We use unique data sets with round-the-clock posted fares and a regression discontinuity design to identify price discrimination in advance-purchase discounts. Price discrimination increases fares by 14% between two and one week before departure, and by 7.6% between three and two weeks to...

Kodak and Xerox are two recent, celebrated, and conflicting antitrust decisions. Both cases involve defendant firms that owned intellectual property and that refused to deal with independent service organizations. The most likely explanation for these refusals to deal was that both defendants...