Trend Micro has been trying to get Barracuda to either pay license royalties for including ClamAV or stop using ClamAV in its products. Barracuda, however, is an Open Invention Network licensee, and it decided to stand up and defend ClamAV against what it views as a bogus claim. Barracuda believes the patent is questionable, at best, and believes there is prior art to be found, so it decided to defend ClamAV on behalf of the community, and it asks for our help in finding prior art. Here's the specific Barracuda request for prior art.

See more about what could be a bloody patent fight at groklaw.