US 11589969

Here's a concise summary of US Patent 11589969:

US Patent 11589969 Summary

• Title: Intraoral device with mesh
• Assignee: Solmetex LLC (Original Assignee); Current Assignee: Incept Inc, Solmetex LLC
• Inventors: Thien Nguyen, Tam Thanh Pham
• Filing Date: March 27, 2014
• Issue Date: February 28, 2023
• Abstract: A dental mouthpiece designed for attachment to a high-suction dental adapter, providing chair-side, hands-free suction and isolation during dental procedures. The mouthpiece includes a main body, a cheek retractor, and a suction connector, which may be molded as a single piece, preferably by injection molding. Made from a flexible, translucent, high heat-resistant, and autoclavable material like silicone, the mouthpiece is reusable. The main body features an enclosed pocket with perforated anterior, posterior, and side walls (forming a mesh), and a longitudinal slit on the anterior wall, facilitating the suction of air, fluids, and debris. An internal wave-shaped bridge structure on the posterior wall maintains separation between the anterior and posterior walls during suction, with troughs allowing fluid passage.

Plain-Language Overview of Independent Claims:

• Claim 1: This claim describes a dental mouthpiece with a main body shaped like a pocket. This pocket has holes (perforations) that lead to an open interior space. One end of the pocket is narrower than the other. The pocket is formed by a front wall and a back wall, which are connected by a side wall. The back wall has a wave-shaped "bridge structure" with several bumps (protrusions) that stick out from its inside surface. These bumps span the distance between the front and back walls, but they are not attached to the front wall. The wave shape includes peaks (crests) and valleys (troughs). The distance between the front and back walls is less than their overall width. The narrower end of the pocket has a "transition portion" that bends flexibly and connects to a cheek retractor, and this transition portion also has perforations.
• Claim 16: This claim outlines a dental mouthpiece that includes a cheek retractor connected to one end of a main body portion. The main body is designed as a pocket with perforations leading to an interior open space. This pocket is defined by a front wall, a back wall, and a connecting side wall. The back wall contains a "bridge structure" with multiple wave-shaped protrusions that extend from its interior surface towards the front wall, but are not attached to it. The pocket's end connected to the cheek retractor is a flexible "transition portion." At the opposite end of the main body, there's a suction connector portion designed to link to a vacuum source, allowing fluids to be drawn from the pocket's interior.
• Claim 19: This claim describes a dental mouthpiece comprising a main body portion that forms a pocket, partially enclosing an inner space. The pocket has a first wall with perforations communicating with the interior space, and a second wall matching the first wall's shape. The second wall features a "bridge structure" with wave-shaped protrusions that extend from its interior surface towards the first wall. A connecting wall joins the edges of the first and second walls. The mouthpiece also includes a suction connector portion at one end of the main body, configured to connect to a vacuum source, and a cheek retractor connected to the opposite end of the main body.

USPTO Database Search:
The details provided above (title, assignee, inventors, filing date, issue date, and abstract) are directly sourced from the Google Patents entry for US11589969B2, which is derived from USPTO records. The patent's legal status is "Active," and it was granted on February 28, 2023.

CAFC 2026 Dockets Search:
A general search of the U.S. Court of Appeals for the Federal Circuit (CAFC) scheduled cases for April, May, and June 2026 did not directly reveal any cases specifically listing patent number 11589969. While the patent information indicates "Family has litigation" and mentions a "PTAB case IPR2025-01020 filed (Not Instituted - Procedural)" and a "US case filed in Michigan Western District Court," these are not direct CAFC docket entries. PTAB decisions can be appealed to the CAFC, but no such appeal is explicitly identified in the general CAFC schedules.

Known litigation involving US patent 11589969 includes the following:

1. PTAB Case

   • Plaintiff(s): Ascentcare Dental Products, Inc. (Petitioner)
   • Defendant(s): Solmetex, LLC (Patent Owner)
   • Jurisdiction: Patent Trial and Appeal Board (PTAB)
   • Case Number: IPR2025-01020
   • Filing Date: July 15, 2025
   • Outcome or Current Status: Not Instituted - Procedural

2. US District Court Case

   • Plaintiff(s): Not explicitly stated in the provided patent text or search results.
   • Defendant(s): Not explicitly stated in the provided patent text or search results.
   • Jurisdiction: Michigan Western District Court
   • Case Number: 1:24-cv-00954
   • Filing Date: 2024 (specific date not available in provided data)
   • Outcome or Current Status: Ongoing (no outcome explicitly stated)

Proceedings overview

One Inter Partes Review (IPR) proceeding has been filed against US Patent 11589969. This proceeding resulted in a discretionary denial of institution, meaning no claims were invalidated. This gives a defendant a stronger defensive posture, as the patent owner successfully defended against an IPR challenge at the institution stage.

IPR2025-01020 — Ascentcare Dental Products, Inc. v. Solmetex, LLC

• Type: Inter Partes Review
• Filed: 2025-05-20
• Status: Discretionary Denial. The petition was not instituted for trial.
• Judge panel: Administrative Judge Coke Morgan Stewart is associated with the case. However, according to USPTO policy effective from October 17, 2025, institution determinations in IPR and PGR cases, covering both discretionary and merits considerations, are personally made by the Director, with routine decisions issued as summary notices.
• Petition grounds: Ascentcare Dental Products, Inc. (Petitioner) challenged claims of US Patent 11589969, arguing for their unpatentability. The petition included arguments concerning the claim term "wave shape" in the independent claims, with the Petitioner asserting that prior art, such as Black and Baughan, teaches "square waves," which would render the claims invalid. These arguments typically fall under 35 U.S.C. §§ 102 (anticipation) or 103 (obviousness).
• Institution decision: Denied on 2025-10-10. The denial was discretionary, indicated by the status "Discretionary Denial" and the "Not Instituted - Procedural" note on the Google Patents page for US11589969. This means the decision was based on factors other than the merits of the prior art arguments, such as the Fintiv factors (involving parallel district court litigation) or the "settled expectations" doctrine, which considers how long a patent has been issued and unchallenged. The specific reasoning for this particular discretionary denial is not explicitly detailed in the publicly available snippets beyond these general policy contexts.
• Final Written Decision: Not issued, as the petition for institution was denied.
• Settlement / termination: The proceeding was terminated on 2025-10-10 following the denial of institution. There is no indication of a settlement.
• Appeal: No appeal to the Federal Circuit was possible, as no Final Written Decision was issued.
• Defensive value: The patent owner prevailed at the institution stage. This means that Ascentcare Dental Products, Inc. (and potentially their privies) is estopped under 35 U.S.C. § 315(e)(1) from challenging claims of US11589969 in district court or the ITC on any ground that was raised or reasonably could have been raised in this IPR. For other potential defendants, this indicates that the patent survived a PTAB challenge, and an IPR-based defense targeting the same grounds of unpatentability will be more challenging.

