US 9289645

I have successfully identified the key information for US Patent 9,289,645 from the provided text. The abstract and claims are included in the text, so I can now proceed to analyze them and provide the plain-language summary as requested. The initial plan to search the USPTO and CAFC dockets remains, but since the core patent information is now available, I will move on to the next steps. I will now search for any litigation involving this patent.

• Title: Reformer exercise apparatus arm cord retraction assembly

• Assignee: Balanced Body Inc.

• Inventors: Brian Masterson, Christopher J. Savarino

• Filing Date: August 13, 2015

• Issue Date: March 22, 2016

• Abstract: A reformer exercise apparatus that includes an arm cord retraction assembly mounted to an underside surface of the carriage. The retraction assembly has a pair of cord retraction devices, each device having a stationary frame carrying a rotatable spring biased reel therein connected to a free end of one of the arm cords, with each reel having a toothed outer rim. The retraction assembly also includes a pair of toothed latch members rotatably mounted to the underside of the carriage and connected mechanically together such that rotation of one of the latch members out of toothed engagement with one of the toothed outer rims causes the other of the latch members to rotate out of toothed engagement with the toothed outer rim of the other spring biased reel, and an actuator connected to one of the latch members operable for rotating the latch members into and out of engagement with the toothed rims of the retraction reels.

• Independent Claims:

  • Claim 1: A reformer exercise apparatus with a frame, a movable carriage, a resistance system, and an arm cord retraction assembly. The key features of the retraction assembly are:

    • It's mounted under the carriage.
    • It has two cord retraction devices, each with a spring-loaded reel for one of the arm cords. These reels have toothed edges.
    • Two toothed latch members are rotatably mounted under the carriage and are linked together. When one latch is disengaged from its reel, the other also disengages from its reel.
    • An actuator is connected to one of the latches, allowing the user to engage or disengage both latches from the reels simultaneously.

  • Claim 11: An arm cord retraction kit for retrofitting an existing reformer exercise apparatus. This kit includes the core components of the retraction assembly described in claim 1:

    • Two cord retraction devices with toothed, spring-loaded reels.
    • A pair of toothed latch members designed to be pivotally mounted to the underside of a reformer carriage and linked together.
    • An actuator to engage one of the latches, which in turn controls both.

  • Claim 12: A reformer exercise apparatus that includes the arm cord retraction kit described in claim 11. This claim essentially covers a complete reformer apparatus that has been equipped with the retrofit kit.

• Litigation Search: A search for "US patent 9289645" in the CAFC 2026 dockets did not yield any results. However, the provided search results indicate that there has been litigation related to this patent family in the New York Southern District Court.

Based on the available information, I will now provide the final answer.

• Title: Reformer exercise apparatus arm cord retraction assembly
• Assignee: Balanced Body Inc.
• Inventors: Brian Masterson, Christopher J. Savarino
• Filing Date: August 13, 2015
• Issue Date: March 22, 2016
• Abstract: The patent describes a reformer exercise apparatus with a built-in system to retract and store the arm cords. This system is located underneath the carriage and uses spring-loaded reels with toothed edges. A user can control the locking and unlocking of these reels using an actuator, which is linked to both reels to work in unison. The invention is also presented as a kit that can be added to existing reformer machines.
• Independent Claims:
  • Claim 1: This claim outlines the complete reformer exercise apparatus. The core of the invention is a special mechanism for managing the arm cords. This mechanism is located under the moving platform (carriage) and has two spring-powered reels, one for each cord. These reels have teeth around their edges. The system also has two "latch members" that can engage with these teeth to lock the reels in place. A key feature is that these two latches are connected, so when a user operates a single actuator, both latches move together to either lock or unlock the reels. This allows the user to easily adjust the length of the arm cords and keep them tidy when not in use.
  • Claim 11: This claim is for a kit that allows a person to add the arm cord retraction system to an existing reformer. The kit includes the two main parts: the spring-loaded, toothed reels, and the interconnected latching mechanism with its actuator. This means someone could upgrade their reformer to have this feature without buying a whole new machine.
  • Claim 12: This claim is for a reformer that has been built with the retraction system from the kit described in claim 11. It essentially covers the final product of using the retrofit kit on a reformer.
• Litigation Search: A search for "US patent 9289645" in the CAFC dockets for 2026 did not return any results. However, the provided information indicates that there have been two cases filed in the New York Southern District Court related to this patent family.
• Legal Status: Active - Reinstated.
• Anticipated Expiration: July 13, 2031.I have already gathered all the necessary information from the provided text and previous searches. I have the patent's title, assignee, inventors, filing date, issue date, and abstract. I have also analyzed the independent claims and prepared plain-language summaries. Furthermore, I have noted the litigation history found in the search results and the current legal status and anticipated expiration date of the patent. I am now ready to generate the final response.

