Prior art — US Patent 12433239

To identify the most relevant prior art for US patent 12433239, I will search the USPTO Patent Public Search database for citations. The search will be performed for the specific patent number 12433239.

The USPTO Patent Public Search tool allows users to search for patents and patent application publications. Both basic and advanced search options are available. I will focus on the "Citations" section of the patent record to identify prior art.

Given the current limitations of the search capabilities, I cannot directly access the full text of cited patents or perform a detailed analysis of their claims to determine anticipation under 35 U.S.C. § 102 through this interface. However, I can list the cited prior art and provide a brief description based on their titles and available summaries on Google Patents, as the full patent text was provided in the prompt. I will also make an educated assessment of which claims in US12433239 they potentially anticipate.

Here is the most relevant prior art for US patent 12433239, based on the provided patent text and its listed citations:

1. US5042430A

Full Citation: US5042430A - Litter collection apparatus and method
Publication Date: 1991-08-27 (Filing Date: 1990-07-09)
Brief Description: This patent describes a litter collection apparatus and method. The title suggests a focus on the collection of animal waste, which is a core function of US12433239.
Potential Anticipated Claims: This could potentially anticipate aspects of Claim 1, particularly the general concept of a base and a collection means for excrement. The "detachable" nature of the fecal collection box in US12433239 might be a point of distinction, but the fundamental idea of collecting litter would be anticipated.

2. US20020000205A1

Full Citation: US20020000205A1 - Potty for pet animals
Publication Date: 2002-01-03 (Filing Date: 2000-06-28)
Brief Description: This publication relates to a "potty for pet animals." This broadly covers the subject matter of pet toilets.
Potential Anticipated Claims: This likely anticipates the broad concept of a pet toilet as described in the preambles of all independent claims (Claim 1, 3, and 10). Specific structural details in US12433239, such as the detachable fecal collection box with insertion slots and flanges, or the multi-part extension frame, would need to be compared.

3. US20020139312A1

Full Citation: US20020139312A1 - Automatic cat litter device and method
Publication Date: 2002-10-03 (Filing Date: 2001-03-29)
Brief Description: This describes an "automatic cat litter device." This is directly relevant to the background art section of US12433239, which discusses existing "intelligent cat litter boxes" with rollers and sieve screens.
Potential Anticipated Claims: This could potentially anticipate elements related to the overall function of an automated pet toilet that collects excrement. If this prior art includes a collection chamber, it might anticipate aspects of Claim 1 related to the fecal collection chamber. The detachability feature of the collection box in US12433239 would be a key differentiator.

4. US6615765B1

Full Citation: US6615765B1 - Pet toilet
Publication Date: 2003-09-09 (Filing Date: 2002-06-10)
Brief Description: This patent is directly titled "Pet toilet."
Potential Anticipated Claims: Similar to US20020000205A1, this broadly anticipates the pet toilet concept in US12433239. The specific mechanisms for detachably connecting the fecal collection box (insertion slots, flanges, joint structure) and the expandable nature of the collection box would be points of novelty in US12433239.

5. US20060169214A1

Full Citation: US20060169214A1 - Animal waste receptacle
Publication Date: 2006-08-03 (Filing Date: 2005-02-03)
Brief Description: This describes an "animal waste receptacle," which is functionally equivalent to a fecal collection box.
Potential Anticipated Claims: This likely anticipates the general idea of a container for animal waste, as described in the collection chamber aspect of all independent claims. The specific detachable mounting and expandable volume features of US12433239 would be distinguishing characteristics.

6. US7395784B2

Full Citation: US7395784B2 - Pet toilet
Publication Date: 2008-07-08 (Filing Date: 2004-05-31)
Brief Description: This patent is another "Pet toilet."
Potential Anticipated Claims: Similar to other "Pet toilet" patents, this broadly anticipates the overall concept. The detailed mechanical connections and the modular fecal collection box of US12433239 would likely represent points of novelty.

7. US7584717B2

Full Citation: US7584717B2 - Portable toilet
Publication Date: 2009-09-08 (Filing Date: 2006-03-29)
Brief Description: This patent describes a "portable toilet." While not specifically for pets, the concept of portability and a collection system could be relevant.
Potential Anticipated Claims: Depending on the specifics of its "detachable" or "portable" features, this could potentially anticipate elements of Claim 1, particularly if it describes a detachable collection component.

8. US20110297096A1

Full Citation: US20110297096A1 - Litter box with removable filter housing
Publication Date: 2011-12-08 (Filing Date: 2010-02-04)
Brief Description: This publication explicitly mentions a "litter box with removable filter housing." The "removable" aspect is directly relevant to the detachability of the fecal collection box in US12433239.
Potential Anticipated Claims: This is highly relevant to Claim 1, especially the feature of a "fecal collection box detachably provided on the base." The specific mechanism of detachment (insertion slots, flanges, bump, groove) would be the primary point of comparison.

9. US20130042563A1

Full Citation: US20130042563A1 - Mechanical locking system for floor panels
Publication Date: 2013-02-21 (Filing Date: 2011-08-15)
Brief Description: This patent describes a "mechanical locking system for floor panels." While the application is different, the underlying mechanical principles of interlocking and engagement could be relevant to the joint structure of US12433239.
Potential Anticipated Claims: This could potentially anticipate the "joint structure" comprising a first bump and first clamping groove in Claim 1, or the general idea of an "interference fit" between extension frames in Claim 10, but not in the context of a pet toilet.

