Swedish courts would not honor such a ruling if it were to be, since it would be against European law (there are no software patents in Europe). Generally court decisions almost never have international validity (especially business related ones).
this is a civil lawsuit (x has to give money to y because he created a damage), not criminal.
If they deem the trial fair, whatever the underlaying law was, they will enforce the decision.
If the business is in Sweden, it would have to go to court in Sweden, would it not?
Does Sweden actually allow judges to have a look at a foreign decision and then just declare their ruling, no trial, nothing? I suspect not (eager to learn if otherwise)
I think there are international treaties for that, to avoid having a re-trial. They rubber-stamp the foreign decision, and it becomes national stuff (still talking about civil).