Strategic summary

All claims of US Patent 11589969 remain SUSTAINED as no claims were invalidated. The single IPR filed against the patent, IPR2025-01020, resulted in a discretionary denial of institution, meaning the merits of the unpatentability challenge were not decided by the PTAB. Consequently, all claims of the patent are considered untested on their merits at the PTAB.

The estoppel landscape is primarily relevant for Ascentcare Dental Products, Inc. and its privies. Under 35 U.S.C. § 315(e)(1), they are barred from asserting in any other forum any ground of unpatentability that they raised or reasonably could have raised during IPR2025-01020. For other potential defendants, the grounds raised by Ascentcare Dental Products, Inc. (e.g., anticipation or obviousness based on prior art like Black and Baughan concerning the "wave shape" feature) are technically still available for challenge in a new IPR or district court litigation, as they were not adjudicated on the merits. However, the discretionary denial itself may signal a higher bar for institution for similar petitions against this patent, especially if the denial was based on factors like parallel litigation (Fintiv) or the timing of the petition (settled expectations).

There are no apparent pattern signals such as multiple IPRs filed by the same petitioner or aggressive PTAB appeals by the patent owner, given only one IPR has concluded with a denial of institution. Unified Patents is listed as a source for PTAB data related to this case, indicating their monitoring of the patent landscape.

Recommended next steps

For a defendant facing assertion of US11589969, it is important to understand the specific basis for the discretionary denial in IPR2025-01020. While the full reasoning for the discretionary denial is not explicitly detailed in the provided snippets, it likely pertains to factors such as parallel district court litigation (as Solmetex has asserted the '969 patent against Ascentcare in a related matter in the Western District of Michigan) or the USPTO's "settled expectations" policy.

Defendants should carefully review the public records of IPR2025-01020 available on the USPTO PTAB E2E system to understand the precise grounds raised by Ascentcare Dental Products, Inc. and the specific reasoning for the discretionary denial. This will inform whether a new IPR challenge on different grounds, or even the same grounds if new prior art or legal arguments can be presented, might be more successful. The fact that the patent owner prevailed at institution means any new IPR would need to overcome the initial discretionary hurdles set by the PTAB, which have become more stringent recently.

Inventors

Thien Nguyen, Tam Thanh Pham. The patent document does not explicitly state their employer at the time of filing. The first recorded assignment shows their interest being assigned to Incept, Inc.. There is no information to suggest the inventors departed the original assignee within 12 months of filing.

Original assignee

The application for US11589969 was filed by Solmetex LLC. However, the inventors, Thien Nguyen and Tam Thanh Pham, initially assigned their interest to Incept, Inc.. Incept, Inc. later underwent a corporate conversion to Dryshield, LLC. Ultimately, Dryshield, LLC assigned the patent to Solmetex, LLC. Both Solmetex LLC and Dryshield, LLC are operating companies that manufacture and sell dental products embodying the claims, specifically intraoral suction and isolation devices. Solmetex LLC is a recognized leader in amalgam waste management and is currently operating.

Assignment timeline

• 2014-01-06 (executed) / recorded 2014-03-27 — Reel 032545/0891

  • Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST
  • Assignor: PHAM, THAM THANH; NGUYEN, THIEN
  • Assignee: INCEPT, INC.
  • Correspondent: KNOBBE, MARTENS, OLSON & BEAR, LLP, 2040 MAIN STREET, 14TH FLOOR, IRVINE, CA 92614. This correspondent recurs in this chain.
  • Context: Initial assignment from inventors to corporate entity.

• 2017-01-27 (executed) / recorded 2017-06-20 — Reel 042916/0954

  • Conveyance: CONVERSION
  • Assignor: INCEPT INCORPORATED
  • Assignee: DRYSHIELD, LLC
  • Correspondent: KNOBBE, MARTENS, OLSON & BEAR, LLP, 2040 MAIN STREET, 14TH FLOOR, IRVINE, CA 92614. This correspondent recurs in this chain.
  • Context: Corporate restructuring / change of entity name.

• 2022-06-03 (executed) / recorded 2022-06-03 — Reel 060099/0397

  • Conveyance: SECURITY INTEREST
  • Assignor: DRYSHIELD, LLC
  • Assignee: MIDCAP FINANCIAL TRUST
  • Correspondent: POLSINELLI PC, 900 WEST 48TH PLACE, SUITE 900, KANSAS CITY, MO 64112. This correspondent recurs in this chain.
  • Context: Securitization (loan collateral).

• 2022-05-09 (executed) / recorded 2022-06-06 — Reel 060107/0030

  • Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST
  • Assignor: DRYSHIELD, LLC
  • Assignee: SOLMETEX, LLC
  • Correspondent: KNOBBE, MARTENS, OLSON & BEAR, LLP, 2040 MAIN STREET, 14TH FLOOR, IRVINE, CA 92614. This correspondent recurs in this chain.
  • Context: Acquisition/transfer between related operating companies.

• 2022-06-03 (executed) / recorded 2022-11-02 — Reel 061637/0932

  • Conveyance: SECURITY INTEREST
  • Assignor: DRYSHIELD, LLC
  • Assignee: MIDCAP FINANCIAL TRUST
  • Correspondent: POLSINELLI PC, 900 WEST 48TH PLACE, SUITE 900, KANSAS CITY, MO 64112. This correspondent recurs in this chain.
  • Context: Securitization (loan collateral).

• 2025-03-18 (executed) / recorded 2025-03-18 — Reel 070544/0954

  • Conveyance: SECURITY INTEREST
  • Assignor: SOLMETEX, LLC; STERISIL, INC.; DRYSHIELD, LLC; AND OTHERS
  • Assignee: CHURCHILL AGENCY SERVICES LLC, AS ADMINISTRATIVE AGENT
  • Correspondent: MCDERMOTT WILL & EMERY LLP, 1800 ASHBY ROAD, SUITE 210, ST. LOUIS, MO 63132.
  • Context: Securitization (loan collateral).

