A Third Circuit opinion concerning the proper operation of a corporate family's centralized in-house legal department, and delving into a variety of concepts related to the co-client (or joint-client) privilege, its exceptions, its scope, and a lawyer's ethical obligation. The Court explores the co-client (or joint-client) privilege, which applies when multiple clients hire the same counsel to represent them on a matter of common interest, and the community-of-interest (or common-interest) privilege, which comes into play when clients with separate attorneys share otherwise privileged information in order to coordinate their legal activities, as well as the adverse-litigation exception.