The following is a compilation of book reviews and notices of notable books I have prepared over the past three years as U.S. Book Review editor for the World Competition Law & Economics Review and for the web site for the Institute for Consumer Antitrust Studies at Loyola University Chicago....

A general definition of exclusionary conduct has become a sort of Holy Grail for antitrust scholars. At present, four proposed definitions appear most promising: (1) conduct that could exclude an equally efficient rival; (2) conduct that raises rivals' costs unjustifiably; (3) conduct that, on...

This paper presents an overview of what economists can say about vertical constraints by multi-sided platforms at this stage in the development of our knowledge about the economics of these businesses. It describes the general procompetitive and anticompetitive uses of vertical restraints by...

In this paper, we analyse the potential application to the cloud computing services sector of EU competition rules governing anti-competitive agreements and abuses of a dominant position. We argue that defining the relevant market for cloud services is a key threshold issue, with complex product...

“Free” products have exploded in popularity along with widespread Internet adoption—but many of them are not truly free. Customers often trade their attention or personal information to access zero-price products. This exchange dynamic brings zero-price markets within the scope of...

Current tying law uses a bifurcated rule of reason, condemning ties that involve either tying market power or a substantial tied foreclosure share, absent an offsetting procompetitive justification. Many critics of tying law advocate overruling the first branch, commonly called the quasi per se...

The collection of user data by providers of online services recently has become a popular topic in debates about the application of competition policy to online markets. At issue is whether the collection of large amounts of data — sometimes referred to as “big data” — in particular data...

Antitrust law has become dominated by economics. With its chief end the enhancement of economic welfare through the preservation of the competitive process, antitrust jurisprudence now seeks to follow consensus economic theory. Antitrust liability rules are thus based on prevailing economic...

For more than half a century, courts have viewed certain uses of intellectual property (IP) as misuse, rendering the IP unenforceable until the misuse is purged. The doctrine began with patents, but courts have recently extended it to copyrights. In most cases, it reflects concern over...

Brands and brand management have become a central feature of the modern economy and a staple of business theory and business practice. Contrary to the law’s conception of trademarks, brands are used to indicate far more than source and/or quality. This volume begins the process of broadening...