According to judgment No 458 of 2017 of the Court of Justice, soybean is a plant of vegetable origin and as such can not be marketed with the addition of a product of animal origin such as milk.
This also applies where denominations indicate the vegetable origin of the product in question.
This ruling also lays down many other rules that will come down for obvious consequence: for example, those who use vegetarian or vegan products will finally have clearer labels for more conscious consumption.