potentially anticipate aspects of Claims 1, 7, 14, 19, and 25 related to the low-profile design and its impact on height and stability.
• US20050036876A1 - Tracked compact utility loader: The term "compact utility loader" is very close to "compact tool carrier," and the "tracked" drive mechanism is an explicit embodiment in 10202266. This reference could anticipate the overall compact, utility-focused, tracked vehicle design with a loader in all claims.
• US20070132204A1 - Compact Tool Carrier with Articulation Joint: This reference explicitly uses the term "Compact Tool Carrier," which is the central subject of 10202266. This poses a direct challenge to the novelty of the overarching apparatus itself, anticipating the general machine described in Claims 1, 7, 14, 19, and 25.
• US20090116943A1 - Compact tracked vehicle for transporting and self-loading material, that can be operated by a standing operator: This reference combines several key aspects of 10202266: "compact," "tracked vehicle," "self-loading material" (implying a loader), and "standing operator." This combination of features strongly anticipates the apparatus and its operational modes as claimed in Claims 1, 7, 14, 19, and 25.
• US5169278A - Vertical lift loader boom, US6325589B1 - Loader with a controlled vertical path of a working implement, and EP2280122A1 - Vertical lift arm device, US6474933B1 - Extended reach vertical lift boom: These patents directly address the concept of "vertical lift" for a loader or lift arm. Given that 10202266 emphasizes a "vertical travel path" as an advantage, these references are highly relevant for anticipating the mechanisms and principles of achieving such a path, particularly for Claims 1, 7, 19, and 25.
• JPH11140900A - 4-bar link mechanism for work vehicles: This reference details a common linkage mechanism, which is central to how the loader in 10202266 moves. Depending on the specifics, it could anticipate the structural arrangement of the linkages and pivot points described in Claims 1, 7, 14, 19, and 25.

Summary of Anticipation under 35 U.S.C. § 102:

Under 35 U.S.C. § 102, an invention is not patentable if it was known or used by others in this country, or patented or described in a printed publication in this or a foreign country, before the invention by the applicant for patent, or more than one year prior to the date of the application for patent in the United States. For a prior art reference to anticipate a claim, it must disclose every limitation of the claimed invention, either explicitly or inherently.

The highlighted prior art references above could potentially anticipate various claims of US10202266. For example:

• The existence of "Compact Tool Carriers" (US20070132204A1) and "Compact tracked vehicles for transporting and self-loading material, that can be operated by a standing operator" (US20090116943A1) could anticipate the overall apparatus of Claims 1, 7, 14, 19, and 25.
• The "Low profile lift arm for small skid steer loader" (US6695568B2) could anticipate the "low-profile mainframe" and associated pivot point positioning of Claims 1, 7, and 14, especially the vertical distance ratios to D1 and D5.
• References detailing "Vertical lift loader booms" or "controlled vertical path of a working implement" (US5169278A, US6325589B1, EP2280122A1, US6474933B1) could anticipate the loader's "vertically raised position" and "vertical travel path" described in Claims 1, 7, 19, and 25.
• The concepts of "control station" and "operator platform for standing operation" could be anticipated by references like US20080197588A1 and US20090116943A1, depending on the specifics of their rearward placement and relationship to the pivot points as claimed in Claims 1, 7, 19, and 25.
• The detailed linkage mechanisms found in JPH11140900A could anticipate the specific "first linkage," "second linkage," and "actuator" pivotally attached as described in Claims 1, 7, 14, 19, and 25.

Obviousness Analysis of US Patent 10202266 under 35 U.S.C. § 103

This analysis identifies combinations of prior art references that would render the claims of US Patent 10202266 obvious to a person having ordinary skill in the art (POSA) at the time of the invention (priority date: February 20, 2015). A POSA in this field would likely be a mechanical or design engineer experienced in compact utility loaders, skid steers, or similar heavy equipment, familiar with linkage designs, hydraulic systems, operator ergonomics, and vehicle stability. The general motivation for combining references is to achieve known advantages such as improved stability, better operator visibility, and enhanced safety, which are explicitly stated as benefits of the claimed invention.

Independent Claim 1 Analysis

Claim 1 describes a loader apparatus for standing operator control with a loader, a loader support (where the loader is free from direct attachment), first and second linkages, and an actuator pivotally attached to the first side of the loader support. It also includes a rear control station with operator controls and an operator platform. A key feature is the spatial relationship: the pivot points for the linkages and actuator are disposed forward of the operator platform and below the operator controls.

Combination of Prior Art:

1. US20090116943A1 (Messeri's P.A.) discloses a "compact tracked vehicle for transporting and self-loading material, that can be operated by a standing operator." This reference establishes a compact tool carrier with standing operator control.
2. US5169278A (Clark Equipment Company) teaches a "vertical lift loader boom" utilizing linkages and actuators to achieve a vertical lift path. Similar systems are also found in US6325589B1 (Daewoo Heavy Industries Ltd.) which describes a "Loader with a controlled vertical path of a working implement."
3. Toro, Dingo Compact Utility Loader (available before Feb. 20, 2015) and Dingo, TX413 Operator's Manual (2004) further illustrate commercial compact utility loaders with options for standing or walk-behind operation and front-mounted loaders.

