Patent trolls are an interesting phenomenon.
Again, in line with the comments I made earlier, depending on the jurisdiction, depending on the IP regime you're dealing with, there will be a different set of constraints, a different set of rules. Companies such as patent trolls will often look at these rules to try to use them to their advantage. Canada, just like any other jurisdiction, has to be cognizant of that.
A strong IP regime is perfectly fine. It is something a lot of stakeholders look for, but it has to have the right checks and balances.