Securus Technologies Inc v. Global Tellink Corporation

Bryson, Circuit Judge.

I

Securus Technologies, Inc., owns patents relating to the delivery of communications services to correctional facilities. It has sued various entities for infringement of those patents. One of the entities Securus sued was Public Communications Services, Inc. (“PCS”). That suit ended in 2009 with a settlement that included Securus’s agreement not to sue “PCS or its affiliates” for “infringement of any Securus Patent” until September 18, 2014.

In 2010, Global Tel*Link Corporation (“GTL”) acquired PCS through a stock purchase, and PCS became a wholly owned subsidiary of…