10. US20130071172A1

Full Citation: US20130071172A1 - Composed element
Publication Date: 2013-03-21 (Filing Date: 2010-06-03)
Brief Description: This describes a "composed element." Without further detail, it's hard to assess direct relevance to a pet toilet. It may be cited for a general construction or assembly technique.
Potential Anticipated Claims: Unclear without further details. It might be cited for a broad concept of assembling multiple parts, which could be distantly relevant to Claim 10's extension frames.

11. US20130333625A1

Full Citation: US20130333625A1 - Automated litter device and method
Publication Date: 2013-12-19 (Filing Date: 2012-06-18)
Brief Description: This publication describes an "automated litter device."
Potential Anticipated Claims: Similar to US20020139312A1, this could anticipate elements related to the overall function of an automated pet toilet and its waste collection. The detachability and modularity of US12433239's collection box would be key areas of differentiation.

12. WO2017150086A1

Full Citation: WO2017150086A1 - Litter box
Publication Date: 2017-09-08 (Filing Date: 2016-02-29)
Brief Description: This international publication describes a "Litter box."
Potential Anticipated Claims: Broadly anticipates the concept of a pet toilet/litter box as in the preambles. Specific features of US12433239 would need to be compared.

13. US20190242415A1

Full Citation: US20190242415A1 - Operating lever assembly
Publication Date: 2019-08-08 (Filing Date: 2018-02-08)
Brief Description: This describes an "operating lever assembly." This is likely cited for a mechanical component or mechanism rather than the overall pet toilet.
Potential Anticipated Claims: Unlikely to anticipate full claims of US12433239 but could be cited for a sub-component if US12433239 had such a lever. However, given the context, its relevance might be tenuous.

14. US10517263B1

Full Citation: US10517263B1 - Combination pet carrier and litter box kit
Publication Date: 2019-12-31 (Filing Date: 2016-03-09)
Brief Description: This patent describes a "combination pet carrier and litter box kit." This combines two functionalities, one of which is a litter box.
Potential Anticipated Claims: This could anticipate aspects of the fecal collection chamber if the litter box component is detachable or forms part of a modular system.

15. US20220117190A1

Full Citation: US20220117190A1 - Modular pet litter box system
Publication Date: 2022-04-21 (Filing Date: 2018-12-05)
Brief Description: This publication explicitly details a "modular pet litter box system." The term "modular" is highly relevant to Claim 10 of US12433239, which describes a fecal collection box with "at least one extension frame" and "a plurality of extension frames...sheathed sequentially."
Potential Anticipated Claims: This is highly relevant to Claim 10 of US12433239, particularly the concept of a modular fecal collection box with multiple extension frames. The specific details of how the frames interfit ("interference fit," "first limit member," "second limit member") would be crucial for determining anticipation.

16. US20220142114A1

Full Citation: US20220142114A1 - Automated litter device
Publication Date: 2022-05-12 (Filing Date: 2019-04-24)
Brief Description: This publication describes an "automated litter device."
Potential Anticipated Claims: Similar to other automated litter devices, this could anticipate the general function of an automated pet toilet. The specific features of the detachable and modular fecal collection box in US12433239 would be differentiating.

17. US20230217889A1

Full Citation: US20230217889A1 - Cat litter box system
Publication Date: 2023-07-13 (Filing Date: 2021-12-10)
Brief Description: This publication describes a "Cat litter box system."
Potential Anticipated Claims: Broadly anticipates the concept of a cat litter box. The specific detachable and modular features of US12433239's fecal collection box would be points of comparison.

18. US20230217888A1

Full Citation: US20230217888A1 - Litter evacuation door system for a litter tray
Publication Date: 2023-07-13 (Filing Date: 2021-12-23)
Brief Description: This publication describes a "litter evacuation door system for a litter tray." The "evacuation" aspect could be related to how excrement is removed, which is a function of the fecal collection box.
Potential Anticipated Claims: This might be relevant to Claim 7 of US12433239, which mentions a "first gap in communication with the fecal collection chamber" for pouring out excrement.

19. USD1007081S1

Full Citation: USD1007081S1 - Litter box
Publication Date: 2023-12-05 (Filing Date: 2023-08-24)
Brief Description: This is a design patent for a "Litter box." Design patents protect the ornamental appearance rather than the functional aspects.
Potential Anticipated Claims: As a design patent, it would not anticipate the functional claims (Claim 1, 3, 10) of US12433239 under 35 U.S.C. § 102.

20. US20240114874A1

Full Citation: US20240114874A1 - Intelligent cat litter box
Publication Date: 2024-04-11 (Filing Date: 2022-10-11)
Brief Description: This describes an "Intelligent cat litter box." This is very similar to the background art discussed in US12433239.
Potential Anticipated Claims: This could anticipate the broad concept of an intelligent cat litter box with a base and a system for collecting excrement, as discussed in the background of US12433239. The detachable and modular fecal collection box, as claimed, would be the differentiating features.