Pretty obvious this was going to happen. Pretty much the only software that is patentable in Germany is stuff that controls physical machinery of sorts (embedded break controls or something). Control of forces of nature to cause an expected effect is what qualifies. "Technizität" (technical character) is what it's called. It's one of the four criteria. The other being it has to be "new" (no prior publications including your own), marketable (no clear cut criteria) and an invention (an "imaginary expert in the field" can't come up with it, also pretty debatable).
So technically not much really qualifies. [IANAL]