This case raises important questions about the reach of American patent law and how much control a manufacturer can exert after its products have been lawfully sold. Taken to their logical conclusion, Lexmark’s arguments would mean that producers could use patent law to dictate how things like computers, printers and other patented goods are used, changed or resold and place restrictions on international trade.
Source: Patent Law Shouldn’t Block the Sale of Used Tech Products
To encourage innovation, the government gives inventors patents on their creations for a limited time. But patents should not give the manufacturer indefinite control over the product after it has been sold.