So far this year, perennial top filer IP Edge LLC has remained firmly atop the NPE plaintiff heap, continuing to file myriad complaints, most of them at month-end, across many of its now 130+ litigation campaigns. Among its 2021 litigation activity have been eight new campaigns, asserting patents picked up from a variety of sources, including other NPEs (e.g., Empire Technology Development LLC, Mantis Messaging, Inc., Monterey Research, LLC), a sovereign patent fund (IP Bridge, Inc.), and operating companies (e.g., Kyocera); if recent assignment activity is any indication, May’s activity may include another source for litigated IP Edge patents: a university.