US 11812895

Analysis of U.S. Patent 11,812,895

Title: Grease containment systems

Assignee: Grease Box LLC

Inventors: Amy Beaumont, Markus Dale Hillman

Filing Date: August 4, 2020

Issue Date: November 14, 2023

Abstract:
A safety system relating to outdoor cooking devices, such as wood pellet grills. An enclosure around a grease drain bucket. The enclosure designed to create a thermal buffer around the grease drain bucket and to securely mount to a drain of the outdoor cooking device increasing stability. The enclosure providing both burn safety and spill prevention, while still allowing ventilation of the heat from the grease collected. Adjustable vents in the walls of the enclosure allowing optional dampening of ventilation and suppression of fire potential inside the enclosure. Increasing safety of the outdoor cooking devices through cleanliness, stability and control of oxygen and flow of heat in the fire prevention triangle.

Plain-Language Overview of Independent Claims:

This patent has two independent claims which define the core of the invention. The other claims (dependent claims) are variations of these.

Claim 1: This claim describes a system for catching grease from an outdoor grill. The system includes:

• A container (receptacle) to collect the grease.
• An outer box (enclosure) that surrounds the container.
• The enclosure has two parts: a top half and a bottom half that can be separated.
• Inside the bottom half, there's a support to hold the grease container in place.
• The top half has a mounting bracket designed to attach the whole system directly to the grill's drain pipe.
• A layer of insulation, which can be an air gap, is between the grease container and the outer walls of the enclosure to prevent the outside from getting too hot.
• The entire system is designed to be used outdoors, attached to the grill.

In essence, Claim 1 protects the idea of a two-part, insulated, and ventilated box that securely attaches to a grill's drain to safely hold a grease bucket.

Claim 16: This claim is very similar to Claim 1 but is broader in some respects and more specific in others. It describes a system that includes the outdoor cooking device itself, along with the grease containment system. The key features are:

• The outdoor cooking device (e.g., a grill).
• A grease collection container.
• A two-part enclosure (upper and lower sections) that surrounds the container.
• A support for the container inside the lower section.
• A mounting bracket on the upper section to attach the enclosure to the grill's drain.
• An insulation layer between the container and the enclosure's walls.
• The enclosure has thermal vents to let heat escape.
• Crucially, these vents have dampers that can be adjusted to control the airflow, which helps in preventing flare-ups or fires by limiting oxygen.
• The system is used in an outdoor environment.

This claim focuses on the combination of the grill with a grease containment system that has the added safety feature of adjustable vents for fire suppression.

Litigation Status:

A search of the CAFC (Court of Appeals for the Federal Circuit) dockets for 2026 did not yield any results for US Patent 11,812,895. However, the patent document itself notes that there is litigation related to this patent family in the Washington Western District Court, under case number 2:25-cv-01300. As a patent analyst, it is important to note that district court litigation can often lead to appeals to the CAFC, but at present, no such appeal is apparent in the 2026 docket.

As of April 26, 2026, the patent document US11812895B2 itself indicates that there is litigation related to its patent family. Specifically, a case has been filed in the Washington Western District Court under case number 2:25-cv-01300.

Unified Patents Portal, a known source for patent litigation information, provides a search function for patent litigations in various courts, including District Courts. However, without direct access to the search results for US patent 11812895 on Unified Patents or PACER at this moment, further details such as plaintiff(s), defendant(s), filing date, and outcome or current status cannot be definitively provided beyond what is stated in the patent document itself.

Therefore, the known litigation for US patent 11812895 is:

• Jurisdiction: Washington Western District Court
• Case Number: 2:25-cv-01300
• Plaintiff(s): Not specified in the patent document.
• Defendant(s): Not specified in the patent document.
• Filing Date: Not specified in the patent document.
• Outcome/Current Status: The patent document states the status as "Critical" and "First worldwide family litigation filed", but no outcome is listed.

Proceedings overview

The USPTO ODP API indicates no AIA trial proceedings on file for US Patent 11,812,895. A web search for recent or older proceedings also did not surface any PTAB activity. Therefore, all claims of the patent are currently untested by PTAB proceedings. This means a defendant has a full range of prior art and statutory bases available for an AIA trial.

