This story was first published on Nov. 4.

By Justin Petrone

Illumina has filed a lawsuit against Affymetrix — its second in six months — alleging that a variety of its GeneChip products infringe a patent that was issued to Illumina last week.

The suit, filed in the US District Court for the Western District of Wisconsin, alleges that several Affymetrix products infringe US Patent No. 7,612,020, titled "Composite Arrays Utilizing Microspheres with a Hybridization Chamber."

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A settlement is expected in a Duke University lawsuit hinging on using falsified data to win grants, Retraction Watch and Science report.

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