Teva Canada Ltd. v. Pfizer Canada Inc.[1] is interesting because Teva alleged that Pfizer broke that bargain in their Viagra patent.
The SCC sided with Teva, and in the news at the time it was reported that the patent was now invalid. However the SCC filed a clarification saying that they didn't rule the patent invalid, just that Pfizer's order against Teva producing a generic version was dismissed.
The SCC sided with Teva, and in the news at the time it was reported that the patent was now invalid. However the SCC filed a clarification saying that they didn't rule the patent invalid, just that Pfizer's order against Teva producing a generic version was dismissed.
[1] http://en.wikipedia.org/wiki/Teva_Canada_Ltd._v._Pfizer_Cana....