Asking how much it costs to get a patent in Canada is a bit like asking how long a piece of string is. The answer, of course, depends on many different factors, but there are a number of general guidelines that can be used to anticipate likely costs that will be incurred over the lifetime of a patent.
Under the doctrine of overbreadth (also referred to as "claims broader than the invention" and "covetous claiming"), a patent is invalid if its claims extend beyond the invention. While seemingly a straightforward idea, there is a lack of clarity for how such an allegation of invalidity is approached by the Court.
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