Apple sued over multitouch patent

A Taiwanese chipmaker is suing Apple over the use of multitouch technology in several products, including the iPhone, iPod Touch, and forthcoming iPad.

Elan Microelectronics filed a complaint with the International Trade Commission Tuesday, accusing Apple of violating an Elan-owned patent that covers "touch-sensitive input devices with the ability to detect the simultaneous presence of two or more fingers."

Elan claims the iPhone, iPod Touch, MacBook, and Magic Mouse are in violation of Elan's patent, No. 5,825,352, and when the iPad goes on sale this Saturday, it will be too. Elan has asked the ITC to ban the import of all five devices into the U.S.

"We have taken the step of filing the ITC complaint as a continuation of our efforts to enforce our patent rights against Apple's ongoing infringement. A proceeding in the ITC offers a quick and effective way for Elan to enforce its patent," the company said in a statement Tuesday.