Fed. Circ. Allows For Some Ambiguity In Patent Claims

Law360, New York (April 26, 2013, 5:00 PM ET) -- The Federal Circuit ruled Friday that a Biosig Instruments Inc. patent for a heart rate monitor attached to exercise equipment was not overly nonspecific, declaring that patent claims can be ambiguous and open to interpretation to a point and still retain their validity, in a precedential decision reviving Biosig's infringement suit against Nautilus Inc.

The trial court had ruled that one of the limitations in Biosig's patent — covering a device that can give a reading on a person's heart rate while on a stationary bike,...
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