CareDx Hit With Infringement Suits Over DNA Test Patents (1)

Natera Inc., a maker of DNA analysis tests, sued competitor CareDx Inc. for violating two of its patents covering technology for assessing the likelihood of an organ transplant rejection, deepening a yearslong intellectual property dispute between the two rivals.

According to a pair of suits filed Friday in the federal District of Delaware, CareDx treads on US Patent Nos. 10,655,180 and 11,111,544—which cover DNA sample preparation and comparison used in what are called cell-free DNA, or cfDNA, tests. The allegedly infringing methods show up in transplant tests AlloSure, AlloSeq, KidneyCare, HeartCare, and “any other CareDx products that use similar ...