NEW YORK (AP) -- Ozzy Osbourne has accused former Black Sabbath band mate Tony Iommi (eye-OH'-mee) in a New York City court of taking over the heavy metal titans' name and costing him royalties from merchandise sales.

Osbourne sued the guitarist earlier this week and issued a statement Friday imploring him to "do the right thing."

Osbourne filed suit Tuesday in a federal court in New York. The suit says Iommi falsely claimed to have sole rights to Black Sabbath's trademark in recent negotiations with a company that sells the band's merchandise.

Lawyers who have represented Iommi haven't responded to telephone and e-mail messages seeking comment. But Iommi noted in a separate lawsuit against the merchandise firm that he's been the only constant member in the 40-year history of the band, known for such hits as "Iron Man."