I thought they've owned the trademark for 15+ years at this point? That's part of the reason why Jupiter, the main dev for Nintendo's picross games, can't use the name when they create a picross game for a non-Nintendo system
That's why they had to use the awkward Logiart name for the game they just published on Steam
That's why they had to use the awkward Logiart name for the game they just published on Steam