The company behind the Star Wars movies is trying to shut down a Lightsaber Academy operating in the US.
Lucasfilm has filed a law suit against a man called Michael Brown who they claim has been infringing trademarks by operating businesses called New York Jedi and the Lighstaber Academy.
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According to the complaint, Brown has "selling unauthorised Lightsaber classes which purport to teach students how to use Lightsabers and/or perform as Jedi".
Among other infringing activities, Lucasfilm claims that the Lightsaber Academy uses "a logo that is nearly identical, and confusingly similar, to Lucasfilm's trademark Jedi Order logo".