A federal appeals court has denied the government's request to suspend a lawsuit challenging the military's ban on openly gay servicemembers.

The 9th U.S. Circuit Court of Appeals in San Francisco issued an order Friday requiring the Department of Justice to file papers by Feb. 25 arguing why the court should overturn a Southern California trial judge who declared the "don't ask, don't tell" policy unconstitutional.

Government lawyers asked the 9th Circuit earlier this month to set aside the case because the Pentagon was moving quickly to satisfy the steps Congress outlined last month when it voted to allow the ban's repeal. A Justice Department spokeswoman said it had no comment Saturday.

The appeals court did not explain in its order why it rejected the request. In his State of the Union address, President Barack Obama said he expected to finalize the repeal and allow openly gay Americans to join the armed forces before the end of the year.

On Friday, the vice chairman of the Joint Chiefs of Staff told reporters that the training of officers and troops the Pentagon has said is a predicate to full repeal would begin in February.