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The use of a service is not an infringement of a patent if the service is provided by a person who, under subsection (1) or paragraph (2)(b), is able to provide it without infringing the patent.
The use of a service is not an infringement of a patent if the service is provided by a person who, under subsection (1) or paragraph (2)(b), is able to provide it without infringing the patent.
Section 56 of the Patent Act, as it read immediately before October 1, 1989, applies in respect of a purchase, construction or acquisition made before the day on which subsection (1) came into force of an invention for which a patent is issued before October 1, 1989 or is issued after October 1, 1989 on the basis of an application filed before October 1, 1989.