United States Patent Classification

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The United States Patent Classification is an official patent classification system in use and maintained by the United States Patent and Trademark Office (USPTO). It was mostly replaced by the Cooperative Patent Classification (CPC) on January 1, 2013.^[1] Plant and design patents are still classified solely within USPC at the USPTO. As of December 2018, patents at the USPTO are still routed to their appropriate business and art units by their USPC, even though it is no longer assigned directly to the patents themselves.^{[citation needed]}