Strategic summary

As of the current date, US Patent 11,812,895 has not been subject to any AIA trial proceedings before the PTAB. This means all claims (1-16) of the patent are currently sustained and untested by any IPR, PGR, or CBM challenges. Consequently, there is no estoppel landscape established by previous PTAB decisions, leaving all potential prior-art grounds and statutory bases (§ 102, § 103, § 112) available for a potential petitioner. The absence of PTAB activity could suggest various things, such as the patent being relatively new, not yet widely asserted, or that prior art challenges have not been identified or pursued.

Recommended next steps

Since no PTAB activity exists for US Patent 11,812,895, the absence of such proceedings means there are no trial-stage milestones or deadlines to note. If facing an assertion of this patent, a defendant would have the full breadth of PTAB trial options available, including Inter Partes Review, to challenge the patentability of the claims based on prior art.

Inventors

• Amy Beaumont: Employer at time of filing not determinable from the patent document.
• Markus Dale Hillman: Employer at time of filing not determinable from the patent document.

No unusual patterns, such as all inventors departing the original assignee within 12 months of filing, are immediately apparent from the provided information.

Original assignee

The original assignee named on the issued patent is Grease Box LLC. The patent abstract and description indicate that Grease Box LLC developed "grease containment systems" for "outdoor cooking devices, such as wood pellet grills." This suggests they are an operating company that manufactures and sells products embodying the claims. The legal status on Google Patents indicates "Active, expires 2041-08-08" and lists "Grease Box LLC" as the "Current Assignee".

Assignment timeline

To reconstruct the full assignment record, I need to use the USPTO Assignment Search. I will search for patent number 11812895.

Based on the Google Patents "Legal Events" section:

• 2022-08-29 (executed on 20220829) / recorded 2022-08-29 — Reel 061355/0271

  • Conveyance: Assignment
  • Assignor: Beaumont, Amy
  • Assignee: THE GREASE BOX LLC, ARIZONA
  • Correspondent: Not specified in Google Patents legal events. I would need to access the full USPTO assignment record for this detail.
  • Context: Transfer of inventor's interest.

• 2023-10-05 (executed on 20231004) / recorded 2023-10-05 — Reel 065137/0603

  • Conveyance: Assignment
  • Assignor: HILLMAN, MARKUS DALE
  • Assignee: THE GREASE BOX LLC, ARIZONA
  • Correspondent: Not specified in Google Patents legal events. I would need to access the full USPTO assignment record for this detail.
  • Context: Transfer of inventor's interest.

These two entries from the Google Patents legal events indicate that the individual inventors assigned their rights to THE GREASE BOX LLC. There are no other assignments listed in the Google Patents legal events, suggesting that THE GREASE BOX LLC is the current owner. Without direct access to the USPTO Assignment Center search results for this specific patent number, I cannot provide the correspondent information for these assignments or confirm if there are any additional unlisted assignments.

Timeline diagram

timeline
    title Ownership of US 11812895
    2020 : Filed by Grease Box LLC
    2022 : Inventor Beaumont assigns to Grease Box LLC
    2023 : Inventor Hillman assigns to Grease Box LLC
    2023 : Patent Issued to Grease Box LLC
    2025 : Litigation filed (WA Western District)

NPE / troll-pattern signals

1. Shell-entity transfer — Not present. The assignments are from individual inventors to "THE GREASE BOX LLC, ARIZONA," which appears to be the operating company mentioned as the original assignee.
2. Known asserter in the chain — Not present. "THE GREASE BOX LLC" does not appear on public NPE lists, nor is it a known defensive aggregator.
3. Repeat correspondent across the chain — Unclear. Correspondent information is not available in the provided Google Patents legal events. This would require direct access to USPTO Assignment Center records.
4. Cascading transfers — Not present. Only two assignments are noted, both from individual inventors to the same entity, and they are over a year apart.
5. Pre-litigation transfer — Unclear. While litigation is mentioned (2:25-cv-01300, filed in 2025), the exact date is not provided. The last assignment was in October 2023. If the litigation was filed within six months of the patent issuance (November 2023), it might be a signal, but the transfer dates predate the patent issuance.
6. Bankruptcy fire-sale — Not present. No indication of bankruptcy for Grease Box LLC.
7. Privateering — Not present. No information suggests this.
8. Defensive aggregator (anti-NPE) — Not present. The chain does not terminate at a known defensive aggregator.

Verdict

Operating-company assertion

The assignments show the inventors assigning their rights to "THE GREASE BOX LLC" (Reel 061355/0271 and Reel 065137/0603). This entity is also listed as the original assignee and is described as producing "grease containment systems." The presence of district court litigation (case number 2:25-cv-01300) suggests an assertion, but it appears to be by an operating company, not an NPE, given the direct chain of ownership from the inventors to the company associated with the product.

