Book excerpt: Patent holders are increasingly making voluntary, public commitments to limit the enforcement and other exploitation of their patents. The best-known form of patent pledge is the so-called FRAND commitment, in which a patent holder commits to license patents to manufacturers of standardized products on terms that are “fair, reasonable and non-discriminatory.” Patent pledges have also been appearing in fields well beyond technical standard-setting, including open source software, green technology and the biosciences. This book explores the motivations, legal characteristics and policy goals of these increasingly popular private ordering tools.