A Utah company has filed a lawsuit against Apple and Nike, claiming the two firms stole its idea for the Nike+iPod Sport Kit.

The two brothers behind athletic clothing company Leaper Footwear, Greg and Kenny Anderson, are making these claims.

They say they patented a range of footwear in 1998 that measures such data as running speed or distance travelled.

The brothers sent a letter to Nike in 2000 in which they suggested the larger firm license the patented technologies, but Nike replied it had "no interest" in the idea.

Then, in May 2006, Nike and Apple revealed the Nike+iPod Sport Kit, which integrates ideas the Utah firm had suggested in the first place.

The Andersons allege Nike and Apple to have generated "hundreds of millions of dollars in infringing sales" of iPod nanos, Nike + shoes, and Nike + iPod Sport Kits," AppleInsider reports.

Leaper Footwear is chasing triple damages and an injunction forbidding sale of the Sport Kit