Introduction: Patent Trolls Targeting Bitcoin Mining

Bitcoin’s use of elliptic curve cryptography (ECC), which is essential for generating key pairs and validating digital signatures, has drawn the attention of a nonpracticing entity (NPE), more commonly known as a patent troll. In May 2025, Malikie Innovations Ltd., a troll that acquired thousands of patents from BlackBerry’s portfolio, filed lawsuits against major mining firms Core Scientific (CORZ) and Marathon Digital Holdings (MARA). (Some considered MARA an original patent troll itself and thus have expressed schadenfreude at the current attacks.) Malikie claims that routine Bitcoin operations (like verifying transactions…

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