Ambiguous Patent Claims
Patents have a reputation of being difficult to read and understand and a key part of most patent litigation proceedings is ‘construing’ or providing meaning to the claims of the patent. A recent decision of the Federal Court considered a series of claims which it determined were not possible to be understood – the claims were ambiguous. As a result, the claims were declared invalid.
Declaring claims invalid for being ambiguous is rarely done in Canada. Various decisions have held over the years that claims are invalid for being ambiguous only if it is not possible to give the claim . . . [more]


