Omron Must Face Purdue U.'s Blood-Pressure Monitor Patent Claims

A Purdue University patent covering a method for an inflatable cuff blood pressure monitor to calculate systolic blood pressure wasn’t shown by Omron Corp. to be invalid, according to a Chicago federal court.

The patent’s use of a mathematical function didn’t mean it was directed to a patent-ineligible natural phenomenon, the U.S. District Court for the Northern District of Illinois said Nov. 4.

Purdue owns U.S. Patent No. 7,014,611, covering an oscillometric blood pressure monitor that reads systolic blood pressure by measuring maximum pressure oscillation amplitude and mean cuff pressure. It sued Omron in the U.S. District Court for the ...