Before Invention

This Article is the first comprehensive historical account of a foundational doctrine of U.S. patent law: conception. Conception supplies the meaning of invention at the root of the patent system. It is a mental act, the formation of the idea of an invention before it is made. Considered “the touchstone of inventorship,” conception can determine who receives a patent, awarding credit and title, and governs employee inventions and federally funded research. Despite conception’s import, courts inconsistently state its doctrinal standard while insisting on its deep historical continuity, and scholars exclude it from studies of patent law’s practice, theory, and history. Carefully reading nearly two centuries of cases and treatises, the Article details the doctrine’s development, reveals its causes and tectonic effects on the patent system, and proposes a new test. Due to conception’s influence across other doctrines, the test transforms the meaning of invention holding aloft the system’s whole architecture.<br><br>The conventional wisdom is that the meaning of conception is well-settled, “unchanged for more than a century.” But this Article argues the doctrine has oscillated between a “mentalist” tradition, privileging a general idea in the mind at an early stage of the inventive process, and a “materialist” one, privileging a detailed idea formed amidst the physical work of experimentation. The doctrine developed in three phases, crafted in the nineteenth century with a mentalist theory equating conception with invention; turned materialist in the twentieth, breaking that equation; and, near the twenty-first, reverted to mentalism, albeit unsteadily. Heedless of these conflicting traditions, scholars and judges pick and choose among their divergent doctrinal standards. The result is a modern doctrine as convoluted as its history. Clarity requires understanding the development of the doctrine’s oscillating preferences for ideation and work.<br><br>The Article draws two takeaways from this history. First, conception has long provided the meaning of invention underwriting the patent system. This claim counters popular belief in patent law’s early materialism and recasts the modern system as the triumph of conception’s doctrinal development. Conception is thus not only temporally before making an invention, but also ontologically before the very notion of invention—the first principle of the entire edifice. This conclusion provides a basis for a foundational theory of invention that traverses the many doctrines shaped by conception’s doctrinal development.<br><br>Second, conception must be re<i>worked </i>to bring back the materialist turn, grounded in experimental labor. The mentalist tradition is flawed, designed to exclude that labor. The Article proposes a new test synthesizing elements from the materialist case law. While scholars have advocated materialist approaches to other doctrines, primarily related to inventorship and a patent application’s disclosure, those doctrines were largely shaped by conception’s development and should incorporate versions of the proposed conception test, harmonizing divergent theories of invention with their source. The test resolves controversies over federally funded research and artificial intelligence, and the thorny case law on disclosure, the basis of the modern system