I have been trading this stock for over 2 years. I think most of these earning reports are not surprising at all. Most of them are just rehashing the old news. On the other hand, there was not any negative surprises either.
So, since there is no announcement of any sales since the 3rd quarter last year, which they did not plan to release anyway, I suspect there won't be any significant sales in EU.
However, if they did manage to sell some, even in a few million dollars range, then the stock will explode. In reality, I think their sales will be close to nil in EU. After that announcement, the share price would drop quite a bit before speculative money coming in again to pump it up.
I would not buy before conference call. May buy after. It is wise to sell a portion of your positions before earnings to book profit if you have any.