USPTO Assignment Center Search for US11812895

The following are the most relevant prior art references for US patent 11,812,895, identified from its citations. The analysis focuses on potential anticipation under 35 U.S.C. § 102, comparing the cited prior art to the independent claims (Claim 1 and Claim 16) of US11812895.

Most Relevant Prior Art for US11812895

1. US4909137A

   • Full Citation: US4909137A, "Cooking grill grease catcher," by Giuliano Brugnoli.
   • Publication Date: March 20, 1990.
   • Brief Description: This patent describes a device specifically designed for catching grease from a cooking grill.
   • Potential Anticipation (35 U.S.C. § 102): This reference is highly relevant as it directly addresses the problem of grease collection from grills. It likely anticipates elements of Claim 1(a) ("at least one receptacle structured and arranged to receive and collect fluid draining from the outdoor cooking device"). Depending on its structural details, it could also anticipate Claim 1(b) ("an enclosure structured and arranged to enclose said at least one receptacle"). However, without reviewing the full patent, it is uncertain if it discloses the specific features of US11812895, such as a separable upper and lower enclosure, a mounting flange extending outwardly from the upper portion to mount to a drain, an insulation layer (especially an air gap), or thermal vents with dampers for airflow control.

2. US6463924B1

   • Full Citation: US6463924B1, "Grease collection device for a grill," by Kevin J. Osterman.
   • Publication Date: October 15, 2002.
   • Brief Description: This patent describes a device specifically for collecting grease from a grill.
   • Potential Anticipation (35 U.S.C. § 102): Similar to US4909137A, this reference directly describes a "grease collection device for a grill," thereby potentially anticipating Claim 1(a) ("at least one receptacle structured and arranged to receive and collect fluid draining from the outdoor cooking device"). It may also anticipate Claim 1(b) if the device includes an enclosure. The distinguishing features of US11812895, such as the two-part separable enclosure, specific drain mounting from the upper portion, insulation layer, and adjustable dampened vents (for Claim 16), would need to be thoroughly compared against the full disclosure of this patent.

3. US20080271613A1

   • Full Citation: US20080271613A1, "BBQ Grill Fire Guard," by Daniel Lee.
   • Publication Date: November 6, 2008.
   • Brief Description: This patent describes a fire guard specifically for a BBQ grill. A key aspect of US11812895 is fire prevention through controlled ventilation.
   • Potential Anticipation (35 U.S.C. § 102): This reference is particularly relevant for Claim 16, which introduces thermal vents with dampers for fire suppression. A "Fire Guard" would inherently deal with mitigating fire risks. If this patent discloses an enclosure around a grease receptacle that includes thermal vents and, more critically, dampers to control airflow (and thus oxygen to a potential grease fire), it could strongly anticipate Claim 16(f) and Claim 16(g) ("at least one thermal vent structured and arranged to vent heat from the fluid collected" and "wherein said at least one thermal vent comprises at least one damper structured and arranged to dampen air flow through said enclosure"). Further review of the full document is needed to determine if it also anticipates the separable upper/lower portions, specific drain mounting, and insulation layer of Claim 1 and 16.

4. US20180228317A1

   • Full Citation: US20180228317A1, "Vertical Grill With External Drip Tray Module," by Bonnie Lee Buzick.
   • Publication Date: August 16, 2018.
   • Brief Description: This patent describes a vertical grill that includes an external drip tray module. The term "drip tray module" suggests a comprehensive system for collecting fluids.
   • Potential Anticipation (35 U.S.C. § 102): This reference is a very strong candidate for anticipating many elements of Claim 1 and Claim 16. An "External Drip Tray Module" inherently includes a receptacle (Claim 1a) and an enclosure (Claim 1b). The term "module" also suggests a potentially separable or distinct component, which could overlap with the "separable from the upper portion" aspect of Claim 1(c). The critical points of comparison for anticipation would be whether this module specifically features: a mounting flange extending outwardly from an upper portion of the enclosure to attach to the drain of the cooking device (Claim 1c), an insulation layer (particularly an air gap) between the receptacle and enclosure walls (Claim 1d), and especially for Claim 16, thermal vents with dampers for controlling airflow and fire prevention (Claim 16f, 16g). A detailed review of this patent is necessary to assess the full extent of anticipation.

