	Background

Section 103(a) of the Patent Act provides one of the statutory bars for patentability of inventions: a patent claim will be considered invalid if "the differences between the subject matter sought to be patented and the prior art are such that the subject matter as a whole would have been obvious at the time the invention was made to a person having ordinary skill in the art to which said subject matter pertains." In the landmark 1966 case Graham v. John Deere Co . of Kansas City, the Supreme Court established an analytic framework for courts to determine "nonobviousness." Against this background, the obviousness or nonobviousness of the subject matter is determined. In such a situation, the U.S. Court of Appeals for the Federal Circuit (Federal Circuit) had developed an approach in which an invention would be considered obvious only if there was an explicit or implicit "teaching, suggestion, or motivation" that would lead a person of ordinary skill to combine multiple prior art references to produce an invention. KSR International Co. also manufactures an adjustable pedal assembly. On April 30, 2007, the Court unanimously reversed the Federal Circuit's judgment, holding that the TSM test for obviousness was incompatible with § 103 and Supreme Court precedents. In addition, he believed that the TSM test hindered the ability of courts and patent examiners to rely upon "common sense."
The Patent Act provides protection for processes, machines, manufactures, and compositions of matter that are useful, novel, and nonobvious. Of these three statutory requirements, the nonobviousness of an invention is often the most difficult to establish. To help courts and patent examiners make the determination, the U.S. Court of Appeals for the Federal Circuit developed a test called "teaching, suggestion, or motivation" (TSM). This test provided that a patent claim is only proved obvious if the prior art, the nature of the problem to be solved, or the knowledge of those skilled in the art, reveals some motivation or suggestion to combine the prior art teachings. In KSR International Co. v. Teleflex Inc. (550 U.S. ___ , No. 04-1350, decided April 30, 2007), the U.S. Supreme Court held that the TSM test, if it is applied by district courts and patent examiners as the sole means to determine the obviousness of an invention, is contrary to Section 103 of the Patent Act and to Supreme Court precedents that call for an expansive and flexible inquiry, including Graham v. John Deere Co. of Kansas City, 383 U.S. 1 (1966).