In AMP v. Myriad Genetics (Federal Circuit, July 29, 2011), the Federal Circuit addressed whether two types of claimed subject matter are patentable subject matter under 35 USC § 101. More particularly, the issues were whether composition claims drawn to “isolated” DNA molecules and method claims directed to “analyzing” or “comparing” DNA sequences are patentable.
With respect to the “isolated” DNA sequences, the court found a distinction between a product of nature and a human-made invention for purposes of § 101. The court maintained that there is a change in the claimed composition’s identity compared with what exists in nature. In the opinion authored by Judge Lourie, the Federal Circuit panel referenced the line drawn by the US Supreme Court between compositions that, even if combined or altered in a manner not found in nature, have similar characteristics as in nature, and compositions that human intervention has given “markedly different,” or “distinctive,” characteristics.
Applying this test to the isolated DNAs in this case, the Federal Circuit concludes that the challenged claims are drawn to patentable subject matter because the claims cover molecules that are markedly different—have a distinctive chemical identity and nature—from molecules that exist in nature. In this case, the Federal Circuit drew a distinction between “isolated” molecules and those which are merely purified. The Court concluded that “isolated” DNA has to be chemically cleaved from their chemical combination with other genetic materials. The court stated that when cleaved, an isolated DNA molecule is not a purified form of a natural material, but a distinct chemical entity. Attention was also drawn to the fact that some forms of isolated DNA require no purification at all, because DNAs can be chemically synthesized directly as isolated molecules.
With respect to the method claims, the court started with the machine-or-transformation test to assess whether the claims include transformative steps. Claims which recited only “comparing” or “analyzing” two gene sequences were considered to fall outside the scope of § 101 because they claim only abstract mental processes. However, where the claims included the step of “growing” transformed cells in the presence or absence of a potential cancer therapeutic, the presence of mental steps within the claim did not defeat the patent eligibility of the claims, because the steps involved physical manipulation of the cells and these steps were central to the purpose of the claimed process.
In summary, the Federal Circuit concluded that “isolated” the claimed DNA molecules were patentable subject matter under 35 USC § 101. In addition, they concluded that a method claim which contains solely mental “comparing” or “analyzing” steps do not contain patentable subject matter.
