Currently they are recognized in just a few countries, including the US and Japan. Ironically there is a good chance that the court decision which started the software patent mess in the US has recently been reinterpreted, potentially invalidating nearly all of them.
Along with business processes, software has been the most controversial patent subject matter for several years. It's also behind much of the current smartphone patent war. If you own a phone with a touch screen, but not multi-touch, you can thank a software patent for it.
Other notable software patents include Amazon.com's infamous one-click patent for e-commerce websites and Netflix's patent on their queue system.
Written by: Rich Fiscus @ 1 Apr 2010 2:59