Apple Computer has filed a second copyright lawsuit and a trade complaint in the US against Creative Technology.
This is the latest in a string of legal challenges and counter challenges between the two rival makers of portable media devices.
In its latest lawsuit, Apple claims Creative is infringing three patents relating to using icons, and displaying and editing data.
It is asking for cash damages and a court order to stop Creative from further breaches.

At the same time, Apple wants the International Trade Commission in Washington to block imports of Creative’s music players.