So they say they are the legal owners of the super Mario run trademark and then it's solved. You had me intrigued for a second, thought it was a case like the iPad mini not being trademarked because mini is merely an added descriptive word of the already trademarked iPad.
Correct. As I said, this is nothing major and I brought it up merely as an example of the inefficiency of some USPTO protocols/systems. Nintendo has experienced similar scenarios with some Pokémon trademarks and The Pokémon Company.
Wouldn't surprise me if this was some kind of automated response, to finding similar trademarks from technically different companies. I would hope that if a human had actually looked at the filings, they would have approved it.
It'll get sorted soon enough, but it is pretty stupid.