To print this article, all you need is to be registered or login on Mondaq.com. The extent to which certain apportionment principles, such as the entire market value rule and related doctrines, may constrain damages theories in patent infringement cases remains uncertain. This article reviews the current state of apportionment law through the lens of semiconductors and electronic components-ideal archetypes for such issues-and proposes a framework to help reconcile governing precedents that, at times, seem to conflict. Introduction We often define the state of human civilization by the materials we use to make tools-the Stone Age, Bronze Age, Iron Age, and so