When Usher won primary custody of his two sons with ex-wife Tameka Raymond last month, many thought their bitter war was over. But after the judge ruled in Usher’s favor, Tameka filed papers asking for a new trial. Now, Usher is fighting back, saying her claims are bogus and filing his own paperwork asking that her request be denied, reports TMZ.

Tameka claims that the judge in their original custody case was biased because he received campaign contributions from Usher’s lawyer in the past. Usher’s team is now claiming if Tameka’s wishes for a new trial are granted, all trials where a lawyer contributed to a judge’s campaign should be reversed. He’s also attacking her character in his most recent filing, saying the motion “constitutes a continuum of [Tameka’s] vile and unsupported claims that every person who dared testify against her… is biased and tainted.”

Usher and Tameka were married in August of 2007. He filed for divorce in June of 2009 citing irreconcilable differences. At present time, Usher has primary custody of their two sons, Usher Raymond V, 4, and Naviyd Ely Raymond, 3, and both he and Tameka have legal custody.

No news yet on when they are expected to return to court.