435. Construction.

435.     Construction.

A specification1 is construed neither in favour of nor against the proprietor of the patent2. It should be so construed as not to lead to a foolish result or one which the proprietor could not have contemplated3; for example, the court will tend to avoid constructions which would make the claim4 cover what the specification admits to be old5 or is the negation of the whole point of the invention6.