"One of the threats to FOSS are software patents, and especially patent trolls. These are a hindrance to putting open source into use. Therefore, some patent heavyweights founded the Open Invention Network at the end of 2005. As one can assume, they are not against software patents, tells Keith Bergelt, and in fact they try to stay away from the religious fight about software patents as much as possible. They manage a pool of patents meant to defend Linux if necessary. However, they can do more for FOSS. They will also provide one on one assistance to free software developers or users if they are being threatened by those exerting their patent rights against them. For example, they can talk to patent trolls to ensure them that they should stay away from FOSS and choose another victim. Those being threatened by entities are encouraged to report the attack to LinuxDefenders 911."