Prior art

To identify the most relevant prior art for US patent 12143606, I will search the USPTO database for the specific patent number 12143606. Then, I will examine the patent's cited references to provide the requested details.

The USPTO website provides tools for patent searches, including Patent Public Search and Patent Center. Since I cannot directly access the USPTO database or perform live searches of its internal content as an AI, I will rely on the provided patent text to identify its cited prior art. The full patent text typically includes a "References Cited" or "Prior Art" section.

Based on the provided patent text for US12143606B2, the only explicit prior art reference mentioned with a specific identifier is:

• U.S. Provisional Application Ser. No. 61/233,310

The patent states: "This application claims the benefit of U.S. Provisional Application Ser. No. 61/233,310, filed Aug. 12, 2009, which is incorporated by reference herein in its entirety."

Therefore, this provisional application serves as a foundational piece of prior art for US12143606B2.

Most Relevant Prior Art for US Patent 12143606:

1. Full Citation: U.S. Provisional Application Ser. No. 61/233,310
   • Publication/Filing Date: August 12, 2009
   • Brief Description: This provisional application is the priority document for US12143606B2, meaning it describes the foundational inventions and methods related to improved intra chroma encoding and decoding. It forms the basis upon which the claims of US12143606B2 are built and details the initial concepts that evolved into the patented methods and apparatus. The patent text itself defines the "present principles" as relating to "methods and apparatus for improved intra chroma encoding and decoding," directly tying back to the provisional application.
   • Potential Anticipation (35 U.S.C. § 102): As the direct priority document, the content of U.S. Provisional Application Ser. No. 61/233,310 would anticipate any claim in US12143606B2 that is identically disclosed or rendered obvious by the provisional application's teachings. Specifically, it would likely anticipate the core concepts of enabling multiple partition types for intra chroma coding, distinguishing chroma and luma partition sets, and methods for determining and signaling these partition types and modes as described in Independent Claims 1, 2, 10, and 14, to the extent these were disclosed in the provisional application. The provisional application provides the earliest filing date for the subject matter contained within it, thereby establishing prior art against later-filed claims.