In this context we can exclude `trademark`. Also `copyright` is quite unlikely, too. So it's probably mostly patent impingement. And I think we all know how:

In this context we can exclude `trademark`. Also `copyright` is quite unlikely, too. So it's probably mostly patent impingement. And I think we all know how: - large cooperation infringe on patents of smaller ones without relevant consequences all the time - there is an endless number of complete absurd patents wrt. software. The patent system in context of software is fundamentally broken. - due to the US patent system being even more broken then the German one (was at the time the article refers to) the infringed patent might not even have been a valid patent. But what of this points apply to this specific case I don't know.