So you have less of a risk than Google does?
I think so. European courts are generally (for the moment, at least) not too impressed by software patents, you'd have to have an iron clad one to make it stnad up in court here.
We don't have the equivalent of an 'eastern Texas district', where the courts are favorably impressed by anything that carries a patent office stamp.
In fact, a company called Acacia tried just that. When they found out the parent company was European they lost interest.