Assuming you are referring to the name Oreo read this. https://android.stackexchange.com/q/181818

EDTI: Fixed so they didn't pay as stated above but I guess it is technically still licensed.

If it's anything like the KitKat situation, no money exchanged hands, but both companies used it as a cross branding deal.

My understanding was you can use a trademarked name but only if it was in an unrelated category. Clearly no one will confuse a phone running Oreo with a cookie you eat and dip in milk. now if google made a cookie and called it oreo, they would get sued. But IANAL and am probably totally wrong here.