“… placed on the skilled person meant that the specification was insufficient. Jacob J gave an example in Milliken Denmark AS v Walk-Off Mats Limited and another [1996] FSR 292 at 301 of a property which was required to be measured in the non-existent “Pinocchio units”. That would give rise to uncertainty in the Kirin Amgen sense.…”
“…le to ascertain because it is described in meaningless terms (the famous example of Pinocchio units given by Jacob J in Milliken Denmark AS v Walk Off Mats Ltd [1996] FSR 292); or because the patent does not explain how to decide where the boundary is (as in Kirin Amgen itself). Patent lawyers have traditionally called this “ambigui…”