You may have heard of patent fights between Samsung and Apple with ensuing delays in product launches, or even the recent Oracle vs Google patent fight.
Visual.ly has created an infographic about the rampant patent wars in the US Tech Industry which shows just how messy patent fights in US courts are. This must really be a boon for lawyers. The external ring of the chart shows the alliances or patent purchases between companies. The busiest companies on the patent war front seem to be Apple, ZTE and Microsoft. Google is by far the company who bought the most existing patents mainly from Motorola Mobility (17,000 patents) and IBM (2,094 patents).