What are the limitations of business ownership and protecting property?

Burger King, the national franchise, is banned from opening a restaurant within 20 miles of Mattoon, Illinois. So, there is not a Burger King there; no problem, right? Not so fast! In the late 1950s, Gene and Betty Hoots trademarked the iconic name. Well, they trademarked it in Illinois at least. When the national company decided to open a chain close by, the Hoots sued and won their case. However, the national chain was able to keep the name Burger King, but the Hoots were also able to keep the name in accordance with the stipulation that the national chain could not open a store within a 20-mile radius of the original store in Mattoon, Illinois.