Timeline diagram

timeline
    title Ownership of US 11589969
    2014 : Filed; Inventors assigned to Incept
    2017 : Incept converted to Dryshield
    2022 : Dryshield gave security interest to Midcap
         : Dryshield assigned to Solmetex
         : Dryshield gave 2nd security interest to Midcap
    2023 : Patent Issued
    2025 : Solmetex gave security interest to Churchill

NPE / troll-pattern signals

1. Shell-entity transfer — not present. The assignees Incept, Inc., Dryshield, LLC, and Solmetex, LLC are all operating companies that ship products embodying the claims. Midcap Financial Trust and Churchill Agency Services LLC are financial entities involved in securitization, not shell IP licensing entities.
2. Known asserter in the chain — not present. None of the assignees (Incept, Dryshield, Solmetex, Midcap Financial Trust, Churchill Agency Services LLC) are identified as known NPEs or patent asserters on public lists.
3. Repeat correspondent across the chain — present. KNOBBE, MARTENS, OLSON & BEAR, LLP served as the correspondent for multiple assignments in the chain (Reel 032545/0891, Reel 042916/0954, Reel 060107/0030). POLSINELLI PC also served as correspondent for two security interest recordings (Reel 060099/0397 and Reel 061637/0932). This indicates consistent legal representation for the operating companies and their financing activities.
4. Cascading transfers — not present. The transfers involve a corporate conversion and an acquisition between operating entities over several years, not rapid, consecutive transfers through chained LLCs.
5. Pre-litigation transfer — not present. The last operating company transfer (Dryshield to Solmetex) was executed on 2022-05-09 (Reel 060107/0030). The earliest identified litigation for this patent is a US District Court case filed in the Michigan Western District Court (case/1:24-cv-00954) and an IPR filed in July 2025. These dates are more than six months after the operating company transfer.
6. Bankruptcy fire-sale — not present. There is no indication of any assignee in the chain having undergone bankruptcy proceedings and selling patent assets.
7. Privateering — not present. There is no evidence of an operating company transferring the patent to an NPE to assert on its behalf.
8. Defensive aggregator (anti-NPE) — not present. The chain does not terminate at a known defensive aggregator.

Verdict

Operating-company assertion
The assignment chain demonstrates that US11589969 has consistently been owned by operating companies (Incept, Inc., Dryshield, LLC, Solmetex, LLC) that manufacture and sell products embodying the claims. The transfers recorded reflect typical corporate activities such as restructuring, acquisition, and securing financing, rather than a transfer to a non-practicing entity. Solmetex, LLC, the current assignee, is an operating company actively involved in the dental industry.
USPTO Assignment Center search: https://assignmentcenter.uspto.gov/patent/US11589969

USPTO Database Search for US Patent 11589969

As per the instruction, the authoritative full patent text for US11589969, titled "Intraoral device with mesh," has been provided. This patent was issued on February 28, 2023, from an application filed on March 27, 2014, and is currently active. The details, including the title, assignee (Solmetex LLC), inventors (Thien Nguyen, Tam Thanh Pham), filing and issue dates, and abstract, are directly sourced from this provided patent document (Google Patents entry for US11589969B2). No further live search of the USPTO database is necessary to establish the basic details of this patent.

Most Relevant Prior Art for US Patent 11589969

The most relevant prior art references are typically those cited by the patent examiner during prosecution, often marked with an asterisk (*). From the "Patent Citations" section of US11589969, the following examiner-cited patents have been identified for analysis:

1. US1471207A
2. US2019612A
3. US4083115A
4. WO2011014952A1
5. US20120237894A1

A detailed analysis of each of these references, including their full citation, publication/filing date, brief description, and potential anticipation of claims in US11589969 under 35 U.S.C. § 102, will be provided in subsequent sections. The analysis will focus on how the features of these prior art documents compare to the elements recited in independent claims 1, 16, and 19 of US11589969.

Explanation of Anticipation (35 U.S.C. § 102):
Under 35 U.S.C. § 102, a claim is anticipated if every element of the claimed invention is found, either explicitly or inherently, in a single prior art reference. The date of the prior art reference is critical; it must predate the effective filing date of the patent being examined (December 7, 2012, for US11589969, based on its priority claim to U.S. provisional patent application No. 61/734,939).

Obviousness Analysis of US Patent 11589969 under 35 U.S.C. § 103

This analysis identifies combinations of prior art references that would render the independent claims (1, 16, 19) of US Patent 11589969 obvious to a person having ordinary skill in the art (PHOSITA) at the time of the invention (priority date: December 7, 2012). The motivation for combining these references stems from common design goals in dental devices, such as improving suction efficiency, isolation, stability, patient comfort, and reusability.

The US Patent 11589969 is a continuation of US application Ser. No. 14/100,323, which claims priority to US provisional application No. 61/734,939 filed on December 7, 2012. Several related patent applications (US20140212838A1, US20140212839A1, US20140212840A1, US20140212841A1) also claim priority from the same underlying provisional application and are considered part of the same patent family. Their disclosures, therefore, are available as prior art against the claims of US11589969 for obviousness purposes.

Person Having Ordinary Skill in the Art (PHOSITA): A PHOSITA in this field would likely be a dental professional (dentist, hygienist) or a biomedical engineer with experience in designing and manufacturing dental instruments and intraoral devices. They would understand the functional requirements for oral suction, isolation, and patient comfort, as well as common materials and manufacturing techniques for medical devices.

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I. Combination for Core Features of Claims 1, 16, and 19 (Main Body, Pocket, Perforations, Suction Connector, Cheek Retractor, Bridge Structure)

This combination addresses the fundamental elements of the dental mouthpiece, including the main body's pocket structure, suction mechanism, cheek retraction, and the internal bridge for maintaining wall separation.

• Primary Reference: WO2011014952A1 (University of Manitoba, published February 10, 2011)

  • Disclosure: WO'952 describes a "dental apparatus" including a "mouthpiece configured to fit within an oral cavity of a patient." The mouthpiece comprises an "anterior body and a posterior body joined at an apex," defining an "evacuation channel therebetween." Both the anterior and/or posterior bodies include "apertures extending therethrough and communicating with the evacuation channel" for fluid suction. The apparatus also includes a "bite block" and a "suction tube in fluid communication with the mouthpiece." [cite: The "Dental apparatus" patent, WO2011014952A1, 2011]
  • Application to Claims: This reference clearly teaches a main body configured as a pocket (evacuation channel) defined by two walls (anterior and posterior bodies) with perforations (apertures) in communication with an interior open space for suction. It also discloses a suction connector (suction tube) and a bite block.

• Secondary Reference 1: US8911232B2 (Nguyen et al., issued December 16, 2014, priority December 7, 2012)

  • Disclosure: US'232, titled "Intraoral dental suction and isolation system," explicitly describes an intraoral device with a "main body" that includes a "lumen for receiving fluid via a plurality of openings," a "cheek retractor portion" coupled to the main body and configured to retract a patient's cheek, and a "suction connector" coupled to the main body to extract fluid. It further states that the "main body, the cheek retractor portion, the suction connector, and the bite block are integrally formed as a single piece of flexible and resilient material." [cite: The "Intraoral dental suction and isolation system" patent, US8911232B2, 2014]
  • Application to Claims: This reference clearly teaches the integration of a distinct cheek retractor portion with the main body and suction connector, and the manufacture from a single piece of flexible material.

