Gadgetorama has tried and failed to keep up with all the lawsuits that smartphone manufacturers have engaged in over the last few years. Just how tangled is the picture of suits and counter-suits is best expressed by this chart put together by Forbes.
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No one appears to be immune. From A (Amazon) to Z (ZTE), all the key players are there.
Sadly, it means that money that could go towards R&D and exciting new innovations is instead going to each company’s legal bills. Would it be too much to ask that companies compete on innovation rather than patents?