4. Jedi Mind technology

Jedi Mind was the name of a company manufacturing , among other products, wireless headsets, which apparently “detected brainwaves”, and allowed users to “control computer technology with their minds”. (We’ve got no idea whether or not the head-sets actually worked – it sounds as if the technology was probably still in a pretty rudimentary stage.)

Predictably enough, Lucasfilm weren’t all that happy about the company’s use of the trademarked term “Jedi” (LucasFilm has apparently also claimed ownership over "all characteristics associated with the Jedi knights not memorialised in a registered trademark ... [including] Jedi robes, the lightsaber weapon, the power to levitate objects, a telepathic oneness with other Jedi and the universe, and the ability to shoot energy beams called 'Force Lightning' from the fingertips.")

In 2009, the film company sent a cease and desist letter, asking Jedi Mind to refrain from using the name – and in 2010 they launched a lawsuit for damages of $5 million, claiming that claiming that the company had failed to comply.

Jedi Mind later agreed to change their named to Mind Technologies. The company no longer appears to have a website, while its Facebook page hasn’t been active since 2013.