Software patents are broken and patent trolls are seriously hurting innovation. Companies are spending more money on buying patents to launch offensive strikes against other companies instead of competing by building great products. There are numerous patent horror stories I could outline where they are being used for all purposes except to innovate. In fact the software patent system as it stands today has nothing to do with innovation at all. This is the sad side of the Silicon Valley. While most people are whining about how software patent trolls are killing innovation some are trying to find creative ways to fix the problems. This is why it was refreshing to see Twitter announcing their policy on patents , Innovator's Patent Agreement, informally called IPA. As per IPA, patents can only be used in an offensive litigation if the employees who were granted the patents consent to it. I have no legal expertise to comment on how well IPA itself might hold up in a patent litigation