Apple Sued For Using Tabs In OS X Tiger
Let me reprise a comment of mine from several months previous:
Ford didn't invent the assembly line. The Wright brothers didn't invent the airplane. Wanamaker didn't invent the department store. Edison didn't invent the light bulb.
All these people derived inspiration from their contemporaries. All they did was "steal" ideas from others and make them better.
Steve Jobs' saying, that "real artists ship," is right on the money. Production, after all, has a more lasting impact than theory and prototype.