It seems that fans waiting for the next new Atelier game won’t have to wait much longer. I say this because Koei Tecmo has filed a trademark in Europe for Atelier Sophie ~ The Alchemist of the Mysterious Book ~ which obviously relates to the most recently released game in Japan, Atelier Sophie, which was released for the PlayStation 4, PlayStation 3, and PS Vita back on November 19th.
The trademark included the above logo which is another real good hint thanks to the silhouette matching the main character, though it is worth noting that at the moment Koei Tecmo has not officially announced the game’s release in the West