5. US20170020336A1

   • Full Citation: US20170020336A1, "Removable Grill Drain Pan Liner," by ColBar LLC.
   • Publication Date: January 26, 2017.
   • Brief Description: This patent describes a removable liner for a grill drain pan, used for collecting fluids.
   • Potential Anticipation (35 U.S.C. § 102): This reference directly relates to fluid collection from a grill's drain. The "removable grill drain pan liner" strongly anticipates Claim 1(a) ("at least one receptacle structured and arranged to receive and collect fluid draining"). The presence of a "drain pan" could imply an enclosure or part of one (Claim 1b). However, the specific structural requirements of US11812895's claims, such as the two-part separable enclosure, the specific mounting to the drain from an upper portion, the insulation layer, and dampened thermal vents, would be the primary areas of distinction.

6. US6237472B1

   • Full Citation: US6237472B1, "Drip collector," by Richard L. Gates.
   • Publication Date: May 29, 2001.
   • Brief Description: This patent describes a device designed to collect drips, likely from cooking processes.
   • Potential Anticipation (35 U.S.C. § 102): As a "drip collector," this patent likely anticipates the fundamental element of Claim 1(a) ("at least one receptacle structured and arranged to receive and collect fluid draining from the outdoor cooking device"). The extent to which it further anticipates the specific features of US11812895's enclosure, mounting mechanism, insulation, and controlled ventilation would require examination of the full patent document.

Obviousness Analysis under 35 U.S.C. § 103 for US Patent 11,812,895

This analysis identifies combinations of prior art references that would render the claims of US Patent 11,812,895 obvious to a person having ordinary skill in the art (PHOSITA) as of the priority date (August 4, 2020), along with the motivation for such combinations.

Independent Claim 1 Analysis

Claim 1 describes a system for catching fluid drainage from an outdoor cooking device, comprising: a receptacle, an enclosure with an upper and lower separable portion, a receptacle support within the lower portion, a mount on the upper portion (with a mounting flange and drain mount) to connect to the outdoor cooking device's drain, an insulation layer between the receptacle and enclosure walls, and the enclosure being directly exposed to the outdoor environment.

Proposed Combination: US4909137A (Brugnoli) in view of US20130313256A1 (Brown) and general knowledge of modular design principles for maintenance.

References Overview:

• Brugnoli (US4909137A): Discloses a cooking grill grease catcher comprising a pan (receptacle) and a housing (enclosure) for enclosing the pan. It includes means for supporting the pan and mounting the housing to the grill. The device is intended for outdoor use with a cooking grill.
• Brown (US20130313256A1): Describes a grease container with an outer shell and an inner receptacle. Crucially, it teaches that "the outer shell also provides thermal insulation for the inner receptacle thereby enabling hot grease to cool slowly within the inner receptacle prior to disposal." This insulation can include an air gap.
• General Knowledge: A PHOSITA would be aware of common engineering practices for designing products for ease of cleaning and maintenance, often involving separable or modular components.

Detailed Obviousness Argument for Claim 1:

1. Receptacle and Enclosure (Claim 1a, 1b): Brugnoli clearly discloses a pan structured to receive and collect fluid draining from a cooking grill, and a housing structured to enclose this pan. This directly addresses the receptacle and enclosure elements.
2. Upper and Lower Separable Portions (Claim 1c, part 1): While Brugnoli does not explicitly show the housing having a separable upper and lower portion, the concept of making containers or housings modular for ease of access, cleaning, or disposal is well-known in the art. For example, existing drip collectors often feature removable pans or assemblies for cleaning (e.g., US6237472B1 by Gates, US6463924B1 by Osterman). A PHOSITA, seeking to improve the maintainability and ease of emptying the grease catcher of Brugnoli, would find it obvious to design the enclosure with a separable lower portion, allowing easy removal of the grease-collecting receptacle without detaching the entire system from the grill. This represents a routine design choice to enhance user convenience.
3. Receptacle Support (Claim 1c, part 2): Brugnoli explicitly teaches "means for supporting the pan" within the housing. If the enclosure is designed with a separable lower portion, it would be an obvious design choice for the receptacle support to be located within this lower portion to ensure the receptacle is properly held when the lower portion is removed or replaced.
4. Mount on Upper Portion with Mounting Flange (Claim 1c, part 3): Brugnoli discloses "means for... mounting the housing to the grill." Given a design where the lower portion is separable for cleaning, it would be logical for a PHOSITA to place the primary mounting mechanism on the stationary upper portion of the enclosure. This ensures stability and maintains the connection to the grill while the lower portion is being serviced. Designing a "mounting flange extending outwardly" with a "drain mount" is a common and obvious structural adaptation to interface with the various drain configurations of outdoor cooking devices.
5. Insulation Layer (Claim 1d): Brown teaches that an "outer shell also provides thermal insulation for the inner receptacle thereby enabling hot grease to cool slowly within the inner receptacle prior to disposal." The patent in question explicitly describes an air gap as a preferred insulation layer. A PHOSITA, recognizing the safety benefits of preventing burns from hot surfaces and desiring to allow grease to cool slowly (as articulated by Brown), would be motivated to incorporate an insulation layer (such as an air gap) between the grease-collecting pan and the outer walls of Brugnoli's housing.
6. Directly Exposed to Outdoor Environment (Claim 1e): Brugnoli's device is a "cooking grill grease catcher", implying its use with outdoor cooking devices and direct exposure to the outdoor environment.

