By a GenomeWeb staff reporter

NEW YORK (GenomeWeb News) – Sequenom has sued both Aria Diagnostics and Natera, accusing the companies of infringing a Sequenom patent with their respective noninvasive trisomy 21 and paternity tests.

In its complaint against Aria, filed with the US District Court for the Southern District of California, Sequenom alleges that Aria's prenatal trisomy test infringes its patent, US Patent No. 6,258,540, and that Aria's infringement has been "intentional, deliberate, and willful."

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