In a closely watched case that may determine how far companies can go when demanding fees for patents they’ve licensed, several Supreme Court justices Wednesday seemed open to limiting patent-holders’ rights in connection with the use of their products by downstream purchasers in the manufacturing process.

The case before the Court was a dispute between Taiwanese computer maker Quanta Computer and Korea-based LG Electronics over what Quanta claims are duplicative license fees LG seeks to impose for computer memory technology patents that LG licensed to Intel Corp.