Isley Brothers Trademark Dispute: Rudolph Sues Ronald.

Rudolph Isley is suing his younger brother Ronald Isley over the rights to "The Isley Brothers" trademark, claiming Ronald applied and got approval for the trademark in his own name and is taking all the profits. Rudolph claims they've each had 50% ownership in the band since their brother O'Kelly died in 1986, but Ronald recently went rogue. Rudolph wants the court to declare the trademark is jointly owned by him and his brother and wants Ronald to cough up half of any money he's been making off their band's good name since getting the trademark.