Excuse me? What have they patented exactly? A sticker saying "Do not remove"? Some software on the chip? And this invalidates my rights to buy, install, or use aftermarket parts or services because..... of.... what clause in patent law exactly?
Lexmark patented the design of the toner cartridges for their printers. Their argument is based on the premise that the long-standing "First Sale" doctrine doesn't apply, and that their patent rights extend to any subsequent use of their patented product, so that Impression Products' refurbishing and refilling, and subsequent sale of, expended Lexmark toner cartridges constitutes infringement of their patent. If SCOTUS rules in their favor, it would put a severe damper on, if not kill outright, the ability to sell refilled and remanufactured cartridges. Since I don't see (although IANAL) how a toner cartridge could be a sufficiently innovative and unobvious advance to justify a utilityt patent, this patent of Lexmark's would presumably be a design patent, which would have a term of 14 years; the ability to prevent knockoff and refilled cartridges from being sold would effectively give Lexmark a monopoly over sales of toner for its printers; I don't see many people continuing to use the same printer for more than fourteen years.