• Secondary Reference 2: US20140212838A1 (Incept, Inc., published July 31, 2014, priority December 7, 2012)

  • Disclosure: US'838A1, titled "Intraoral device with bridge," discloses that the "main body may further include an internal bridge structure on an interior surface to ensure that the anterior and posterior surfaces remain separated during suction." The full description of the present patent (US11589969B2) elaborates that this bridge structure is a wave-shaped protrusion integral with the posterior wall, not attached to the anterior wall, with crests providing contact points and troughs allowing fluid passage. This explicit teaching in a co-pending application from the same priority date is available as prior art against the claims of US11589969.
  • Application to Claims: This reference directly addresses the bridge structure for maintaining wall separation during suction, a key element of the independent claims.

• Motivation to Combine:

  1. A PHOSITA would begin with the foundational mouthpiece design of WO2011014952A1, which provides an effective evacuation channel with apertures for suction.
  2. However, WO'952 does not explicitly detail a dedicated cheek retractor. A PHOSITA would recognize the benefits of improved oral isolation and hands-free operation in dental procedures. US8911232B2 clearly teaches the incorporation of a distinct "cheek retractor portion" and the advantages of a one-piece, flexible construction. It would be obvious for a PHOSITA to combine these features into the WO'952 device to enhance its isolation capabilities and simplify manufacturing. Both references operate in the same field and address similar problems in dental care.
  3. Once the flexible mouthpiece with an evacuation channel is established (from WO'952, augmented by US'232's cheek retractor), a PHOSITA would anticipate the common problem of flexible walls collapsing under suction, thereby impeding fluid flow. US20140212838A1 specifically presents the solution: an "internal bridge structure... to ensure that the anterior and posterior surfaces remain separated during suction." A PHOSITA would be strongly motivated to incorporate this known and effective solution into the combined device to maintain consistent and efficient suction, especially since US'838A1 is a related application from the same inventors and priority date, addressing an improvement to a very similar intraoral system. The wave-shaped design, providing both support and open channels for fluid, represents a predictable engineering choice for this function.

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II. Obviousness of Additional Features (Dependent Claims and Specific Elements)

Building upon the core combination above, the following features, also detailed in co-pending applications with the same priority date or representing conventional design choices, would be obvious to a PHOSITA:

• Perforations as a "mesh" (Claims 2, 4, 18):

  • Given that WO'952 and US'232 teach "apertures" or "plurality of openings" for suction, arranging these perforations in a "mesh" is an obvious design choice. A PHOSITA would understand that a mesh configuration optimizes fluid evacuation while preventing larger debris from entering the suction channel. This is a common and predictable engineering arrangement for filtration and suction surfaces in various fields, including dentistry.

• Opening/Slit along a longitudinal axis on the first (anterior) wall (Claim 5):

  • Reference: US20140212840A1 (Incept, Inc., published July 31, 2014, priority December 7, 2012)
  • Disclosure: US'840A1 explicitly teaches an "intraoral device with slit," noting that "The main body portion may further include a slit along a longitudinal, central axis on the anterior wall." [cite: The "Intraoral device with slit" patent, US20140212840A1, 2014]
  • Motivation: The description of US11589969B2 notes that such a slit "may assist in capture and suction of water, saliva and debris, as well as assisting in cleaning and maintenance." These are desirable enhancements for an intraoral suction device. A PHOSITA would be motivated to incorporate such a feature from US'840A1 into the combined mouthpiece to improve debris capture and ease of cleaning, especially given its disclosure within the same patent family addressing similar device improvements.

• Stability Bar (Claim 10):

  • Reference: US20140212839A1 (Incept, Inc., published July 31, 2014, priority December 7, 2012)
  • Disclosure: US'839A1, titled "Intraoral device with stability bar," teaches "an internal reinforcing or stability bar on an interior surface to ensure the main body retains its shape during suction and/or when a mouth prop is placed in a patient's mouth." [cite: The "Intraoral device with stability bar" patent, US20140212839A1, 2014]
  • Motivation: For a flexible mouthpiece designed to conform to the mouth, maintaining structural integrity and preventing unwanted deformation during use (particularly under strong suction or when a mouth prop is applied) is a known challenge. The stability bar provides this reinforcement, making it an obvious and desirable addition for a PHOSITA seeking to improve the robustness and reliability of the intraoral device.

• Flexible, translucent, high heat-resistant, autoclavable silicone-based material (Claim 12):

  • Reference: US8911232B2 (Nguyen et al., 2014) explicitly mentions "flexible and resilient material." [cite: The "Intraoral dental suction and isolation system" patent, US8911232B2, 2014]
  • Motivation: Silicone is a widely recognized, commonly used, flexible, translucent, autoclavable, and high heat-resistant material in medical and dental devices. The choice of silicone for reusability, patient comfort, and effective sterilization (autoclavability) would be an obvious material selection for a PHOSITA designing a modern dental mouthpiece.

• Detachable Mouth Prop (Claims 14, 15):

  • Reference 1: US4167814A (Schubert, 1979) - Mouth prop and oral evacuation device. [cite: US4167814A, 1979]
  • Reference 2: US20140212841A1 (Incept, Inc., published July 31, 2014, priority December 7, 2012)
  • Disclosure: US'841A1, titled "Intraoral device with detachable mouth prop," states that "the mouthpiece may be used with a mouth prop that may be attached to the suction connector portion" and describes an "external plug" on the suction connector portion that "may correspond to and serve to connect with an opening in the mouth prop." It further specifies that the mouth prop "may be made of thickened silicone material injection molded in a single piece." [cite: The "Intraoral device with detachable mouth prop" patent, US20140212841A1, 2014]
  • Motivation: The general concept of combining a mouth prop with an oral evacuation device is taught by Schubert. A PHOSITA would be motivated to integrate a mouth prop into the combined mouthpiece for enhanced hands-free operation and patient comfort. The detachability, as articulated in the present patent's description, allows for "different sizes of each may be mixed and matched as needed for a particular patient's mouth," offering valuable customization and flexibility. The specific plug/opening connection and one-piece injection molding for the mouth prop are predictable design choices for creating a robust, sterilizable, and user-friendly detachable component, as explicitly taught in US'841A1, which targets improvements for the same type of intraoral device.

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In summary, the key elements of US11589969, including the perforated pocket main body, cheek retractor, suction connector, internal bridge structure, slit, stability bar, and detachable mouth prop, would have been obvious to a PHOSITA by combining the teachings of WO2011014952A1 and US8911232B2 with the further refinements disclosed in the co-pending family applications US20140212838A1, US20140212839A1, US20140212840A1, and US20140212841A1, all sharing the same priority date and addressing common problems and desired improvements in intraoral dental devices.

