duration of a patent

In addition, the duration of a patent must never be dependent on a product’s sales figures.

The duration of a patent is 20 years, beginning on the day following the invention patent application.

The grant and maximum duration of a patent of addition are dependent on that of the main patent.

The duration of a patent relating to an invention already patented abroad cannot exceed the life of the foreign patent (Ibid., Art. 17).

Industry Canada should evaluate whether the duration of a patent should be related to the specific subject matter; in the case of software, twenty years does not make much sense.