[citation][nom]ericburnby[/nom]Sorry, you're wrong. There are countless patents for hammers and light bulbs. If you invent a better hammer, you're allowed to patent it, as long as it's different from existing hammers.Another complaint people try to use to invalidate a patent is saying it's obvious. Obvious to who? All good ideas are obvious AFTER you've seen it. That's why people go "why didn't I think of that?" when they some new idea.[/citation]
On the flip side, how do you identify innovation for software or hardware? What do you do when companies (such as Rambus) sit on their patents for more than a decade and never attempt to use it other than setting up a minefield for other companies? What do you do if someone patented your design, YEARS after you were the first one to build it, and got sued?