With Apples ongoing lawsuit with Cisco over the iPhone trademark, it seems Cisco has violated something themselves: the GPL (GNU General Public License) in their iPhone software.
It seems that Cisco used open-source software as part of their "iPhone" software and did not publish the source code for some of the components that used it. The WIP300 iPhone by Cisco is based on Linux and it seems that Cisco agreed to comply with the terms of the open-source GPL license in order to use the software for this product.
Read more: Cisco's iPhone violates GPL, expert says