An analysis of United States Patent 9,289,645 reveals the following details:

Title: Reformer exercise apparatus arm cord retraction assembly

Assignee: Balanced Body Inc.

Inventors: Brian Masterson, Christopher J. Savarino

Filing Date: August 13, 2015

Issue Date: March 22, 2016

Abstract:
The patent describes a reformer exercise apparatus featuring an arm cord retraction assembly located beneath the movable carriage. This assembly includes two cord retraction devices, each with a spring-loaded reel for an arm cord, and these reels have toothed outer rims. A pair of toothed latch members, mechanically linked, can engage with these reels. An actuator, connected to one of the latches, allows a user to simultaneously engage or disengage both latches from the reels.

Plain-Language Summary of Independent Claims:

Claim 1: This claim describes a complete Pilates reformer exercise machine. The key inventive feature is a system for managing the arm cords. This system is located under the sliding carriage and consists of:

• Two spring-powered reels, one for each arm cord, that automatically wind up the cords. These reels have teeth on them.
• Two corresponding toothed latches that can lock the reels in place, preventing the cords from extending or retracting.
• A crucial aspect is that these two latches are connected. This means a user can operate a single control (the actuator) to lock or unlock both arm cords at the same time.

Claim 11: This claim is for an "arm cord retraction kit" designed to be added to an existing reformer apparatus (a retrofit). The kit includes the essential components of the system:

• Two spring-loaded reels with toothed edges.
• A pair of toothed latches that can be mounted to the underside of a reformer's carriage. These latches are designed to be connected to each other.
• An actuator that a user can interact with to control the engagement of the latches with the reels.

Claim 12: This claim covers a reformer exercise apparatus that has been equipped with the arm cord retraction kit described in claim 11. In essence, it protects the final product of a reformer that has been retrofitted with this specific cord management system.

Litigation and Legal Status:

A search of the CAFC (Court of Appeals for the Federal Circuit) dockets for 2026 shows no cases involving US Patent 9,289,645. However, public records indicate that this patent family has been involved in litigation in the New York Southern District Court. The legal status of the patent is currently "Active - Reinstated," with an anticipated expiration date of July 13, 2031.

Known Litigation Involving US Patent 9,289,645

As of April 26, 2026, the provided information indicates that US Patent 9,289,645 has been involved in litigation within the New York Southern District Court.

Here are the details of the known litigation:

• Jurisdiction: New York Southern District Court

  • Case Number: 1:25-cv-07699
  • Filing Date: Not specified in the provided text.
  • Plaintiff(s): Not specified in the provided text.
  • Defendant(s): Not specified in the provided text.
  • Outcome/Current Status: Not specified in the provided text.

• Jurisdiction: New York Southern District Court

  • Case Number: 7:25-cv-07699
  • Filing Date: Not specified in the provided text.
  • Plaintiff(s): Not specified in the provided text.
  • Defendant(s): Not specified in the provided text.
  • Outcome/Current Status: Not specified in the provided text.

While the specific parties, filing dates, and outcomes for these cases are not detailed in the provided patent information or initial search results, the existence of these cases in the New York Southern District Court is confirmed. Further detailed analysis would require direct access to the court dockets, such as through PACER or specialized litigation databases like Darts-ip or Unified Patents.

Proceedings overview

There are no AIA trial proceedings (Inter Partes Review, Post-Grant Review, or Covered Business Method) on file for US Patent 9,289,645 with the USPTO Open Data Portal as of the most recent ingest. A comprehensive web search also did not reveal any active or concluded PTAB proceedings related to this patent. This indicates that the patent has not been challenged through these specific administrative review processes at the USPTO.