US Patent 11589969 (Application Number US14/228,046) presents the following details regarding its term and family:

Patent Term Adjustments (PTA) / Patent Term Extensions (PTE):
The specific values for Patent Term Adjustment (PTA) or Patent Term Extension (PTE) are not explicitly detailed within the provided patent text or the Google Patents information. However, the "Anticipated expiration" date provided on Google Patents already reflects any such adjustments or extensions.

Projected Expiration Date:
The anticipated expiration date for US Patent 11589969 is 2033-12-09.

This date is derived from the earliest priority date of 2012-12-07 (from U.S. provisional patent application No. 61/734,939) plus the standard 20-year patent term, with additional time likely granted for Patent Term Adjustment.

Continuation Applications:
US Patent 11589969 (application number US14/228,046) is a continuation and claims the priority benefit of U.S. patent application Ser. No. 14/100,323, filed December 9, 2013. This parent application is also identified as US8911232B2.

Divisional Applications:
The provided data does not explicitly list any direct divisional applications stemming from US Patent 11589969.

Related Family Members:
US Patent 11589969 belongs to a patent family (ID=50881306) that shares common priority and filing dates (March 27, 2014, for the applications, and December 7, 2012, for the earliest priority). These related applications, which may include continuations or divisionals of an earlier parent application (US14/100,323), are:

• US14/228,050 (US9788924B2) - Title: "Intraoral device with bridge"
• US14/228,057 (US11744686B2) - Title: "Intraoral device"
• US14/228,054 (US11576764B2) - Title: "Intraoral device with stability bar"
• US14/228,061 (US11589970B2) - Title: "Intraoral device with detachable mouth prop"

Here is a comprehensive "Defensive Disclosure" document for US Patent 11589969, analyzing derivative variations based on the specified axes. These derivatives are applicable across the independent claims (Claims 1, 16, and 19) due to their shared core inventive concepts regarding an intraoral mouthpiece with a main body, perforations, a bridge structure, a cheek retractor, and a suction connector.

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Defensive Disclosure for US Patent 11589969: Intraoral Device with Mesh

Date: 2026-05-15

This defensive disclosure outlines several derivative variations of the intraoral device described in US Patent 11589969, aiming to broaden the scope of existing prior art and render potential future incremental improvements by competitors as obvious or non-novel.

Derivative Variations

1. Material & Component Substitution

Derivative 1.1: Biodegradable Polymer with Integrated Microfluidic Channels

• Enabling Description: A dental mouthpiece derived from the core concepts of US11589969, where the flexible, translucent, high heat-resistant, autoclavable silicone-based material is substituted with a biocompatible, biodegradable poly(lactic-co-glycolic acid) (PLGA) or polycaprolactone (PCL) polymer. This allows for single-use, disposable applications, eliminating sterilization needs. The perforations and mesh (140) on the anterior, posterior, and side walls, as well as the transition portion, are formed via direct laser micromachining during the injection molding process to achieve precise pore sizes (e.g., 50-200 µm). The wave-shaped bridge structure (180) on the posterior wall is augmented with embedded microfluidic channels (e.g., 500 µm diameter) that run through the crests and troughs. These channels are designed to deliver targeted antimicrobial agents (e.g., chlorhexidine gluconate) or local anesthetics to specific intraoral regions, driven by a peristaltic micro-pump integrated within the suction connector portion (120). The pump's flow rate can be externally controlled via a luer lock connector on the suction connector portion. The cheek retractor portion (130) maintains its resilient function, formed from the same biodegradable polymer but with engineered flexural moduli achieved through varying wall thicknesses and internal ribbing patterns.

  graph TD
      A[Mouthpiece Main Body (PLGA/PCL)] -- Flexible Connection --> B(Cheek Retractor)
      A -- Perforations/Mesh (Laser Micromachined) --> C{Interior Open Space}
      C -- Suction Flow --> D[Suction Connector Portion]
      D -- Connects To --> E(Vacuum Source)
      A -- Contains --> F[Posterior Wall]
      F -- Protrudes From Interior Surface --> G{Bridge Structure (Wave-shaped)}
      G -- Not Attached To --> H[Anterior Wall]
      G -- Embedded Within --> I(Microfluidic Channels)
      I -- Deliver --> J(Antimicrobial/Anesthetic Agents)
      D -- Integrates --> K(Peristaltic Micro-pump)
      K -- Controls Flow To --> I
      L(Luer Lock Connector) -- Controls --> K
  

Derivative 1.2: Multi-Durometer Co-Molded Mouthpiece with Integrated Fibre Optics

• Enabling Description: A dental mouthpiece derived from the core concepts of US11589969, manufactured using a multi-durometer co-molding process combining two or more silicone compounds of varying Shore hardness. The cheek retractor portion (130) and the exterior edges of the main body (110) are molded with a softer, more pliable silicone (e.g., Shore A 20) for enhanced patient comfort and tissue conformity. The stability bar (150, if present) and the bridge structure (180) are co-molded with a harder, more rigid silicone (e.g., Shore A 50) to provide structural integrity and maintain separation between walls under suction. The suction connector portion (120) may also use a harder durometer for secure adapter connection. Furthermore, the anterior wall of the main body and the cheek retractor portion are co-molded to include integrated optical fibers (e.g., polymer optical fibers, POF) that run longitudinally along their exterior surfaces. These fibers are connected to a high-intensity LED light source via the suction connector portion, providing intraoral illumination for improved visibility during dental procedures. The light is diffused through the translucent softer silicone portions, eliminating glare. The perforations (140) are precisely formed through both soft and hard silicone regions.

  flowchart TD
      A[Mouthpiece Assembly] -- Co-Molding --> B(Soft Silicone - Shore A 20)
      A -- Co-Molding --> C(Hard Silicone - Shore A 50)
  
      B --> D[Cheek Retractor Portion (Comfort)]
      B --> E[Exterior Edges Main Body (Conformity)]
  
      C --> F[Bridge Structure (Structural Integrity)]
      C --> G[Stability Bar (Structural Integrity)]
      C --> H[Suction Connector Portion (Secure Fit)]
  
      D -- Integrates --> I(Polymer Optical Fibers)
      E -- Integrates --> I
      I -- Connects To --> J(High-Intensity LED Source)
      J -- Via --> H
      K[Perforations] -- Through --> B
      K -- Through --> C
  

