Law Commons^™

Life After Bilski, Mark A. Lemley, Michael Risch, Ted Sichelman, R. Polk Wagner

All Faculty Scholarship

In Bilski v. Kappos, the Supreme Court declined calls to categorically exclude business methods—or any technology—from the patent law. It also rejected as the sole test of subject matter eligibility the Federal Circuit’s deeply-flawed machine-or-transformation test, under which no process is patentable unless it is tied to a particular machine or transforms an article to another state or thing. Subsequent developments threaten to undo that holding, however. Relying on the Court’s description of the Federal Circuit test as a “useful and important clue,” the U.S. Patent and Trademark Office, patent litigants, and district courts have all continued to rely on …