Prior art

To identify the most relevant prior art for US Patent 12221196, I need to access the patent's full citation list from the USPTO database. Since I cannot directly browse the USPTO database in real-time, I will simulate the process based on how patent citations are typically presented in patent documents themselves.

Based on the provided patent text for US12221196B1, the "Prior art keywords" section lists: "swimming pool", "sinking", "floating", "pool robot", "subunit". However, these are keywords, not specific patent citations.

The "Legal status" section of the patent on Google Patents shows "Prior art date 2024-07-26", but it doesn't list any specific prior art patents. The full patent text does not explicitly list "prior art references" in a dedicated section with citations.

Therefore, without direct access to the USPTO database to search for "Cited By" references for US12221196B1, or an explicit "Prior Art References" section within the provided text, I cannot provide a list of specific prior art patents cited by this patent.

In a real-world scenario as a patent analyst, I would navigate to the USPTO Patent Public Search (PPUBS) or Patent Center and search for patent number 12221196. I would then look for the "References Cited" section of the patent document to identify all prior art patents and publications that were considered by the patent examiner during prosecution. Once retrieved, I would analyze each cited reference for its publication/filing date, a brief description, and then compare its teachings to the claims of US12221196 to assess potential anticipation under 35 U.S.C. § 102.

Since I do not have this information in the provided text, I must state that I cannot identify the most relevant prior art for US patent 12221196 at this time.