2. Operational Parameter Expansion

Derivative 2.1: High-Throughput Saliva Ejection and Aerosol Capture System

• Enabling Description: A dental mouthpiece system derived from the core concepts of US11589969, scaled for industrial or high-volume clinical settings where rapid and continuous evacuation of high-viscosity fluids and aerosols is critical, such as during extensive oral surgeries or procedures involving high-speed drills. The main body portion (110) features an enlarged internal pocket volume (e.g., 200 cm³) and wider perforations (e.g., 1-2 mm diameter) on all walls, designed to handle flow rates up to 50 L/min (compared to typical dental suction of 10-15 L/min). The bridge structure (180) is reinforced with a titanium alloy skeleton overmolded with autoclavable perfluoroalkoxy (PFA), maintaining anterior-posterior wall separation under extreme suction pressures (e.g., 0.8-1.0 bar vacuum). The troughs of the bridge structure are designed with optimized fluid dynamics for laminar flow, reducing turbulence and cavitation during high-speed aspiration. The suction connector portion (120) is enlarged (e.g., 20 mm internal diameter) and incorporates a quick-connect fitting compatible with industrial-grade high-volume evacuators. The entire device is fabricated from ultra-high molecular weight polyethylene (UHMWPE) for superior abrasion resistance and chemical inertness, making it suitable for rigorous chemical sterilization cycles at elevated temperatures (e.g., 135°C for 30 minutes) and pressures, in addition to autoclaving. Integrated pressure sensors within the suction connector provide real-time feedback on vacuum levels.

  graph TD
      A[Main Body (UHMWPE)] -- Enlarged Volume --> B{Interior Open Space}
      B -- High Flow Perforations --> A
      B -- High Pressure Suction --> C[Suction Connector (20mm ID)]
      C -- Quick-Connect --> D(Industrial HVE System)
      A -- Contains --> E[Posterior Wall]
      E -- Reinforced --> F(Titanium Alloy Skeleton)
      F -- Overmolded With --> G(PFA)
      G -- Forms --> H{Bridge Structure (Optimized Troughs)}
      H -- Maintains Separation Under --> I(High Vacuum Pressure)
      C -- Integrates --> J(Pressure Sensors)
      K(Cheek Retractor) -- High Resiliance --> A
  

Derivative 2.2: Micro-Mouthpiece for Neonatal or Micromanipulation Dentistry

• Enabling Description: A highly miniaturized dental mouthpiece derived from the core concepts of US11589969, scaled for neonatal or very small animal dentistry, or for highly localized fluid control during micromanipulation procedures. The entire device measures less than 2 cm in length. It is fabricated using additive manufacturing (e.g., stereolithography or micro-injection molding) from a biocompatible, medical-grade photopolymer resin or micro-silicone. The perforations (140) are laser-drilled micro-apertures (e.g., 50 µm diameter) to handle minute fluid volumes and cellular debris, creating a nanofiltration mesh. The interior open space is commensurately small (e.g., <0.5 cm³). The wave-shaped bridge structure (180) is precisely micro-fabricated to maintain a separation of less than 0.5 mm between the anterior and posterior walls, crucial for micro-suction efficiency. The suction connector portion (120) is a micro-bore capillary tube (e.g., 1 mm internal diameter) connected to a syringe pump or micro-peristaltic pump for precise, low-volume aspiration (e.g., <1 mL/min). The cheek retractor portion (130) is designed as a delicate, thin-walled leaf spring structure to provide gentle retraction for fragile tissues. The device operates at very low pressures (e.g., 0.05 bar vacuum) to prevent tissue damage.

  classDiagram
      class MicroMouthpiece {
          + Length: < 2cm
          + Material: Photopolymer/Micro-silicone
          + Fabrication: Additive Mfg.
          + MainBodyPocket
          + MicroPerforations: 50µm dia.
          + InteriorOpenSpace: <0.5 cm^3
          + BridgeStructure: Micro-fabricated Wave
          + WallSeparation: <0.5mm
          + MicroBoreSuctionConnector: 1mm ID
          + SuctionMechanism: Syringe Pump/Micro-peristaltic
          + CheekRetractor: Thin-walled Leaf Spring
          + OperatingPressure: 0.05 bar vacuum
      }
      MicroMouthpiece --> MainBodyPocket
      MainBodyPocket --> MicroPerforations
      MainBodyPocket --> InteriorOpenSpace
      MainBodyPocket --> BridgeStructure
      MicroMouthpiece --> MicroBoreSuctionConnector
      MicroMouthpiece --> CheekRetractor
  

3. Cross-Domain Application

Derivative 3.1: Veterinary Oral Hygiene System

• Enabling Description: A modified intraoral device derived from the core concepts of US11589969, specifically adapted for veterinary dental procedures on companion animals (e.g., dogs, cats). The mouthpiece's overall geometry and sizing are designed to accommodate the diverse oral anatomies of various animal breeds and species, requiring multiple interchangeable main body and cheek retractor portion sizes. The material is a veterinary-grade, bite-resistant, flexible silicone-urethane co-polymer that can withstand significant chewing forces and repeated autoclaving. The perforations (140) and mesh are slightly larger (e.g., 1-3 mm diameter) to better manage thicker saliva and potential food debris common in animal mouths. The bridge structure (180) is robustly designed to resist collapse even when subjected to inadvertent biting or tongue pressure during sedation. The cheek retractor portion (130) is significantly reinforced and elongated to provide robust retraction of animal cheeks and lips, which often have different anatomical structures and greater muscle tone than humans. The suction connector portion (120) includes a veterinary standard quick-disconnect fitting and may integrate a fluid warmer to prevent hypothermia during prolonged procedures. The device is also adaptable for use with intubation tubes, allowing for concurrent anesthesia and oral cavity management.

  flowchart TD
      A[Veterinary Mouthpiece] -- Multiple Sizes --> B(Animal Oral Anatomy)
      A -- Material: Silicone-Urethane Co-polymer --> C(Bite-Resistant)
      A -- Main Body Pocket --> D{Interior Space}
      D -- Large Perforations --> A
      D -- Suction Connector (Vet Std Fitting) --> E(Veterinary Vacuum Source)
      E -- Optional --> F(Fluid Warmer)
      A -- Bridge Structure --> G(Robust, Biting-Resistant)
      A -- Cheek Retractor --> H(Reinforced, Elongated)
      A -- Compatible With --> I(Intubation Tube)
  

Derivative 3.2: Industrial Component Cleaning System

• Enabling Description: An intraoral device adapted from the core concepts of US11589969 for precision cleaning of small industrial components (e.g., electronic circuit boards, small mechanical parts, jewelry) using high-pressure air and solvent flushing. The "main body portion" (110) functions as a cleaning chamber, shaped to cradle the component. The "perforations" (140) are strategically placed micro-nozzles (e.g., 100-500 µm diameter) configured to deliver high-pressure cleaning fluids (e.g., deionized water, isopropyl alcohol, specialized solvents) or compressed air jets from multiple angles. The "interior open space" becomes the cleaning volume. The "second wall" with the "bridge structure" (180) now serves as a component-stabilizing cradle, with the wave-shaped protrusions precisely matching the topography of the component to be cleaned, holding it securely without damaging delicate surfaces. The "troughs" allow for unobstructed flow of cleaning fluids and debris. The "suction connector portion" (120) is re-engineered as a high-volume liquid/gas waste recovery port, connected to a closed-loop filtration and recirculation system. The "cheek retractor portion" (130) is re-purposed as a gripping mechanism or mounting bracket to integrate the cleaning chamber into automated assembly lines or robotic systems. The material is chemical-resistant PEEK or PTFE, suitable for aggressive solvents and high temperatures.

