“Until comparatively recently, intellectual property rights were viewed as entirely national in scope and effect … the courts here could not and would not try issues of validity and infringement of foreign intellectual property rights.” The recent developments that Laddie J was referring to have led to the High Court exercising a much expanded jurisdiction in cases of intellectual property infringements and international litigation. These developments mean that there is yet another reason why international litigants could be attracted to the English courts. However, they have also led to new battles for territory fought out across the North Sea.