Unified Patents, Microsoft, the Linux Foundation, and Open Invention Network are beating back open-source patent trolls.

Patent trolls, aka Patent Assertion Entities (PAE)s, have plagued open-source software for ages. Over the years though, other groups have risen up to keep them from stealing from the companies and organizations that actually use patents' intellectual property (IP). One such group, Unified Patents, an international organization of over 200 businesses, has been winning for the last two years. This is their story to date.