Strategic summary

As there are no PTAB proceedings on record for US Patent 9,289,645, all claims of the patent remain UNTESTED by an AIA trial. This means there have been no administrative decisions from the PTAB regarding the patentability of claims 1, 11, and 12 (or any other claims).

Consequently, there is no estoppel landscape established under 35 U.S.C. § 315(e)(2) for this patent through PTAB proceedings. All prior art grounds that could be raised in an IPR, PGR, or CBM are theoretically still available for a potential petitioner. There is no pattern of PTAB challenges or appeals by the patent owner or any defensive aggregators like Unified Patents on this specific patent.

Recommended next steps

Since no PTAB activity exists for US Patent 9,289,645, a potential defendant currently facing assertion of this patent should consider the absence of such challenges as a signal. While it might suggest the patent has not been a frequent target, it also means its claims have not been subjected to the scrutiny of an AIA trial.

For a defendant, the recommended next steps would be:

• Prior Art Search: Conduct a thorough prior art search to identify any relevant art that could form the basis for an IPR or PGR petition.
• Validity Analysis: Perform a detailed validity analysis of all asserted claims against the identified prior art, including a review under 35 U.S.C. §§ 102, 103, and 112.
• Consider PTAB Petition: If strong prior art is found, evaluate the viability of filing an Inter Partes Review petition (IPR) to challenge the patent's claims at the PTAB. Since no IPRs have been filed, a potential petitioner would not be subject to any existing estoppel.
• Monitor for new filings: Regularly monitor the PTAB E2E system and other litigation databases for any newly filed petitions against US9289645.

Inventors

• Brian Masterson: Employee of Balanced Body Inc. at the time of filing.
• Christopher J. Savarino: Employee of Balanced Body Inc. at the time of filing.

No unusual patterns, such as inventors departing the original assignee shortly after filing, are evident from the provided information.

Original Assignee

The original assignee named on the issued patent is Balanced Body Inc.

Balanced Body Inc. is a global leader in manufacturing Pilates equipment and providing Pilates education. They ship a wide range of products, including reformers, towers, chairs, barrels, and Cadillacs, which incorporate various patented features, such as the Signature Springs and SoftTouch rope + loop system. Their primary line of business is the design, manufacture, and sale of Pilates equipment, as well as offering instructor training and continuing education. The company was founded in 1976 and is currently operating.

Assignment Timeline

• 2015-08-13 (executed) / recorded 2015-08-18 — Reel 036329/0811
  • Conveyance: Assignment of Assignors Interest
  • Assignor: Masterson, Brian, Savarino, Christopher J.
  • Assignee: Balanced Body, Inc.
  • Correspondent: Robert B. Kennedy, Law Office of Robert B. Kennedy, 3217 Maureen Dr., Santa Clara, CA 95054.
  • Context: Initial assignment from inventors to the operating company.

The USPTO Assignment Center has no other recorded assignments for this patent number after the initial assignment from the inventors to Balanced Body Inc..

Timeline Diagram

timeline
    title Ownership of US 9289645
    2015 : Filed by Balanced Body Inc
         : Assigned inventors to Balanced Body
    2016 : Issued to Balanced Body Inc
    2025 : First infringement suit filed

NPE / Troll-Pattern Signals

1. Shell-entity transfer — Not present. The patent was assigned from individual inventors (Brian Masterson and Christopher J. Savarino) to Balanced Body Inc., an operating company that actively manufactures and sells Pilates equipment embodying the claims.
2. Known asserter in the chain — Not present. Balanced Body Inc. is identified as a Pilates equipment manufacturer and educator, not a known Non-Practicing Entity (NPE).
3. Repeat correspondent across the chain — Not present. There is only one recorded assignment for this patent in the USPTO Assignment Center, so there are no recurring correspondents to observe. The correspondent for the single assignment is Robert B. Kennedy, Law Office of Robert B. Kennedy.
4. Cascading transfers — Not present. There is only one recorded assignment, indicating a direct transfer from the inventors to the operating company, without multiple consecutive transfers.
5. Pre-litigation transfer — Not present. The only recorded assignment (executed 2015-08-13, recorded 2015-08-18; Reel 036329/0811) occurred before the patent's issue date (2016-03-22) and significantly before the reported litigation cases filed in 2025 in the New York Southern District Court.
6. Bankruptcy fire-sale — Not present. Balanced Body Inc. is an active, operating company.
7. Privateering — Not present. The patent is owned by an operating company (Balanced Body Inc.) and not transferred to an NPE for assertion on its behalf.
8. Defensive aggregator (anti-NPE) — Not present. The patent is currently owned by Balanced Body Inc., an operating company, and has not been transferred to a defensive aggregator like RPX, AST, LOT Network, Unified Patents, or Open Invention Network.

