Sam Lutfi, Britney Spears' former confidante and self-professed manager, had sued the singer's parents, claiming he was owed hundreds of thousands of dollars.
But Los Angeles Superior Court Judge Suzanne Bruguera ruled that Lutfi's attorney had not proven any of his claims of libel and breach of contract, and granted dismissal motions.
"I really thought long and hard," Bruguera said. "It's the right thing to do, so I'm going to do it."
Lutfi showed little reaction to the news and left promising an appeal.
The case centered on events before the singer's public meltdown more than four years ago. Lutfi had sued Lynne Spears for libel. He claimed he faced death threats from Spears fans after alleged defamatory statements were published in a book written by Lynne Spears.
Lutfi sued the singer's father, Jamie, for allegedly hitting him at the singer's mansion in an incident shortly before Jamie Spears and others were granted control over the singer's life. Lutfi also had claimed he was owed a 15-percent share of the singer's earnings.
But Bruguera agreed with the defense attorneys that there was insufficient evidence as to all causes of action Lutfi alleged: Lutfi failed to show he had a binding management agreement that would have entitled him to a share of the singer's profits, failed to show that what Lynne Spears published was false and failed to show evidence that Jamie Spears hit him.
The Associated Press contributed to this report.
