Nokia has filed a patent counter-suit against Qualcomm in a Texas court, seeking damages and an injunction against the U.S. chip maker. Nokia, which makes more than one in three of the cell phones sold globally, said on Monday it had filed a suit accusing Qualcomm of infringing six implementation patents in its MediaFLO mobile TV and Brew mobile data technologies.

Qualcomm said it was disappointed, but not surprised, by the Nokia action, which it called "standard-issue tactics" in legal disputes such as the larger licensing battle between them.

A legal brawl between the two firms has continued since part of a cross-licensing deal over technology patents expired on April 9.

Qualcomm has filed 11 patent suits against Nokia in less than two years, seeking damages and injunctions, so far without success. Last month Nokia filed its first counter-suit against Qualcomm, in Wisconsin, related to chipset technologies.

The legal dispute centers on Nokia's use of Qualcomm patents for high-speed 3G wireless technology, but also has a bearing on Qualcomm's chips business, which Nokia says uses many Nokia- patented technologies.

Qualcomm has also been fighting over patents with rival Broadcom Corp..