I was reading through Licenses for software while taking a break and I found something in Apache License v2.
Section 3.
..."If You institute patent litigation against any entity (including a cross-claim or counterclaim in a lawsuit) alleging that the Work or a Contribution incorporated within the Work constitutes direct or contributory patent infringement, then any patent licenses granted to You under this License for that Work shall terminate as of the date such litigation is filed."
Oh the harder they come, the harder they fall.