Sequenom gives update on patent status for methods of detecting fetal aneuploidy Sequenom announced that the U.S. Patent and Trademark Office has withdrawn the issuance of U.S. Patent No. 8,340,916. Sequenom has been informed by the Patent and Trademark Office that issuance was withdrawn in connection with an anticipated patent interference proceeding between parties with pending patent applications or issued patents directed to similar subject matter. Sequenom had previously been notified that the patent would issue on December 25, with claims to novel methods for detecting fetal aneuploidy using massively parallel sequencing. The patent is entitled Diagnosing Fetal Chromosomal Aneuploidy Using Massively Parallel Genomic Sequencing and was invented by Drs. Dennis Lo, Rossa Chiu and Alan Chan of the Chinese University of Hong Kong. Sequenom has exclusive rights to this patent.