Biosig Instruments, Inc. v. Nautilus, Inc., No. 12-1289 (Fed. Cir. Apr. 26, 2013)

From the Opinion

The passage below is extracted verbatim from the opening of the document. It has not been editorially summarized — consult the full opinion for the court's complete reasoning.

Biosig Instruments, Inc. (“ Biosig”) is the assignee of U.S. Patent No. 5,337,753 ( “the ’753 patent”), which is directed to a heart rate monitor associated with an exer- cise apparatus and/or exercise procedures. Biosig brought a patent infringement action against Nautilus, Inc. (“Nautilus”) in district court alleging that Nautilus in- fringed claims 1 and 11 of the ’753 patent. After claim construction, Nautilus filed a motion for summary judg- ment seeking, in relevant port ion, to have the ’753 patent held invalid for indefiniteness.