There are two aspects to the answer.
Let me start by saying that we've heard the same thing as you. There is concern on the subject. The first thing to clarify is that the changes to the TPP to grant an additional two years of protection for certain drugs, are the same changes contained in the agreement with the Europeans. So the TPP, as such, will not change our Canadian system.
That said, with respect to drug prices, it's difficult, at the present time, to estimate the result of these changes, because several factors must be taken into consideration. The variables can't really be known. For example, we can't identify the drug, determine the price of the generic equivalent, or know the other provincial and federal policies for establishing drug prices.
There are initiatives to adopt federal and provincial policies on the subject. All of that makes a difference.