Open Patent Non-Assertion (OPN) Pledge

See the following -

Google, Business, And Open-Source Patent Protection

Steven J. Vaughan-Nichols | ZDNet | March 29, 2013

Google has just pledged that it won't sue other companies over open-source patents if they don't sue Google first, but this is actually a long established policy. Now if it could only stop the patent wars. Read More »

Google: It's Time To Take Action Against Patent Trolls, Privateering

Rachel King | ZDNet | April 5, 2013

Google bands together with BlackBerry and Red Hat as it continues its offensive to defend itself against patent suits. Read More »