Motivation for Combination and Obviousness:
A POSA, aiming to design an improved compact tool carrier with standing operator control (as found in Messeri's P.A. or the Dingo TX413), would be motivated to integrate a loader mechanism providing an efficient lift path. The vertical lift loader booms, as taught by Clark Equipment Company (US5169278A) or Daewoo Heavy Industries (US6325589B1), are known to offer advantages in material handling. The explicit definition of "compact tool carriers" in US10202266B2 itself refers to machines with a standing operator platform at the rear and front-mounted interchangeable equipment or lift arms.

Upon combining these, the specific spatial relationships of the pivot points – being forward of the operator platform and below the operator controls – would naturally arise from known design principles for compact loaders. To function as a front-end loader on a machine with a rear-mounted standing operator platform, the loader mechanism and its pivot points must be positioned forward of the operator. Furthermore, the patent itself states that a "low-profile mainframe" improves visibility and lowers the center of gravity, enhancing stability. To achieve these recognized benefits, a POSA would inherently design the attachment (pivot) points for the loader linkages as low as practicable on the mainframe. This would almost certainly place them below the ergonomically positioned operator controls and forward of the rear platform. Therefore, the claimed arrangement of pivot points is an obvious design choice for optimizing a compact tool carrier for stability and operator ergonomics.

Independent Claim 7 Analysis

Claim 7 describes a loader apparatus for standing or walk-behind operator control with a rear control station, a loader with a vertical lift path, and a rigid frame. It specifies a first linkage, an actuator, and a second linkage all pivotally attached to the first side of the rigid frame and to the loader. The claim focuses on the spatial arrangement of these six pivot points during loader movement: they are either disposed between the operator controls and the bottom of the rigid frame, or forward of the control station, or both.

Combination of Prior Art:

1. US20090116943A1 (Messeri's P.A.) provides a compact tracked vehicle for operation by a standing operator.
2. US6325589B1 (Daewoo Heavy Industries Ltd.) discloses a loader with a controlled vertical path using multiple linkages. The use of multiple linkages (e.g., a four-bar linkage system) to achieve a desired lift path is a well-known mechanical engineering principle in loader design, including the use of hydraulic cylinders as part of the linkage system.
3. US5169278A (Clark Equipment Company) further illustrates vertical lift loader booms with linkages.

Motivation for Combination and Obviousness:
A POSA, seeking to enhance the functionality and ergonomics of a compact tool carrier (like that in Messeri's P.A.) for standing/walk-behind operation, would consider known loader mechanisms. Employing a multi-linkage system, such as a four-bar linkage (with an actuator serving as one link as shown in FIG. 5 of US10202266B2), is a common design choice for achieving a vertical or near-vertical lift path, which is desirable for efficiency and operating close to other structures, as explicitly noted in the patent.

The specific spatial limitations regarding the six pivot points being "between the operator controls and the bottom of the rigid frame and/or (2) disposed forward of the control station" are an inherent outcome of designing a compact machine with a rear operator station and a low-profile mainframe. As articulated for Claim 1, placing the loader and its pivot points forward of the operator is necessary for a front-end loader configuration. To achieve the "low-profile" and "lowered center of gravity" benefits highlighted by the patent, a POSA would naturally locate the mainframe pivot points as low as feasible. This would place them between the bottom of the frame and the operator controls (which are higher for ergonomic reach), and forward of the rear-mounted control station. Therefore, this combination of known elements and obvious design choices would render Claim 7 obvious.

Independent Claim 14 Analysis

Claim 14 defines a loader apparatus for standing or walk-behind operator control with a loader, loader support, a linkage, an actuator, and a drive mechanism with a rotational axis R. The key limitation is a quantitative one: the vertical distance between the rotational axis R and the forward-most pivot point (either the first or third pivot point) is less than 0.75 D5, where D5 is the vertical distance between the rotational axis R and the bottom of the first side of the loader support.

Combination of Prior Art:

1. US20090116943A1 (Messeri's P.A.) teaches a compact tracked vehicle for operation by a standing operator.
2. US6695568B2 (Clark Equipment Company) is titled "Low profile lift arm for small skid steer loader." This reference explicitly addresses the design goal of a low profile in loaders.
3. General knowledge in the art regarding drive mechanisms (tracks or wheels) and their rotational axes is widely available in numerous compact utility loaders (e.g., Dingo TX413, Bobcat Mini Track Loaders, Cat 252B Skid Steer Loader, Deere 318D Skid Steer, Kubota SVL75 Compact Track Loader, Toro Dingo, Vermeer 5450TX).

Motivation for Combination and Obviousness:
A POSA, designing a compact tool carrier with standing/walk-behind controls (e.g., Messeri's P.A.), and motivated to create a "low-profile" machine for improved stability and visibility (as a known design objective, and explicitly stated in US10202266B2), would be guided by the teachings of references like US6695568B2. This reference directly encourages the development of low-profile lift arms for small loaders.

