Indefiniteness

July 3, 2014

US Supreme Court Tightens the Standard for Definiteness of Patent Claims

Nautilus Inc v Biosig Instruments Inc, No 13-369, 572 US ____ (2014) - On the matter of interpreting the meaning of electrodes in a "spaced relationship with each other", the US Supreme Court held that a patent is invalid for indefiniteness if its claims, read in light of the specification and the prosecution history, fail to inform, with reasonable certainty, those skilled in the art about the scope of the invention and remanded the case to the Federal Circuit.