I will answer in English.
If a patent represents a substantial improvement, and if it is a new product, then that patent will protect the product and the generic will not be able to come to market until that new patent has expired. What we find with evergreening is that there are many patents on minor variations. For instance, it could be a different polymer or a different salt in the product, which does not change the product, does not in any way enhance the product. But these patents would have different expiry dates. The difficulty is that with the patented medicines regulations, the generic cannot come to market until it proves in court that it's not going to infringe on any of these patents.
The Supreme Court said that the patented medicines regulations were being abused, that irrelevant patents were going on the list and were delaying generic drug companies. The government said the same thing in October 2006. Terrific! Let's get rid of them. Health Canada was taking them off. The courts were taking them off. Terrific! Generics were able to come on the market when basic patents were expiring.
Now, again without consultation, the government is saying that brand name companies will be able to re-establish those patents on the patent list. And that's clearly going to delay the entry of generics, as the government has said itself. That is the difficulty we have with the evergreening patents.