To achieve a low profile and a low center of gravity, a POSA would recognize the importance of positioning heavy components and pivot points as low as possible relative to the drive mechanism's rotational axis. The mainframe (loader support) itself provides the structural base for these attachments. The quantitative limitation of the forward-most pivot point being less than 0.75 D5 (where D5 relates to the bottom of the mainframe) would be an outcome of routine engineering optimization to maximize stability and minimize height, given the known desire for "low-profile" designs. The patent itself provides ranges for these distances, stating, for example, that certain pivot distances (D2, D3, D4) are "less than about 1.5 times D1 or even less than about 0.75 times D1" and "less than about twice D5" with further reductions to "less than about 1.5 times D5" or "less than about 1.25 times D5". This demonstrates that adjusting these ratios is an expected design parameter within the art, and arriving at a specific improved ratio through routine experimentation for known benefits (stability, visibility) would be obvious.

Independent Claim 19 Analysis

Claim 19 describes a loader apparatus for standing or walk-behind operator control with a machine structure (mainframe and upper frame) defining a barrier guard, a rear control station, an actuator, a front linkage, and a rear linkage pivotally attached to the mainframe and loader. The claim specifies conditions for the front and rear linkage pivot points relative to the barrier guard: in the down position, the front linkage pivot point is within and/or forward of the barrier guard, and during upward travel, the rear linkage pivot point is also within and/or forward of the barrier guard.

Combination of Prior Art:

1. SAE J2752 (2010), "Surface Vehicle Recommended Practice, Personnel Protection—Compact Tool Carriers," is explicitly incorporated by reference in US10202266B2 and states that "the machine structure around the operator's area may be part of a barrier guard." This reference clearly teaches the concept and motivation for a barrier guard around the operator in compact tool carriers.
2. US20090116943A1 (Messeri's P.A.) provides a compact tracked vehicle for operation by a standing operator.
3. US5169278A (Clark Equipment Company) and US6325589B1 (Daewoo Heavy Industries Ltd.) describe loader mechanisms with multiple linkages for vertical lift.

Motivation for Combination and Obviousness:
A POSA, designing a compact tool carrier with a standing operator (e.g., Messeri's P.A.), would be strongly motivated to incorporate safety features, including a barrier guard around the operator area, as advised by industry standards like SAE J2752. This standard explicitly anticipates such guards. The patent itself acknowledges this, stating that the "upper frame 39 and mainframe 10 define the machine structure around the operator's area, wherein the perimeter of the machine structure...forms a barrier guard."

Once a rear-mounted barrier guard is in place for a standing operator, the placement of the front-mounted loader's linkages and their pivot points relative to this guard is largely a matter of functional design and compactness. For the loader to operate efficiently as a front-end device, its mechanisms must extend forward. However, in a compact design, it is also natural for some pivot points, especially the more rearward ones connecting to the mainframe, to be positioned relatively close to or even partially "within" the boundary of the barrier guard, particularly in the loader's down position, as depicted in FIGS. 2 and 3 and described in the patent (e.g., P6 being within the barrier guard). The subsequent movement of these pivot points (remaining within or moving forward) as the loader raises is a direct kinematic consequence of the chosen linkage geometry. Therefore, combining a compact tool carrier with standing operation, a known multi-linkage loader system, and an industry-standard safety barrier guard would lead to the described spatial relationships as a matter of routine engineering design driven by safety and compactness.

Independent Claim 25 Analysis

Claim 25 is similar to Claim 19 but simplifies the loader mechanism to "a linkage" and "an actuator." It claims that in the down position, the linkage pivot point is disposed within the barrier guard, and as the loader travels upwards, this pivot point is within and/or forward of the barrier guard.

Combination of Prior Art:

1. SAE J2752 (2010), for its teaching of a barrier guard in compact tool carriers.
2. US20090116943A1 (Messeri's P.A.) for a compact tracked vehicle with standing operator control.
3. The present patent itself states that "While the carrier 5 is shown with two loader linkages 46a, 50a on each side of the carrier 5, in other embodiments the carrier 5 includes a single linkage." This indicates that a single linkage design was an obvious or known alternative to the inventors.
4. US2774496A (Ottawa Steel Inc) teaches a "Tractor mounted high lift loader" that may involve simpler linkage systems.

Motivation for Combination and Obviousness:
If Claim 19 is obvious, Claim 25 is likewise obvious, especially given that the patent explicitly notes that a "single linkage" is a possible embodiment. A POSA designing a compact tool carrier (e.g., from Messeri's P.A.) with a barrier guard (as per SAE J2752) would easily incorporate a loader with a single linkage (a known variation for loader mechanisms, also acknowledged by the applicant).

The specific requirement that the single linkage pivot point is "disposed within the barrier guard" in the down position (and subsequently within/forward during travel) is an achievable and often desirable outcome of designing a compact machine where components are closely integrated for stability and compactness. The patent's own description of a "rear pivot point P6, positioned within the barrier guard" for a two-linkage system (FIGS. 2 and 3) shows that placing a rear pivot point of a loader within the operator's barrier guard area is a known and illustrated design choice for a compact machine. This would be a routine design consideration for a POSA aiming for a compact and stable loader system while adhering to safety standards.