Anyone who watches Survivor or Game of Thrones knows that alliances are critical. And while they may be necessary to endure from one day to the next, alliances are inevitably broken.

Co-defendants in antitrust cases can draw lessons from these shows. Like alliances, joint defense agreements (“JDA” or “JDAs”) help facilitate defendants’ common interests. JDAs create efficiencies and cost savings by “present[ing] a pooling of resources, a healthy exchange of vital information, a united front against a common litigious foe, and the marshaling of legal talent and advice.” Lugosch v. Congel. Under the right circumstances, JDAs also serve the vital purpose of allowing defendants to realize those benefits without waiving privilege. Id.