Motivation to Combine for Claim 1: A PHOSITA, starting with Brugnoli's grease catcher (US4909137A) and seeking to improve its safety and user-friendliness, would be motivated to incorporate thermal insulation to prevent burns and facilitate grease cooling, a concept clearly taught by Brown (US20130313256A1). Furthermore, to make the device easier to clean and empty, a PHOSITA would apply common modular design principles to create a separable lower portion for the enclosure, thereby allowing convenient access to the grease receptacle without dismantling the entire unit from the grill. Locating the primary mounting means on the upper portion in such a design would be an obvious and logical engineering choice to ensure structural integrity during maintenance.

Independent Claim 16 Analysis

Claim 16 is similar to Claim 1 but explicitly includes the outdoor cooking device and further specifies that at least one thermal vent is included in the enclosure walls, and this thermal vent comprises at least one damper structured to dampen airflow through the enclosure.

Proposed Combination: US4909137A (Brugnoli) in view of US20130313256A1 (Brown), US20080271613A1 (Lee), and general knowledge of airflow control mechanisms.

References Overview:

• Brugnoli (US4909137A): (As above) Discloses a grease catcher for an outdoor cooking device.
• Brown (US20130313256A1): (As above) Teaches thermal insulation and a "vented lid" for the grease container.
• Lee (US20080271613A1): Discloses a "BBQ Grill Fire Guard" with the primary objective of "preventing grease fires." It describes a fire extinguishing apparatus for a grease container.
• General Knowledge: Dampers are common mechanical devices for controlling airflow in various applications (e.g., HVAC, industrial vents, fireplace flues) to manage temperature, oxygen levels, or prevent backdrafts.

Detailed Obviousness Argument for Claim 16:

1. Elements 16a-16e: The combination of Brugnoli and Brown, as detailed in the Claim 1 analysis, would meet these elements, including the outdoor cooking device itself.
2. Thermal Vent (Claim 16f): Brown (US20130313256A1) discloses a "vented lid" for its grease container, demonstrating the known need for ventilation in grease collection systems. Similarly, the abstract of US11812895B2 emphasizes "allowing ventilation of the heat from the grease collected." A PHOSITA would find it obvious to add thermal vents to the walls of the enclosure (e.g., Brugnoli's housing) to allow heat from the collected fluid to escape, thereby promoting cooling and reducing the overall temperature of the system.
3. Thermal Vent with Damper (Claim 16g): Lee (US20080271613A1) directly addresses the problem of "preventing grease fires" in BBQ grills. The current patent's abstract explicitly links adjustable vents with dampening ventilation to "suppression of fire potential inside the enclosure" and "control of oxygen". Given the known hazard of grease fires (as highlighted by Lee) and the need for ventilation to cool hot grease (as in Brown's "vented lid"), a PHOSITA would be motivated to incorporate a mechanism to control this ventilation. Dampers are a well-known and straightforward engineering solution for regulating airflow. Adding a damper to the thermal vents would be an obvious step to allow users to control the amount of air circulation, thereby managing the oxygen supply within the enclosure to mitigate fire risk, consistent with Lee's objective of fire prevention.

Motivation to Combine for Claim 16: A PHOSITA, building upon the improved grease containment system of Claim 1 (Brugnoli + Brown), would further address critical safety concerns related to grease fires. Recognizing the fire hazard from hot grease (as detailed in Lee's "BBQ Grill Fire Guard" patent), and already having incorporated ventilation to cool the grease (as suggested by Brown's "vented lid"), a PHOSITA would be strongly motivated to implement a means to control this ventilation. Employing a damper on the thermal vents would be an obvious engineering solution, providing the ability to restrict oxygen flow into the enclosure and thereby actively suppress the potential for grease fires, directly aligning with the safety objectives in the prior art.

