Def Jam Records

Even former cocaine kingpins have to worry about brand protection. Infamous drug lord Ricky "Freeway Rick" Ross is suing the rapper known as Rick Ross for alleged violations including trademark infringement and misappropriation, among others, for $50 million in damages.

Controversial rapper Nas has another battle to fight these days. In addition to a very public divorce with soon to be ex-Kelis, Nas has landed himself in hot water with the IRS. Nas, who has already been ordered to pay Kelis $44,000 per month in child and spousal support, plus attorney's fees and...