Remember that mysterious screenshot of a 3D Lucario and Blazaken about to duke it out? Then Nintendo America trademarked both Pokken Fighters and Pokken Tournament, which further exacerbated rumors. Now it seems that Nintendo Europe has joined in the trademarking party, as they registered those titles as well:

Pokken Fighters

Pokken Fighters

It remains to be seen when (if at all) this title will be officially announced. Meanwhile, we'll keep you posted on the progress of this story.