Does an Exclusive-Dealing Agreement Violate the Antitrust Laws?

Sometimes parties will enter a contract whereby one agrees to buy (or supply) all of its needs (or product) to the other. For example, maybe a supplier and retailer agree that only the supplier’s product will be sold in the retailer’s stores? This usually isn’t free as the supplier will offer something—better services, better prices, etc.—to obtain the exclusivity.

If you compete with the party that receives the benefit of the exclusive deal, this sort of contract can seem quite aggravating. After all, you have a great product, you offer a competitive price, and you know that your service is better. Then why is the retailer only buying from your competitor? Shouldn’t you deserve at least a chance? Isn’t that what the antitrust laws are for?