Britney Spears' brother BRYAN is heading to court in a bid to seize control of the singer's businesses. Bryan Spears, 30, and attorney Ivan Taback were named co-trustees of Britney's trust fund after the Toxic star suffered a mental meltdown earlier this year (08). They want to ensure all Britney's businesses fall into their ownership as part of the co-trustee deal. The account already holds most of her financial assets but her companies' interests were not automatically transferred. Bryan and Taback are taking their challenge to Los Angeles Supreme Court on 17 April (08). If successful, Britney's SJB account will be the confirmed owner of such companies as Britney Brands Inc., Britney Films Ltd., Britney Online Inc., Britney Television LLC and Fairy Zone Productions. The co-trustees fear some of Britney's companies need urgent attention - in terms of unpaid tax bills, litigating matters and ongoing business requirements - insisting ownership must be established. Taback put an early stop to theories they are acting without Britney's authority. He wrote in a declaration included in last week's (17Mar08) filing: "Britney confirmed to me her desire that all of her material financial assets, including her right title and interest in and to all legal entities which she then owned, be transferred and vested in the trust." Britney was relieved of many financial and lifestyle duties after she was released from a psychiatric ward last month (Feb08) following a public breakdown, which included a stand-off with police after she refused to hand back her children, Sean Preston, two, and Jayden James, one, to their father Kevin Federline. She is currently under the supervision of two conservators - her father Jamie and lawyer Andrew Wallet.