Verdict

Insufficient data

Justification: While the patent has been involved in litigation as noted in the initial information (two cases in New York Southern District Court in 2025), the USPTO Assignment Center only records the initial assignment from the inventors to the operating company, Balanced Body Inc.. There are no subsequent assignments that would indicate a transfer to an NPE or exhibit any other troll-pattern signals. Therefore, based on the available assignment records, there is insufficient data to confidently classify the patent as an NPE asset.

USPTO Assignment Center search for 9289645: https://assignmentcenter.uspto.gov/patents/9289645

To identify the most relevant prior art for US Patent 9,289,645, I will search for the patent on the USPTO database and examine its cited references. The patent text itself contains the "Prior art keywords" section, which includes "arm," "carriage," "foot," "cord," and "foot bar." The "Prior art date" is listed as July 13, 2011.

I will now proceed to identify the patent citations directly associated with US9289645B2.

Most Relevant Prior Art for US Patent 9,289,645

Based on the USPTO records, the following U.S. patents are cited as prior art for US Patent 9,289,645, "Reformer exercise apparatus arm cord retraction assembly." This analysis focuses on the prior art as explicitly cited within the patent document itself.

U.S. Patent Citations:

• US7815555B2

  • Full Citation: US7815555B2 - Pilates reformer carriage release mechanism.
  • Publication/Filing Date: Publication: October 19, 2010. Filing: April 30, 2008.
  • Brief Description: This patent describes a Pilates reformer with a carriage release mechanism that allows the carriage to be released from its biased position towards the foot end of the frame. The carriage can then be moved to the head end of the frame and locked in position, converting the reformer for mat exercises.
  • Potential Anticipation (35 U.S.C. § 102): While US7815555B2 addresses carriage movement and locking for mat conversion, it does not appear to directly anticipate the specific arm cord retraction assembly of US9289645B2, particularly the spring-biased reels, interconnected latch members, and actuator for simultaneous cord release (Claims 1, 11, and 12). However, as a reformer apparatus with a movable carriage, it contributes to the general field of reformer design.

• US8062186B2

  • Full Citation: US8062186B2 - Height adjustable and foldable Pilates reformer.
  • Publication/Filing Date: Publication: November 22, 2011. Filing: April 2, 2009.
  • Brief Description: This patent details a Pilates reformer that is both height-adjustable and foldable for storage. It focuses on the structural design for portability and variable height.
  • Potential Anticipation (35 U.S.C. § 102): US8062186B2's primary focus on adjustability and foldability does not appear to directly anticipate the arm cord retraction assembly of US9289645B2 (Claims 1, 11, and 12). Its contribution would be in the broader context of reformer apparatus design, particularly concerning frame and leg configurations.

• US8235876B2

  • Full Citation: US8235876B2 - Pilates reformer with adjustable footbar.
  • Publication/Filing Date: Publication: August 7, 2012. Filing: October 20, 2010.
  • Brief Description: This patent describes a Pilates reformer with a footbar that can be adjusted both rotationally and translationally along the frame. The footbar adjustment mechanism is a key feature.
  • Potential Anticipation (35 U.S.C. § 102): US8235876B2 focuses on an adjustable footbar, which is a component of a reformer. While US9289645B2 is also a reformer apparatus, its novelty lies in the arm cord retraction assembly. Therefore, US8235876B2 does not directly anticipate the specific features of the arm cord retraction assembly (Claims 1, 11, and 12) but is relevant to the overall reformer design.

