What are Kind Codes in patent documents and how are they used?
Kind Codes, also known as WIPO Standard ST.16 codes, are letters and numbers used to distinguish different types of patent documents and their publication levels. The MPEP states: “WIPO Standard ST.16 codes (kind codes) include a letter, and in many cases a number, used to distinguish the kind of patent document (e.g., publication of an…
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