Nokia's patents are hardware patents, actual inventions related to wireless.
In other words, a light bulb is genuinely patentable but some software code which does (for example only) if(switch=on)light=true shouldn't be patentable and much less enforceable.
"Look! We believe in our patents so much, that we're going after other companies that infringe, too!"
If it also has a deleterious effect on Android adoption, so much the better, right?