Professor Pulsinelli at the University of Tennessee intellectual property law and Goblin Law have much in common. In the Muggle world, if you buy a car, you own it. For Goblins, the key question is "Who made the car?" If the answer is "Ragnuk the Goblin," you might be careful when lending your keys. Property rights for Goblins begin and end with the creator. A buyer of the object only has possessory rights that, at best, last for one's life.
For more insight into the legal complexities of the Goblin Law, check out "The Law & Harry Potter."