Supreme Court Decides Definiteness Standard for Patents

A patent must be “definite”:  it must particularly point out and distinctly claim the invention.  35 U.S.C. § 112 ¶ 2.  Otherwise, the patent is not valid.  35 U.S.C. § 282 ¶ 2(3).  On June 2, 2014, the Supreme Court in  Nautilus v. Biosig Instruments unanimously decided the appropriate standard for determining whether a patent claim is definite, rejecting the Federal Circuit’s standard. Biosig owns U.S. Patent No. 5,337,753 for an exercise heart-rate monitor of the kind on a cylindrical treadmill grip, where the user grips two sets of sensors, one with each hand.  Each set of sensors has two electrodes “in   Read More »

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