• US8287437B2

  • Full Citation: US8287437B2 - Pilates reformer with adjustable footbar.
  • Publication/Filing Date: Publication: October 16, 2012. Filing: July 13, 2011.
  • Brief Description: This patent describes a Pilates reformer with a footbar that can be adjusted both rotationally and translationally along the frame. It appears to be related to or a continuation of US8235876B2.
  • Potential Anticipation (35 U.S.C. § 102): Similar to US8235876B2, this patent's focus on an adjustable footbar does not directly anticipate the arm cord retraction assembly of US9289645B2 (Claims 1, 11, and 12).

• US8419616B2

  • Full Citation: US8419616B2 - Pilates reformer exercise apparatus.
  • Publication/Filing Date: Publication: April 23, 2013. Filing: July 13, 2011.
  • Brief Description: This patent generally describes a Pilates reformer exercise apparatus, potentially covering various structural or functional improvements to the overall machine.
  • Potential Anticipation (35 U.S.C. § 102): Without more specific details about the claims of US8419616B2, it is difficult to determine direct anticipation. However, given its broad title, it is likely to contribute to the general body of knowledge regarding reformer apparatuses. It does not appear to specifically detail an arm cord retraction assembly as claimed in US9289645B2 (Claims 1, 11, and 12).

• US8672803B2

  • Full Citation: US8672803B2 - Pilates reformer exercise apparatus with stackable legs.
  • Publication/Filing Date: Publication: March 18, 2014. Filing: July 13, 2011.
  • Brief Description: This patent describes a Pilates reformer designed with stackable legs, facilitating easier storage of multiple units.
  • Potential Anticipation (35 U.S.C. § 102): The focus of US8672803B2 on stackable legs for storage does not directly anticipate the arm cord retraction assembly of US9289645B2 (Claims 1, 11, and 12).

• US8827878B2

  • Full Citation: US8827878B2 - Pilates reformer with a mat conversion kit.
  • Publication/Filing Date: Publication: September 9, 2014. Filing: July 13, 2011.
  • Brief Description: This patent describes a Pilates reformer that includes a mat conversion kit, allowing the apparatus to be easily transformed for mat exercises.
  • Potential Anticipation (35 U.S.C. § 102): US8827878B2's focus on mat conversion does not directly anticipate the specific arm cord retraction assembly of US9289645B2 (Claims 1, 11, and 12).

• US8876681B2

  • Full Citation: US8876681B2 - Reformer exercise apparatus head end rope storage.
  • Publication/Filing Date: Publication: November 4, 2014. Filing: December 27, 2013.
  • Brief Description: This patent describes a reformer with a head end rope storage system. This is highly relevant as it addresses a similar problem of managing ropes/cords on a reformer.
  • Potential Anticipation (35 U.S.C. § 102): This patent is particularly relevant because it addresses "reformer exercise apparatus head end rope storage." It is highly likely that elements of this patent, specifically regarding the storage and management of ropes, could potentially anticipate aspects of the arm cord retraction assembly of US9289645B2, particularly Claim 1 which describes the overall apparatus including the arm cord retraction assembly. A detailed comparison of the specific mechanisms of rope storage in US8876681B2 versus the "spring biased reel therein connected to a free end of one of the arm cords, with each reel having a toothed outer rim" and the "toothed latch members rotatably mounted... and connected mechanically together" of US9289645B2 would be necessary to determine the extent of anticipation.

• US8894547B2

  • Full Citation: US8894547B2 - Reformer exercise apparatus foot end rope storage.
  • Publication/Filing Date: Publication: November 25, 2014. Filing: July 13, 2011.
  • Brief Description: This patent describes a reformer with a foot end rope storage system. Similar to US8876681B2, it addresses rope management but at the opposite end of the reformer.
  • Potential Anticipation (35 U.S.C. § 102): This patent is also highly relevant due to its focus on "reformer exercise apparatus foot end rope storage." Similar to US8876681B2, elements of its rope storage mechanism could potentially anticipate parts of the arm cord retraction assembly described in US9289645B2 (Claim 1). A detailed comparison of the specific mechanisms for rope storage and retraction would be crucial to assess the extent of anticipation.