  graph LR
      A[Industrial Cleaning Chamber (PEEK/PTFE)] -- Holds Securely --> B(Small Industrial Component)
      A -- Micro-Nozzles (Perforations) --> C{High-Pressure Fluid/Air Jets}
      C -- Cleans Surface --> B
      A -- Component-Stabilizing Cradle --> D{Bridge Structure (Custom Wave-Shape)}
      D -- Facilitates Flow --> C
      A -- Waste Recovery Port (Suction Connector) --> E(Closed-Loop Filtration/Recirculation)
      A -- Gripping Mechanism/Mount (Cheek Retractor) --> F(Automated Assembly Line/Robot)
  

4. Integration with Emerging Tech

Derivative 4.1: AI-Driven Adaptive Mouthpiece with IoT Sensors

• Enabling Description: A dental mouthpiece system derived from the core concepts of US11589969, enhanced with an array of integrated Internet of Things (IoT) sensors and an AI-driven control unit for real-time adaptation and optimization. The mouthpiece itself is fabricated with embedded micro-electromechanical systems (MEMS) pressure sensors (e.g., piezoresistive sensors) on the interior surfaces of the anterior and posterior walls, including within the crests of the bridge structure (180), to monitor localized pressure distributions and fluid accumulation. Micro-pH sensors and conductivity sensors are integrated within the perforations (140) to analyze saliva chemistry and fluid type. A flexible, stretchable electronics substrate (e.g., polyimide with embedded circuits) connects these sensors to a miniaturized AI-enabled microcontroller in the suction connector portion (120). This AI unit processes real-time sensor data to dynamically adjust suction vacuum strength and pattern via a smart vacuum adapter (e.g., pulsing suction to clear blockages, or increasing localized suction based on fluid pooling detected by pressure sensors). The cheek retractor portion (130) incorporates electroactive polymer (EAP) actuators that, controlled by the AI, can precisely adjust retraction force and position to optimize visibility and patient comfort based on oral cavity dynamics. All data is transmitted wirelessly (e.g., Bluetooth Low Energy) to a dental workstation for AI-driven procedure optimization and record-keeping.

  stateDiagram-v2
      state "Mouthpiece In Situ" as MP_SITU
      state "Sensor Data Acquisition" as SENSOR_ACQ
      state "AI Analysis & Decision" as AI_DECIDE
      state "Actuator Adjustment" as ACT_ADJ
      state "Suction Optimization" as SUCT_OPT
      state "Data Transmission" as DATA_TX
  
      MP_SITU --> SENSOR_ACQ: Real-time operation
      SENSOR_ACQ --> AI_DECIDE: Pressure, pH, Conductivity data
      AI_DECIDE --> ACT_ADJ: EAP Actuator commands (retraction)
      AI_DECIDE --> SUCT_OPT: Smart Vacuum Adapter commands (suction)
      AI_DECIDE --> DATA_TX: Processed data
      ACT_ADJ --> MP_SITU: Adjusts mouthpiece pose
      SUCT_OPT --> MP_SITU: Adjusts suction
      DATA_TX --> Workstation[Dental Workstation]: Wireless (BLE)
  

Derivative 4.2: Blockchain-Enabled Sterile Supply Chain and Usage Tracking

• Enabling Description: A dental mouthpiece system derived from the core concepts of US11589969, incorporating a unique, immutable identifier (UID) embedded via a secure, laser-etched 2D barcode or RFID tag during manufacturing. This UID is linked to a blockchain network for comprehensive supply chain verification and usage tracking. Each mouthpiece, being reusable (autoclavable silicone), has its manufacturing date, material provenance, quality control data, sterilization cycles, and patient usage logged onto the blockchain. An IoT-enabled sterilization unit reads the UID post-sterilization and automatically records the sterilization parameters (temperature, pressure, duration) and date/time onto the blockchain. During patient use, the smart vacuum adapter (connected to the suction connector portion 120) reads the mouthpiece's UID and records the procedure start/end times and duration, associated with a patient ID (pseudonymized for privacy), onto the blockchain. This ensures tamper-proof verification of sterility, tracks the total lifespan and usage cycles of each mouthpiece, and provides an auditable record for regulatory compliance and infection control. The blockchain can also store calibration data for the integrated sensors (as in Derivative 4.1), ensuring data integrity.

  sequenceDiagram
      participant M as Mouthpiece (UID)
      participant MF as Manufacturer
      participant QC as Quality Control
      participant DIST as Distributor
      participant HOSP as Hospital/Clinic
      participant STER as Sterilization Unit (IoT)
      participant SVA as Smart Vacuum Adapter
      participant BC as Blockchain Network
  
      MF -> M: Embed UID (2D Barcode/RFID)
      MF -> BC: Log Production Data (Batch, Materials)
      QC -> BC: Log QC Results
      DIST -> BC: Log Shipment/Receipt
      HOSP -> BC: Log Inventory Receipt
      loop Usage Cycle
          STER -> M: Sterilize Mouthpiece
          STER -> BC: Log Sterilization Event (UID, Params, Date)
          SVA -> M: Read UID
          SVA -> BC: Log Usage Event (UID, Patient ID, Start/End Time)
          M -> SVA: Suction / Fluid Transfer
      end
      BC -> HOSP: Provide Audit Trail
  

5. The "Inverse" or Failure Mode

Derivative 5.1: Passive Overflow Protection Mouthpiece

• Enabling Description: A dental mouthpiece system derived from the core concepts of US11589969, engineered with a passive "inverse" failure mode focused on safe fluid overflow management in the event of suction failure or blockage. The main body portion (110) features an enlarged interior open space (e.g., 20% larger volume than standard) and the perforations (140) are designed with a dual-stage filtration system. The primary stage is a fine mesh for debris, and the secondary stage is a larger, hydrophobic membrane that allows air through but restricts fluid, creating a temporary fluid reservoir within the pocket if suction fails. The wave-shaped bridge structure (180) on the posterior wall is redesigned such that its crests feature pressure-actuated micro-valves. In normal operation, these micro-valves are closed. However, if the internal pressure in the pocket exceeds a threshold (e.g., due to fluid accumulation from suction failure), the micro-valves passively open, creating secondary overflow channels directly to the posterior of the device, directing fluid towards the throat and minimizing aspiration risk by preventing blockage of the oral cavity and providing alternative drainage. The material remains flexible silicone but with optimized Shore hardness for the valve components. The suction connector portion (120) includes a built-in one-way check valve to prevent backflow into the patient's mouth from the suction line.

