Despite their reputation for being quick, my opinion is that Nintendo does often take their time. Most of the things they take down do exist for months or years (and also follow the same format of a ROM hack that got a lot of attention so easy copy paste). My assumption is they’re just dotting their i’s and crossing their t’s and patent is just what they think they’ll have the best chance at winning.
The fine increases for every day they don’t comply.
The fine was issued last October, though I’m unsure if legal proceedings put a halt to the counter