In Bilski v. Kappos, the Supreme Court declined calls to categoricallyexclude business methods - or any technology - from the patent law. It alsorejected as the sole test of subject matter eligibility the FederalCircuit’s deeply-flawed "machine or transformation" test, under which noprocess is patentable unless it is tied to a particular machine ortransforms an article to another state or thing. Subsequent developmentsthreaten to undo that holding, however. Relying on the Court’s descriptionof the Federal Circuit test as a "useful and important clue', the U.S.Patent and Trademark Office, patent litigants, and district courts have allcontinued to rely on the machine-or-transformation test in the wake ofBilski: no longer as the sole rule, but as a presumptive starting pointthat threatens to effectively become mandatory. In this Article, we suggesta new way to understand the exclusion of abstract ideas from patentablesubject matter. No class of invention is inherently too abstract forpatenting. Rather, the rule against patenting abstract ideas is an effortto prevent inventors from claiming their ideas too broadly. By requiringthat patent claims be limited to a specific set of practical applicationsof an idea, the abstract ideas doctrine both makes the scope of theresulting patent clearer and leaves room for subsequent inventors toimprove upon - and patent new applications of - the same basic principle.Recasting the abstract ideas doctrine as an overclaiming test eliminatesthe constraints of the artificial machine-or-transformation test, as wellas the pointless effort to fit inventions into permissible or impermissiblecategories. It also helps understand some otherwise-inexplicabledistinctions in the case law. Testing for overclaiming allows courts tofocus on what really matters: whether the scope of the patentee's claimsare commensurate with the invention’s practical, real-world contribution.This inquiry, we suggest, is the touchstone of the abstract ideas analysis,and the way out of the post-Bilski confusion.
Why Leibniz should have agreed with Berkeley about abstract ideas
