The popular iPhone is facing its second lawsuit, with SP Technologies suing Apple over the touch-screen keyboard.
The firm claims Apple is infringing on a patent it holds for a similar keyboard.
AppleInsider dug up the SP patent filing from 2000, which claims the company developed a "method of providing a user interface for receiving information from a user using a user immutable graphical keyboard linked to an input area."
Apple's not exactly the first company to ever use a touch-screen style input method. But this one will probably require more effort to defend than the iPhone battery suit filed a few weeks ago.
SP Technologies filed the suit in the US last Thursday.
An Apple representative did not immediately return a call seeking comment by presstime.
Didn't Apple have this technology on their first newton device in 1991. I'm not sure about patent law, but it could be invalid.