Square Enix previously filed a trademark for Rise of Mana in Europe, and now they’ve followed up with yet another trademark for Rise of Mana, only this time it’s in Japan.
As a point of reference, Square filed a trademark for Drag-On Dragoon 3 (Drakengard 3) before they revealed the game a few months later.
Hopefully this isn’t something like what they’re doing with Circle of Mana, a mobile game on GREE.