A Method of Diagnostic Sample Preparation Is Held Valid Under Mayo/Myriad, but the Diagnostic Test Was Held InvalidNearly five years ago the U.S. Court of Appeals for the Federal Circuit (CAFC) decided the controversial case of Ariosa v. Sequenom. In Sequenom the invention was a radically new method of fetal genetic testing by amplifying free paternal DNA from the mother’s blood. This test has today largely replaced the previous method of

The Risk of Using “Consisting Essentially of” in Patent ClaimsThe legal meaning of the transition language “consisting essentially of” is well-established in Federal Circuit case law and is generally construed to mean that the composition or formulation (a) necessarily includes the listed ingredients and (b) is open to unlisted ingredients that do not materially affect the basic and novel properties of the composition.  Similarly,

Detecting Disease Is Not a “Tangible and Useful Result” Eligible for PatentingThe federal appeals court with jurisdiction over questions of patent law has consistently held that methods of diagnosing a disease or other biological condition violate the Supreme Court’s ban on patenting “natural phenomena.” A recent decision reaffirmed this position (in the veterinary sphere), and for the first time in many years clearly articulated the test