Now it's clear why Apple a couple of days ago
threatened Palm with a trial for using multi-touch navigation in the latest model of the Palm Pre smartphone.
Reasons for this really is. According to the US Patent Office, on January 20, 2009, Apple received a
patent No. 7,479,949 , which covers various applications of multitouch technology, including navigation, gestures, etc.

Although the word “multitouch” is not mentioned in the title of the patent, but the text of the patent describes everything in some detail.
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If you want to touch on your computer, you’ll be able to device, and processing the command. For example, it’s not a problem, you’ll have to For more information please contact us.Among dozens of authors of the invention, Steve Jobs himself is present (in the first place).
via
World of Apple