The “monopoly” authorized by the Patent Act refers to the exclusionary power of individual patents. That is not the same thing as the acquisition of individual patent rights into portfolios that dominate a market, something that the Patent Act never justifies and that the antitrust laws...

A bundled discount occurs when a seller charges less for a bundle of goods than for its components when sold separately. A characteristic of such discounting is that a rival who makes only one of the products in the bundle may have to give a larger per item discount in order to compensate the...

A bundled discount occurs when a seller conditions a discount or rebate on the buyer's purchaser or two or more different products. Firms that produce fewer than all the good in the bundle find it difficult to compete because they must amortize the discount across a smaller range of goods. For...

A tying arrangement is a seller’s requirement that a customer may purchase its “tying” product only by taking its “tied” product. In a variable proportion tie the purchaser can vary the amount of the tied product. For example, a customer might purchase a single printer, but either a...

A price squeeze occurs when a vertically integrated firm "squeezes' a rival's margins between a high wholesale price for an essential input sold to the rival, and a low output price to consumers for whom the two firms compete. Price squeezes have been a recognized but controversial antitrust...

A patent "pool" is an arrangement under which patent holders in a common technology commit their patents to a single holder, who then licenses them out to the original patentees and perhaps also to outsiders. The payoffs include both revenue earned as a licensor, and technology acquired by pool...

Private antitrust litigation often involves a dominant firm being accused of exclusionary conduct by a smaller rival. In such cases, the defendant generally has a much larger financial stake in the outcome. We explore the implications of this asymmetry in a model of litigation with endogenous...