Andy Rubin has only just announced his much-anticipated new smartphone, but his company may already be in legal hot water over the infringement of intellectual property. It's been brought to our attention that Spigen, the US case and accessory maker, already has a trademark for the term "Essential" and has written to Rubin's organization to contest its use. The letter firmly compels Rubin's fledgling company to "cease and desist from any and all uses of marks including the term "Essential"."

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