Apple is suing Samsung over its Galaxy line of mobile phones and tablets.
In court papers it claims the South Korean electronics company has “slavishly” copied the iPhone and iPad.
It is the latest move in a slew of litigation among phone makers and software firms over who owns the patents used in smartphones and newly popular tablet computers.
After Apple jumpstarted the tablet market with its iPad sales are predicted to go from 19.5 million last year to 154 million by 2013.
Samsung is one of the fastest growing smartphone makers and has emerged as Apple’s strongest competitor for tablets.
Things are made more complicated by the fact that Samsung makes some of the semiconductors used by Apple in its products.