The infamous Blackberry case brought new attention to so-called 'patent trolls' and began the general association of trolls with 'non-practicing' patent holders. This has had important legal consequences: Namely, patent holders have been denied injunctive relief because they did not practice the...

Abstract Payment cards have been a perennial source of debate among economists. That debate received additional fodder in 2010 with passage in the US of the Durbin Amendment, which targets debit card interchange fees. I assess the Durbin Amendment, testing the interchange fee cap it imposes...

Ever since the first general-purpose charge card debuted in the early 1950s, pundits have been predicting the "cashless society". Over fifty years later, we may finally be getting close to that vision. This study is the first to examine empirically the move toward a cashless society using a...

While the "cashless society" has not yet fully become a reality, payment choices by consumers and merchants have been moving the U.S. economy in that direction slowly and steadily over the past five decades. In this study, a companion paper to Garcia-Swartz (2006a) in this volume, we lay out the...

We address Allan Shampine's critiques of our study on the costs and benefits of payment instruments, and review the current state of the literature. We argue that a consensus seems to be emerging in which: (a) different payment instruments appear to be socially efficient at different transaction...

The infamous Blackberry case brought new attention to so-called 'patent trolls' and began the general association of trolls with 'non-practicing' patent holders. This has had important legal consequences: Namely, patent holders have been denied injunctive relief because they did not practice the...