Apple turns legal screws on Nokia - Wikimedia Commons

The spat between Apple and Nokia over phone technology ratched up a knot on Friday when the Cupertino company filed a further complaint with US body the International Trade Commission (ITC).

The fed agency probes unfair trade practices and Nokia had already complained to the ITC in December, claiming Apple breached seven patents it owns, and wanting the body to ban imports of rather important products such as the MacBook, the iPhone, and the iPod.

Although Apple is an Apple pie American company, it uses various ODMs (original design manufacturers) in the Far East to make equipment for it.

Nokia and Apple are already in a bitter and twisted fight in US courts over patents. Nokia claims Apple has infringed a number of patents it owns and wants damages. Apple claims Nokia infringes its patents.

Yet, back at the Etre conference in early October, Oli-Pekka Kallasvuo shrugged off competition from Apple and the iPhone. According to TG Daily, Kallasvuo said that Nokia needed to compete with "new people" like Apple as well.

Nokia, according to the Bloomberg wire, will have a close look at the complaint and alleged Apple was riding on the Finnish firm's coat tails.