The Red Hot Chili Peppers’ logo is at the centre of an $11 million (£5.5 million) lawsuit after a clothing firm used the logo on a jacket without permission.Back-Lite owner Gary Shaffer is being sued by the band's official merchandising company Bravada International after a favour for a fan backfired.Bravada International bosses, who also own the rights to the logos of the Guns N' Roses and Led Zeppelin, claim Back-Lite caused "irreparable harm" to the band after adding the 'RHCP' moniker to the back of a jacket design.A fan requested the one-off job so she could wow friends at the Grammy Awards earlier this year and Shaffer reluctantly agreed to take care of it, agreeing not to charge the fan if she helped promote his company.However, the plan backfired and he’s now in big trouble for a one-off violation.Shaffer says, "They are claiming there is a possibility that I've made over a million dollars in profits on copyrighted merchandise, which is not true".Shaffer is seeking legal advice and considering a settlement with Bravada International bosses.