Cisco Systems is suing Apple to prevent it from using the name iPhone for the new smart phone Apple introduced Tuesday at the Macworld Conference & Expo in San Francisco.Cisco filed a lawsuit in Federal District Court for Northern California seeking an injunction against Apple using the name.\n\n\n\n\n\n\n\n\n\nLinksys iPhone CIT300The name iPhone is a registered trademark of Linksys, a division of Cisco. Linksys picked up the iPhone name when it bought a company called Infogear Technology in 2000. Cisco\u2019s iPhones are telephone handsets designed for use on a voice-over-IP (VoIP) network.The iPhone has proven to be the most talked-about product at this year\u2019s Macworld, and its positive reception has sent Apple\u2019s (AAPL) stock surging over the past two days. The company\u2019s stock closed at US$97 Wednesday, up nearly 5 percent for the day.Apple and Cisco have been in negotiations for about two years over Apple\u2019s desire to license the iPhone trademark, said Cisco spokesman John Noh. When Apple CEO Steve Jobs introduced the iPhone Tuesday at Macworld, Cisco had not yet received a signed trademark licensing agreement from Apple, even though the two companies had been negotiating terms as recently as Monday night.\n\n\n\n\n\n\n\n\n\nApple iPhone"Because they have been negotiating with us on licensing the trademark all this time, Apple is acknowledging that we own the name," said Noh."Cisco entered into negotiations with Apple in good faith after Apple repeatedly asked permission to use Cisco\u2019s iPhone name," said Mark Chandler, senior vice president and general counsel for Cisco. "Today\u2019s iPhone is not tomorrow\u2019s iPhone. The potential for convergence of the home phone, cell phone, work phone and PC is limitless, which is why it is so important for us to protect our brand," Chandler said.-Robert Mullins, IDG News Service (San Francisco Bureau)Related Links:\n\nCisco\u2019s Linksys\u2014Not Apple\u2014Launches iPhone VoIP Devices\n\nApple, Cingular Partner on iPhoneCheck out our CIO News Alerts and Tech Informer pages for more updated news coverage.