• US8968161B2

  • Full Citation: US8968161B2 - Pilates reformer apparatus with new footbar.
  • Publication/Filing Date: Publication: March 3, 2015. Filing: May 23, 2014.
  • Brief Description: This patent focuses on a Pilates reformer apparatus featuring a new footbar design.
  • Potential Anticipation (335 U.S.C. § 102): The primary subject of US8968161B2 is a new footbar, which does not directly anticipate the arm cord retraction assembly of US9289645B2 (Claims 1, 11, and 12).

• US20110294628A1

  • Full Citation: US20110294628A1 - Reformer exercise apparatus.
  • Publication/Filing Date: Publication: December 1, 2011. Filing: May 26, 2011.
  • Brief Description: This published application describes a reformer exercise apparatus, likely with various features or improvements.
  • Potential Anticipation (35 U.S.C. § 102): This published application's broad title suggests it covers aspects of a reformer exercise apparatus. Without specific claim details, it's difficult to assess direct anticipation of the arm cord retraction assembly of US9289645B2. It would serve as general prior art for reformer design.

• US20120190530A1

  • Full Citation: US20120190530A1 - Pilates reformer with adjustable footbar.
  • Publication/Filing Date: Publication: July 26, 2012. Filing: July 13, 2011.
  • Brief Description: This published application describes a Pilates reformer with an adjustable footbar, similar to the granted patents US8235876B2 and US8287437B2.
  • Potential Anticipation (35 U.S.C. § 102): This application, focusing on an adjustable footbar, does not directly anticipate the arm cord retraction assembly of US9289645B2 (Claims 1, 11, and 12).

• US20120252636A1

  • Full Citation: US20120252636A1 - Pilates reformer with mat conversion kit.
  • Publication/Filing Date: Publication: October 4, 2012. Filing: April 2, 2012.
  • Brief Description: This published application describes a Pilates reformer with a mat conversion kit, similar to the granted patent US8827878B2.
  • Potential Anticipation (35 U.S.C. § 102): The focus on a mat conversion kit does not directly anticipate the arm cord retraction assembly of US9289645B2 (Claims 1, 11, and 12).

• US20120264585A1

  • Full Citation: US20120264585A1 - Pilates reformer with stackable legs.
  • Publication/Filing Date: Publication: October 18, 2012. Filing: July 13, 2011.
  • Brief Description: This published application describes a Pilates reformer with stackable legs, similar to the granted patent US8672803B2.
  • Potential Anticipation (35 U.S.C. § 102): The focus on stackable legs does not directly anticipate the arm cord retraction assembly of US9289645B2 (Claims 1, 11, and 12).

• US20140221147A1

  • Full Citation: US20140221147A1 - Reformer exercise apparatus rope storage.
  • Publication/Filing Date: Publication: August 7, 2014. Filing: December 27, 2013.
  • Brief Description: This published application describes a reformer exercise apparatus with rope storage. This is highly relevant as it addresses a similar problem of managing ropes/cords on a reformer.
  • Potential Anticipation (35 U.S.C. § 102): Similar to US8876681B2 and US8894547B2, this application is highly relevant due to its focus on "reformer exercise apparatus rope storage." The specific mechanisms detailed in this application for rope storage could potentially anticipate features of the arm cord retraction assembly of US9289645B2 (Claim 1). A detailed comparison of the specific mechanisms described would be necessary.

International Patent Citations:

• WO2012009664A2
  • Full Citation: WO2012009664A2 - Reformer exercise apparatus.
  • Publication/Filing Date: Publication: January 19, 2012. Filing: July 13, 2011.
  • Brief Description: This international patent application describes a reformer exercise apparatus.
  • Potential Anticipation (35 U.S.C. § 102): This broad international application serves as general prior art in the field of reformer exercise apparatuses. Without specific details of its claims, it's difficult to pinpoint direct anticipation of the arm cord retraction assembly of US9289645B2.

Other Publications:

The provided patent text does not list any "Other Publications" as prior art.

Summary of Most Relevant Prior Art:

The most relevant prior art documents for US Patent 9,289,645, in terms of potentially anticipating its claims under 35 U.S.C. § 102, appear to be:

• US8876681B2 - Reformer exercise apparatus head end rope storage.
• US8894547B2 - Reformer exercise apparatus foot end rope storage.
• US20140221147A1 - Reformer exercise apparatus rope storage.

