I don't believe Nokia suing Qualcomm had anything to do with the demise of their mobile devices unit. You'll also be hard pressed to find any analysis of the Nokia meltdown that would suggest this, though I'm happy to be proven wrong.

The article you've linked also notes that Qualcomm and Nokia already had a prior agreement, but once it expired couldn't agree and ended up in court. That's not what is going on between Apple and Qualcomm.