Iconic puzzle game Rubik’s Cube lost a major trademark battle earlier today, when the European Court of Justice (ECJ) held that a trademark on the shape of Rubik’s Cube is invalid.

The court held that there was too much functionality in the shape of the puzzle game, “such as its rotating capability.”

The puzzle was invented in 1974 by Hungarian Ernő Rubik, who originally named it the Magic Cube. It was renamed Rubik’s Cube in 1980 and exported to the west. More than 350 million cubes have been sold since.