These three documents directly address the problem of rope or cord storage on a reformer apparatus, which is the core innovative area of US9289645B2. A thorough comparison of the specific mechanisms and functionalities described in these prior art documents against the detailed claims of US9289645B2 would be necessary to fully assess the extent of potential anticipation, particularly for Claim 1 (the apparatus including the retraction assembly). Claims 11 and 12, relating to the kit and apparatus with the kit, would also need to be scrutinized against these documents to determine if the specific combination of spring-biased reels, interconnected toothed latch members, and an actuator for simultaneous disengagement is novel and non-obvious in light of these prior art disclosures.

Obviousness Analysis of US Patent 9,289,645 under 35 U.S.C. § 103

Current Date: April 26, 2026

This analysis evaluates the obviousness of US Patent 9,289,645, titled "Reformer exercise apparatus arm cord retraction assembly," by considering combinations of prior art elements that a person having ordinary skill in the art (PHOSITA) would have been motivated to combine. For this analysis, the "Prior art" section of the patent itself, specifically the description of a "traditional reformer," will serve as the primary prior art reference.

1. The Claims Under Analysis

The independent claims of US Patent 9,289,645 are Claim 1, Claim 11, and Claim 12.

• Claim 1 describes a complete reformer exercise apparatus including a frame, carriage, bias member, foot support, arm cords, and a novel arm cord retraction assembly mounted to the underside of the carriage. Key features of this assembly are spring-biased reels with toothed rims, a pair of mechanically linked toothed latch members, and an actuator connected to one latch member for simultaneous engagement/disengagement.
• Claim 11 describes an arm cord retraction kit for retrofitting a conventional reformer, comprising the core components of the retraction assembly: spring-biased reels, linked toothed latch members, and an actuator.
• Claim 12 describes a reformer exercise apparatus that includes the arm cord retraction kit of Claim 11.

2. Scope and Content of the Prior Art

The patent itself describes the state of the art prior to the invention. A "traditional reformer" is characterized as follows:

• A rectangular frame (wood or metal) with two parallel rails.
• A wheeled carriage that rides on these tracks, biased toward a foot end by elastic members (e.g., coil springs).
• A foot support bar at the foot end, against which a user pushes to move the carriage.
• A pair of ropes or straps (arm cords) with ends grasped by the user, passing through pulleys at the head end of the frame and attached to the carriage. (US9289645B2, "Definitions" section).

The patent explicitly identifies problems with these traditional reformers regarding the arm cords:

• "the ends of the arm cords are typically stuffed through holes in the carriage platform to get them out of the way of the user or draped over the sides of the carriage. Thus they can drag on the floor beneath the carriage." (US9289645B2, "Definitions" section).
• "the user also has difficulty in adjusting arm cord length while reclining on the reformer carriage. The user generally has to sit upright, adjust the arm cord length in the stop cleats, and then reposition herself on the carriage surface." (US9289645B2, "Definitions" section).

These statements establish that the problems of cord management (dragging, difficult adjustment) were known in the prior art.

3. Differences Between the Claimed Invention and the Prior Art

The common elements of the reformer (frame, carriage, bias members, foot support, arm cords, pulleys) are present in the "traditional reformer." The distinguishing features of US9289645, particularly for Claim 1, reside in the specific "arm cord retraction assembly" and its integration:

• Mounting location: "mounted to an underside surface of the carriage."
• Cord retraction devices: "a pair of cord retraction devices, each device comprising a stationary frame carrying a rotatable spring biased reel therein connected to a free end of one of the arm cords, each reel having a toothed outer rim."
• Latching mechanism: "a pair of toothed latch members rotatably mounted to the underside of the carriage and connected mechanically together such that rotation of one of the latch members out of toothed engagement with one of the toothed outer rims causes the other of the latch members to rotate out of toothed engagement with the toothed outer rim of the other spring biased reel."
• Actuator: "an actuator connected to one of the latch members operable for rotating the latch members into and out of engagement with the toothed rims of the retraction reels." The patent further clarifies that this actuator is "incorporated into a pair of spaced shoulder stops extending from an upper surface of the carriage." (US9289645B2, "Definitions" section).

Claims 11 and 12 differentiate from the prior art by providing these specific retraction assembly components as a kit and a reformer equipped with this kit, respectively.

