You can't copyright ONE word, Bethesda, such as Scrolls. Even if the game was called Oblivion, you can't do anything.
Let me ask you Bethesda, how much did your Elder Scrolls series have to do with scrolls? It didn't have **** to do with scrolls, did it. Just swords and killing rats.
You're thinking fans will get "confused" with the Elder Scrolls, and Scrolls? No way, idiots. You know very well that everybody refers to your games as their subtitle, such as "Morrowind," "Oblivion," and "Skyrim."
Now, Skyrim is a unique, new word you made to define your game. If Mojang made a game called Skyrim, you can go ahead and sue their ass off. That's your word. Copyright that ****.
Now, let's turn the tables, Bethesda. Let's say Ubisoft sues you for using the word "Vegas" in "Fallout: New Vegas." Since Ubisoft first made "Rainbow Six Vegas," would that change ****? Of course not, you'd walk away and Ubisoft would be left humiliated.
Just because Mojang isn't a huge company and is pretty much "Indie" as of right now, you miiiiiiiiiiiiiiiiiiiight be able to squeeze a few bucks outta them, just because your a huge company, and your lawyers could probably kick Mojang's lawer's ass. But I doubt it.