I guess I should clarify. When we file a provisional patent application in the U.S., we're not saying we aren't going to file in Canada. It's just sort of a process mechanism to file in the U.S. first. It gives us 12 months to file a PCT. And then 18 months after that, we are able to say in which countries we will actually keep the patent alive. It's in that 18-month period, when you say that you're going to file in the U.S. only, or in the U.S. and Canada, or in the U.S. and Canada and Europe, that you choose whether it's going to stay in Canada.
Right now, we do file in Canada. I think some universities don't file in Canada. Part of the evaluation is that Canada is a much smaller market than the U.S. or other places. The other part, as Scott said, is that a lot of Canadian companies aren't here. The patent allows you to sort of prevent others from making, using, or selling. If companies aren't going to be making it or using it here, and you are selling it to the United States as a major market, it might not be of value to actually file a patent here and pay those patent costs here.