IANAL, but I belive that this decision (once it's fully adjudicated), can be introduced in litigation in other venues. I don't think it would carry the same weight as case law from their own jurisdiction, or, from the SCOTUS, but I believe that such things are regularly included in the arguments (i.e., thus and such a court in thus and such a jurisdiction said thus and such on a matter related to the one before this court).
Decisions from other jurisdictions are frequently cited in other jurisdictions in order to support the argument of one side or another.
How much weight they are given is another matter entirely.
L