  graph TD
      A[Main Body (Enlarged Pocket)] -- Contains --> B{Interior Open Space}
      B -- Primary Drainage --> C[Perforations (Dual-Stage Filter)]
      C -- To --> D[Suction Connector]
      D -- Includes --> E(One-Way Check Valve)
      B -- Contains --> F[Posterior Wall]
      F -- Protrudes --> G{Bridge Structure (Wave-shaped)}
      G -- Crests Integrate --> H(Pressure-Actuated Micro-Valves)
      B -- If Suction Fails & Pressure Exceeds Threshold --> H
      H -- Opens To --> I(Secondary Overflow Channels)
      I -- Directs Fluid Towards --> J(Posterior/Throat)
      subgraph Failure Mode
          K(Suction Failure/Blockage) --> L(Fluid Accumulation in Pocket)
          L --> H
      end
  

Derivative 5.2: Limited-Functionality, Emergency Dental Isolation Device

• Enabling Description: A simplified and robust version of the dental mouthpiece derived from the core concepts of US11589969, intended for emergency field dentistry or environments with limited resources, focusing on essential isolation and minimal suction capability. This "limited-functionality" mode prioritizes durability and ease of deployment over comprehensive fluid management. The main body portion (110), cheek retractor portion (130), and suction connector portion (120) are molded from a highly resilient, impact-resistant thermoplastic elastomer (TPE), sacrificing translucency for toughness. The perforations (140) are larger and fewer, designed for passive drainage rather than active suction, functioning primarily as open ports for gravity-assisted fluid expulsion. The interior open space still collects fluids, but the "suction connector portion" (120) is simplified to a basic drain tube (e.g., 8 mm internal diameter) that can connect to a manual aspirator bulb or a basic gravity-drain bag, requiring no external vacuum source. The bridge structure (180) on the posterior wall is simplified to a series of robust, non-collapsible ribs (instead of wave-shapes) that ensure separation of the anterior and posterior walls under potential physical stress, but without the optimized fluid dynamics for high-flow suction. The cheek retractor portion (130) provides maximum static retraction force due to its rigid material and design, even if less comfortable than a flexible variant, ensuring airway and field isolation. This device is autoclavable using basic boiling water methods for field sterilization.

  flowchart TD
      A[Emergency Mouthpiece (TPE)] -- Material: Impact-Resistant TPE --> B(Durability)
      A -- Main Body (Pocket) --> C{Interior Space}
      C -- Large, Fewer Perforations --> D(Passive Drainage/Gravity)
      A -- Suction Connector (Basic Drain Tube) --> E(Manual Aspirator/Gravity Bag)
      A -- Bridge Structure (Robust Ribs) --> F(Wall Separation Under Stress)
      A -- Cheek Retractor (Max Static Retraction) --> G(Field Isolation)
      H(Field Sterilization) -- Boiling Water --> A
  

Combination Prior Art Scenarios

These scenarios combine aspects of US Patent 11589969 with existing open-source standards to demonstrate obviousness or lack of novelty in further derivative improvements.

1. Integration with Open-Source CAD/CAM Standards for Customization:

   • Description: The mouthpiece's core design elements (main body pocket, bridge structure, perforations, cheek retractor) could be incorporated into open-source CAD (Computer-Aided Design) software (e.g., FreeCAD, Blender with dental plugins). Dental professionals could utilize intraoral scans, potentially from open-source imaging solutions (e.g., OpenDental Imaging), to custom-design patient-specific mouthpieces. These customized designs, represented by open-source CAM standards (e.g., STL for 3D printing, G-code for CNC milling), could then be fabricated on-site using biocompatible, autoclavable 3D printing resins, optimizing fit, comfort, suction efficiency, and isolation for individual patients. The existing patent description notes that "differently-sized mouthpieces may be provided for differently-sized mouths of adults and children," explicitly opening the door for such customization.
   • Prior Art Synergy: The patent's underlying structural components (main body portion 110, cheek retractor portion 130, bridge structure 180) serve as a foundational template, which, when combined with widely available open-source CAD/CAM tools and biocompatible 3D printing, enables the creation of precisely tailored devices, making further claims on custom sizing or manufacturing methods via digital means evident.

2. Real-time Environmental Monitoring via Open-Source IoT Protocols (e.g., MQTT, Zigbee):

   • Description: Building on the concept of integrated sensors (as in Derivative 4.1), the mouthpiece or its attached smart vacuum adapter could incorporate basic environmental sensors (e.g., for aerosol concentration, temperature, humidity within the oral cavity and ambient environment). Data from these sensors would be transmitted wirelessly using open-source IoT protocols such as MQTT (Message Queuing Telemetry Transport) or Zigbee to a local clinic network. This enables real-time monitoring of infection control efficacy, detection of airborne contaminants, and assessment of microclimates within the oral cavity. The collected data could be visualized using open-source dashboards (e.g., Grafana) and stored in open-source time-series databases (e.g., InfluxDB) for trend analysis, research, and compliance reporting. The patent's reference to the main body being "at least partially enclosed" allows for concentrated environmental sensing within the operative field.
   • Prior Art Synergy: The ability of the device's "main body portion" (110) to create an isolated or partially enclosed space, combined with the suction connector portion (120) for fluid and air removal, inherently provides a confined area suitable for localized environmental sensing. Integrating this with readily available open-source IoT protocols for data collection and analysis represents an obvious advancement for enhanced safety and monitoring.

3. Open-Source Data Standards for Sterilization and Reusability Tracking (e.g., HL7, FHIR):

   • Description: Given that the mouthpiece is designed to be "reusable" and "autoclavable," an advanced system for tracking its lifecycle could be implemented using open-source healthcare data standards like Health Level Seven (HL7) or Fast Healthcare Interoperability Resources (FHIR). Each reusable mouthpiece could feature a unique, immutable identifier (UID) (e.g., laser-etched or RFID-enabled). An IoT-enabled sterilization unit would record each sterilization cycle (date, time, parameters, success/failure) and associate it with the mouthpiece's UID, storing this information in FHIR-compliant resources. Similarly, during patient use, the smart vacuum adapter (connected via the suction connector portion 120) could log usage details (start/end time, patient ID—pseudonymized) into FHIR resources. This ensures seamless interoperability of sterilization records across diverse healthcare IT systems, facilitates robust audit trails for regulatory compliance, optimizes inventory management, and enhances patient safety by verifying device sterility and tracking its total lifespan.
   • Prior Art Synergy: The patent's explicit statements about the mouthpiece being "reusable" and "autoclavable" establish a clear requirement for tracking and verifying its sterile state and usage history. Leveraging established open-source healthcare data standards like HL7 and FHIR for this tracking is an obvious application to ensure data integrity, interoperability, and compliance in modern healthcare environments.