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by TAKEMYMONEY 1225 days ago
The Copyright Office’s Compendium of U.S. Copyright Office Practices, 3rd Edition states that:

> procedures, processes, and methods of operation are not copyrightable, the Office generally will refuse to register claims based solely on CSS.

Also W3C maintains a public list of any patent disclosures: https://www.w3.org/groups/wg/css/ipr