The producer of the hit movie “Chicago” is suing Miramax, claiming the company is misrepresenting profits on the film. “The suit contends that while precise figures are not available, Richards believes the film has generated over $300 million in gross receipts for Miramax. He claims the financial statements he receives from Miramax are “omissive, false and misleading” because they understate revenue from video and DVD sales and foreign release, while overstating overhead.