The Leahy-Smith America Invents Act effectively repealed aspects of the Federal Rules of Civil Procedure by creating a new statutory section governing joinder of accused infringers and consolidation of actions for trial in most patent infringement cases. This new law codifies a substantial barrier to joinder and consolidation for trial. In so doing, it frustrates the promotion of liberal standards both for evaluating the sufficiency of pleadings and for evaluating the propriety of joinder of parties—two of the primary policies embraced by the drafters of the Federal Rules of Civil Procedure. Remarkably, Congress adopted the new statutory section despite the absence of any detailed scholarly analysis prior to its enactment regarding these issues, sparse legislative history analyzing perceived problems with the relevant Federal Rules of Civil Procedure, and the lack of any consideration of the new statutory section by the Supreme Court’s Advisory Committee on Civil Rules. This Article provides a comprehensive analysis of the reasons for the enactment of the new statutory section, the competing policies animating the Leahy-Smith America Invents Act and the Federal Rules of Civil Procedure, and the appropriate interpretation and application of the new law. Such analyses have, to date, been absent from the legal conversation.