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The dramatic rise in lawsuits brought by non-practicing entities (NPEs) — sometimes pejoratively called patent trolls — in the past few years has spurred systemic changes to the patent law system. From Congress to state legislatures, from the Supreme Court to district courts, the various changes are making an impact on the way patent lawsuits are litigated. But what impact has this had on NPE lawsuits? Are the companies that provide real goods and services more insulated from attacks by NPEs as a result of these systemic changes? Are more changes needed and what does the future hold?