LOT is the non-profit community of companies providing the cure for patent assertion entities (PAEs), aka “patent trolls” - please see our website here. As you may know, 81% of the patents that trolls use to sue companies originate from operating companies. LOT members sign the exact same 10 page agreement that provides the fellow members with a free license (immunization) should a troll acquire a patent from a network member. At the same time, LOT members are free to use their patents for all the traditional uses: e.g. assert their patents against other members, cross-licensing, selling their patents, etc.
LOT has grown tremendously, and now has 176 members including most recently Oracle, Covestro, Seagate, Volkswagen, Cisco, Daimler, Alibaba, and about 60 start-up companies (full list here). This is in addition to existing members like SAP, Google, Amazon, Netflix, JP Morgan Chase, etc.