Apple is attempting to revive a patent-infringement claim against Google's Motorola Mobility unit over touchscreen technology, according to Reuters.
Apple asked a US appeals court to reinstate the claim after the US International Trade Commission had earlier ruled that one of the related patents was invalid and Motorola hadn't infringed on the second.
Apple contends that Motorola is copying its technology that allows for transparent screens to sense multiple touches in different locations, allowing users to operate a phone by swiping or tapping the screen. The technology is fundamental to the current generation of smartphones used in virtually every such device.
The case targeted several Motorola smartphones, including the original Droid, Droid X, Cliq, Backflip and Charm, as well as the Xoom tablet.
The ITC previously ruled that the multi-touch technology was similar to a patent filed by Sony, and that Apple didn't have an exclusive claim on touch-screen technology.
Apple argued that Motorola had attempted to come up with similar technology, but failed to develop a useful touchscreen.
CNET contacted Apple and Motorola for further details and comments, but had not replied at the time of writing.
The ITC has the power to enforce an importation ban on products found to be infringing on patents, essentially stopping them from being sold in the US. Companies have used the ITC as a way to gain bargaining power when coming to terms on technology licensing.