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XDx files patent reexamination request

Molecular diagnostics company XDx has filed an Inter Partes Reexamination requesting the US Patent and Trademark Office to review certain claims of US patent assigned to Source MDx.

The patent purports to claim methods for creating an index of a subject’s biological state pertaining to inflammation. XDx’s request states that a combination of prior art references available before the this patent’s earliest priority date raise substantial new questions about the patentability of certain of the patent’s claims.