Summary Box: Nokia files another lawsuit against Apple over technology patents

Summary Box: Nokia lobs another lawsuit at Apple

PATENT DISPUTE: Finnish cell phone maker Nokia Corp. has filed new patent-infringement claims against Apple Inc., this time covering the iPad.

COUNTER PUNCHES: The latest complaint follows other lawsuits by Nokia claiming that various Apple products infringe on Nokia patents. Apple had already responded with a countersuit against Nokia, saying the company chose to “copy the iPhone” to recapture its share of the high-end phone market.

UPSHOT: Patent disputes are common in the technology industry and often end with some kind of licensing agreement.