However, the judge rejected Redbox's argument that its practice of selling digital downloads is protected by the "first-sale doctrine," a part of copyright law that says anyone who buys a copyrighted work is allowed to resell it or give it away, as long as they don't make their own copies to sell. That's the doctrine that protects used DVD stores and CD shops from copyright claims.

Source: Los Angeles Times February 21, 2018 20:03 UTC