Britney Spears' alleged attorney who claims to represent the troubled pop star in the battle over her legal affairs vowed to keep fighting for her one day after a federal judge ruled he is not the singer's lawyer, media reported today.

Attorney Jon Eardley claimed he was hired by Spears on February 12, but a California court had previously appointed conservators to control her personal and business affairs and another attorney to represent Spears.

District Judge Philip Gutierrez on Tuesday ruled the state court's appointment of the attorney prevented Eardley from acting as Spears' lawyer.

Eardley claimed that the conservatorship appointed by the California court has been a violation of her civil rights.

Spears was hospitalized twice in January for psychiatric evaluation, and the California state court's ruling occurred while she was not in court.

Eardley also argued that her conservators were not acting in her interest.

"We have only just begun the fight," Eardley told the media. "There is nothing that will stop me from dismantling, if necessary, this oppressive and unjust conservatorship."

Eardley had also tried to get Spears' case moved to federal court, but Judge Gutierrez ruled to keep the case in state court because Eardley had no authority to try and move it in the first place.

"Mr. Eardley had no authority to remove the case from state court. He is neither a party nor a defendant," Gutierrez said.

The conservatorship will remain in effect through March 10, when there will be another scheduled hearing.

The 26-year-old pop singer has spiraled downwards since her divorce last year from her ex-husband Kevin Federline. She has lost custody and visitation rights to their two sons.

Her bizarre antics includes shaving her head bald, attacking a car with an umbrella and bringing along a paparazzo pal on trips to a courthouse in her child custody case.