The Federal Circuit recently affirmed a Patent Trial and Appeal Board (Board) decision finding that Dr. Stephen Quake and Dr. Christina Fan’s (collectively, “Quake”) asserted claims were unpatentable for lack of written description under 35 U.S.C. § 112. See Quake v. Lo, Nos. 2018-1779, 2018-1780, 2018-1782, 2019 U.S. App. LEXIS 20407 (Fed. Cir. July 10, 2019) (Before Reyna, Chen, and Hughes, Circuit Judges) (Opinion for the Court, Chen, Circuit Judge). The claims were directed to a method for determining the presence of a chromosomal abnormality, called aneuploidy, in fetuses. Aneuploidy occurs when a fetus is born with either an abnormally high or low number of chromosomes. The claimed detection was accomplished using a method called massively parallel sequencing (MPS). Specifically, the claims recited a “random” MPS method, which amplified and sequenced all DNA in a sample rather than specific, targeted sequences of DNA. Quake, based out of Stanford University, and Dr. Dennis Lo (“Lo”) based out of Chinese University of Hong Kong began developing the claimed methods around the same time and requested interferences with respect to a number of applications to determine who invented the method first.

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