Rubik's Cube shape is not a trademark, EU rules

The 3D brainteaser invented in 1974 by Hungarian Erno Rubik is popular among young and old, with more than 350m cubes sold worldwide

Why Rubik's Cube lost the 3D Trademark in Europe-1

Rubik's Cube shape not a trademark, rules top EU court - BBC News

How does the Rubik's cube trademark/copyright/patent work? - Quora

Rubik's Cube loses court bid for EU trademark protection

Patent of the Week: Spatial Logical Toy (Rubik's Cube)

Rubik's Cube shape is not a trademark, EU rules

EUIPO - European Union Intellectual Property Office on LinkedIn

Intellectual Property Law Blog

THE RUBIK'S CUBE SHAPE TRADEMARK DECLARED INVALID

Rubik's Cube Owners Lose as EU Trademark Fight Takes New Twist

Rubik's Cube - Wikipedia