This Harvard Journal of Law & Technology digest argues that the Federal Circuit should adopt USPTO’s subject‑matter guidance to resolve the nagging inconsistencies from Alice in determining abstract‑idea patent eligibility under 35 U.S.C. § 101. It explains how courts currently struggle with a unified test—highlighting the fragmented judicial analyses and urging systematic classification of abstract‑idea categories at Step One . By leaning on PTO guidance for “groupings of subject matter” and “practical application” tests, the piece shows how the Federal Circuit could enhance predictability in § 101 decisions. IP practitioners and patent litigators will find this argument compelling and practical—it offers a clear pathway to untangle abstract‑idea ambiguity and fortify drafting and litigation strategies.