> At the risk of sounding pedantic, it says they "filed legal action". They may have just filed for an injunction.

Which is a suit for equitable relief (now, your pedantry might be accurate if excessively pedantic if the claim was that they had filed a lawsuit, since a suit in equity is not a suit at law, but since it was just “suing”, which applies equally to a suit in equity, the pedantry is misplaced even with the possibility you point to.)