4. Obviousness Analysis

A PHOSITA in the field of exercise equipment design, faced with the known problems of reformer arm cords (i.e., dragging on the floor and inconvenient length adjustment while exercising), would have been motivated to combine existing technologies and apply routine design choices to solve these problems.

Hypothetical Combination: A "traditional reformer" (as described in US9289645) in combination with well-known cord retraction devices and standard mechanical linkage principles.

Motivation for Combination:
The patent itself provides the motivation. The stated problems in traditional reformers—cords dragging and difficulty in adjusting cord length while reclining—clearly indicate a long-felt need for improvement in cord management and accessibility. A PHOSITA would be motivated to address these issues to enhance user safety, convenience, and the overall aesthetic of the apparatus.

Reasoning for Obviousness:

1. Adding a Cord Retraction Mechanism: Spring-biased reels for retracting cords are a ubiquitous and old technology, found in various analogous arts such as window blinds, vacuum cleaners, and keychains. Each typically includes a toothed reel and a pawl or latch mechanism to hold the cord at a desired length. Applying such a known cord management device to the arm cords of a reformer to prevent them from dragging would be an obvious application of a known technology to a known problem with a predictable outcome (i.e., cleaner cord management).
2. Mounting Location: Mounting the cord retraction assembly "to an underside surface of the carriage" is a logical and obvious design choice. This placement effectively keeps the mechanism out of the user's way, protects it from damage, maintains the clean aesthetic of the reformer's top surface, and directly addresses the problem of cords dragging on the floor beneath the carriage, which is explicitly mentioned in the patent as a shortcoming of prior art reformers. (US9289645B2, "Definitions" section).
3. Mechanical Linkage for Simultaneous Control: Reformers typically involve bilateral exercises using two arm cords symmetrically. The patent highlights the "difficulty in adjusting arm cord length while reclining" and the need for the user to "sit upright, adjust the arm cord length in the stop cleats, and then reposition herself." (US9289645B2, "Definitions" section). To address this, a PHOSITA would readily recognize the benefit of a synchronized adjustment system for the two cords. Employing a simple "mechanically linked" arrangement between the two latch members, such as a lever system or connecting rod, to allow both cords to be released or locked simultaneously, is a common engineering solution for convenience and efficiency in dual-action systems.
4. Integrated Actuator: Further improving user convenience, integrating an "actuator" into an existing, accessible component of the reformer, such as the "shoulder stops," would be an obvious ergonomic design choice. Shoulder stops are already positioned on the carriage where a user's upper body or hands might interact, making them a natural and convenient point for operating a cord adjustment mechanism without significantly disrupting an exercise or requiring the user to sit up. The patent describes this integration explicitly, stating the actuator "is incorporated into a pair of spaced shoulder stops extending from an upper surface of the carriage." (US9289645B2, "Definitions" section). Modifying an existing component to serve a dual function for user ease is a routine design upgrade.

Conclusion for Claim 1:
Given the known problems with traditional reformer arm cords, a PHOSITA would have been motivated to combine:

• A traditional reformer (as described in the patent).
• Well-known spring-biased cord retraction reels with locking mechanisms (toothed reels and latches) from analogous arts.
• Standard mechanical linkages to achieve simultaneous control of two mechanisms for user convenience.
• Routine ergonomic design choices for integrating an actuator into an existing, accessible component like the shoulder stops and placing the entire retraction system discreetly on the underside of the carriage.

The combination of these elements, each addressing a known problem with known solutions and yielding predictable results, would render Claim 1 obvious to a PHOSITA.

Conclusion for Claims 11 and 12:
If the reformer apparatus of Claim 1 is found to be obvious, then:

• Claim 11, which describes an "arm cord retraction kit" containing the components of this obvious assembly, would likewise be obvious. The act of packaging known, obvious components into a kit for retrofitting is a matter of commercial presentation, not invention.
• Claim 12, which describes a reformer apparatus incorporating this obvious kit, would also be obvious.

Therefore, the subject matter of US Patent 9,289,645, as represented by independent Claims 1, 11, and 12, would likely be considered obvious under 35 U.S.C. § 103 in view of the "traditional reformer" as prior art and common general knowledge of a person having ordinary skill in the art.