Apple getting sued over OS X Lion fast boot
tekgoblin.com
tekgoblin.com
It wouldn't solve all of the problems of patents, but it would be an easy fix for getting rid of some of the more egregarious abuses of the patent system (companies filing thousands of pie-in-the-sky patents just so that others can't, patent trolls that exist just to buy patents and pursue actual innovators, companies filing patents and then sitting on them, preventing others from developing a new technology that would disrupt the company's product).
It would be a modest change to the system which would correct at least some of the current evident problems.
Lets say IBM is developing a very new technique. They file a patent but they discover the market is not ready for the actual product. So they decide to wait.
In this case IBM doesn't have an actual product available on the market. It would be nice if IBM could wait for lets say 5 years without loosing the patent.
"Patents exist to encourage innovation" Sometimes innovation is costing a lot of money and time (research and development). When you can make sure you can protect the outcome you are more likely to keep on innovating.