Indefiniteness

November 23, 2018
trademark law

PAB Rejects Application: Ambiguous and Indefinite Claims are Unpatentable

PAB 1453 – The Patent Appeal Board found that Canadian Patent Application No. 2,612,950 for a “system and method for generating real-time indicators in a trading list or portfolio” was obvious, the claims did not define statutory subject matter and were indefinite.
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.