[JURIST] Finnish telecommunications company Nokia [corporate website] announced Friday that it has filed a complaint [press release] in the US District Court in the Western District for Wisconsin [official website] alleging that Apple [corporate website] iPad and iPhone 3G products infringe five Nokia patents. The complaint claims that patents for enhanced speech and data transmission, as well as innovations in antenna configurations, are among the infringed technologies. The lawsuit is Nokia's latest move in a wide-ranging attack on Apple's patent position. In October Nokia sued Apple [JURIST report] in the US District Court for the District of Delaware [official website] for allegedly violating 10 patents [press release] on wireless technology on the iPhone. In December, Apple counter-sued, claiming Nokia had stolen 13 patents from the company.

Nokia is not the only competing corporation to have taken legal action against Apple over its iPhone brand. In November 2008, EMT Technologies Inc. sued Apple, claiming the company infringed EMT's patent [Computerworld report] for "apparatus and method of manipulating a region on a wireless device screen for viewing, zooming and scrolling Internet content." Earlier that year, Apple settled a suit [CNET report] with Klausner Technologies, which claimed Apple had infringed a patent [CNET report] relating to its visual voicemail function. In 2007, Apple was the target of another patent infringement suit relating to the iPhone keyboard [Ars Technica report].