Biosig Instruments, Inc. v. Nautilus, Inc.

October 30, 2014 – Yesterday, Biosig and Nautilus argued their case yet again before the Federal Circuit on remand from the Supreme Court’s June 2014 decision that eased the standard for proving indefiniteness. The Biosig patent at issue covers its heart rate monitor used in exercise equipment that is able to cancel out interfering signals from other muscles, and is U.S. Patent No. 5,337,753, entitled “Heart Rate Monitor” and assigned to Biosig Instruments, Inc. (Montreal, Canada), which issued August 16, 1994. The case is pending in the Federal Circuit and is captioned Biosig Instruments, Inc. v. Nautilus, Inc. 2012-1289 (Fed. Cir.) (audio recording available at

By: Scott A. McMurry