Trend Micro could lose from corporate customers that buy Barracuda's kit. I can see why they wouldn't want that to happen.

Makes you wonder why the other AV companies haven't filed patent infringements. Either against Barracuda or each other. Maybe they don't mind infringement from each other as long as they don't cut out huge swaths of licensing revenue from each other.

Cheers,
John

The patent claim made by Trend Micro is not aimed at open source software particularly. It happens that Barracuda does use some open source code in its product, but the lawsuit would be exactly the same if all the code were proprietary.

The fact that Barracuda does use open source just makes it a little easier for them to ask the open source community for help uncovering prior art to fight the patent infringement claims. But those claims are not against the open source code.