To determine the patent term adjustments (PTA), patent term extensions (PTE), continuation/divisional applications, related family members, and the projected expiration date for US Patent 11,812,895, I will utilize the USPTO Patent Center and other relevant USPTO resources.

Patent Term Adjustments (PTA)

Patent Term Adjustments (PTA) are awarded to compensate for certain delays incurred by the USPTO during the prosecution of a patent application (utility or plant patents). These delays can include failing to issue a first office action within 14 months, failing to respond to an applicant's reply within 4 months, or failing to issue a patent within 3 years of the filing date. Applicant delays can, however, reduce the length of any adjustment.

The patent document itself, particularly the Google Patents entry, typically provides an "Adjusted expiration" date, which incorporates any PTA. For US Patent 11,812,895, the "Legal status" section on Google Patents states "Active, expires 2041-08-08" and indicates this as the "Adjusted expiration". This implies that PTA has been calculated and applied to extend the patent term. Without directly accessing the USPTO's Patent Center or the issue notification, the precise breakdown of the PTA calculation (e.g., A, B, C delays, and applicant delays) cannot be provided.

Patent Term Extensions (PTE)

Patent Term Extensions (PTE) are available for patents on certain human drug products, medical devices, animal drugs, and food or color additives to compensate for time lost during regulatory review before marketing approval.

Given that US Patent 11,812,895 relates to "Grease containment systems" for "outdoor cooking devices", it does not fall into the categories of products eligible for PTE (i.e., human drugs, medical devices, etc.). Therefore, it is highly unlikely that this patent has received any Patent Term Extension under 35 U.S.C. § 156.

Continuation and Divisional Applications

• Continuation applications are subsequent applications filed during the pendency of an earlier non-provisional application, claiming the same invention.
• Divisional applications are also subsequent applications filed during the pendency of an earlier non-provisional application, but they claim only subject matter disclosed in the earlier application that was "divided out" of the parent application.

The Google Patents page for US11812895 lists "Priority Applications" and "Related Child Applications".

• Priority Applications:

  • US16/984,646 (which is the application number for US11812895B2 itself, filed 2020-08-04)
  • US18/377,169, titled "System and Method for Grease Containment for an Outdoor Cooking Device", filed 2023-10-05, and published as US20240023757A1. This appears to be a continuation or continuation-in-part application, claiming priority to US16/984,646.
  • US18/944,975, titled "Grease Containment Systems", filed 2024-11-12, and published as US20250072663A1. This also appears to be a continuation or continuation-in-part application, claiming priority to US16/984,646.

• Related Child Applications:

  • US18/377,169, listed as a "Continuation-In-Part" with the title "System and Method for Grease Containment for an Outdoor Cooking Device", filed 2023-10-05, and published as US20240023757A1.

Based on this information, US Patent 11,812,895 has at least two related continuation or continuation-in-part applications: US18/377,169 and US18/944,975. No explicit divisional applications are mentioned.

Related Family Members

The patent family includes documents that cover the same invention and share at least one common inventor, showing a patent lineage back to a priority date.

Based on the Google Patents information, the family members include:

• US11812895B2 (the granted patent)
• US20220039597A1 (an earlier publication of the application that led to US11812895B2)
• US20240023757A1 (publication of US18/377,169, identified as a Continuation-In-Part)
• US20250072663A1 (publication of US18/944,975, identified as a priority application)

The "Family" section on Google Patents lists "Application Number US16/984,646" as the application for US11812895B2. The "Priority Applications" and "Related Child Applications" indicate other family members that stem from this priority.

Projected Expiration Date

The statutory patent term for utility patents filed on or after June 8, 1995, is generally 20 years from the earliest filing date of the application, subject to any patent term adjustments or extensions.

• Earliest Filing Date: The filing date for US11812895 is August 4, 2020. This is also listed as the priority date.
• Base Expiration Date (without adjustments): 20 years from August 4, 2020, would be August 4, 2040.
• Adjusted Expiration Date (with PTA): Google Patents explicitly states the "Adjusted expiration" as August 8, 2041. This indicates that approximately one year and four days of PTA have been granted to the patent.

Therefore, the projected expiration date for US Patent 11,812,895 is August 8, 2041.