That one is the ultimate horror story what happens when you get stupid lawyers involved. Short summary: Guy named Uzi Nissan registers and uses www.nissan.com. Nissan car company wants the URL. Lawyers get involved. Judge decides that nobody can use it.
Between reasonable people without lawyers the outcome would have been that Uzi Nissan would have received a generous amount of cash, perhaps a new car made by guess what company, and Nissan car company had used the URL. Instead, everyone lost, except possibly Nissan's lawyers who declared this a victory for Nissan (which obviously it isn't).