Ah, you mean all device and radio patents were left with Nokia? Sorry, can't seem to remember the details on a moments notice - but I think you are correct. Hence MS underwrote all of Nokia acquisitions as a complete loss eventually.

MS got licence to all NOKIA patents as well.

Oh well, why didn't they just gifted the whole company to Ballmer instead and maybe it would be "developers, developers" focused /s

They did, and the company exploded in their hands.

The shockwave lasted 2-3 milli-millennium, and was observed as far away as Seoul from Finland, but not Tokyo.