High Quality Content by WIKIPEDIA articles! Lexmark International, Inc. v. Static Control Components, Inc., 387 F.3d 522 (6th Cir. 2004), was an American legal case involving the computer printer company Lexmark, which had designed an authentication system using a microcontroller so that only authorized toner cartridges could be used. The United States Court of Appeals for the Sixth Circuit ruled that circumvention of Lexmark`s ink cartridge authentication does not violate the Digital Millennium Copyright Act (DMCA).