Epilogue: In December of 2017, Securus Technologies and Global Tel*Link reached a confidential settlement to end their long-running infringement dispute over patents used in prison phone systems, according to a joint motion for dismissal filed in Texas federal court. As detailed in depth below, the two rivals have for years engaged in litigation over their various patents, accusing each other of infringement and alleging that the other’s patents should be invalidated at the USPTO’s PTAB. […]