Nautilus Cries Fraud In Heart Rate Monitor Patent Spat

By Melissa Lipman ( March 4, 2009, 12:00 AM EST) -- Fitness equipment maker Nautilus Inc. has hit back in a long-running infringement suit by Biosig Instruments Inc., claiming the specialty exercise device manufacturer concealed prior art information about a heart monitor patent from the U.S. Patent and Trademark Office during prosecution....

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