Iowa and five other states asked a federal judge Sept. 11 to extend court oversight of Microsoft Corp.’s business practices for five more years.

The request comes as the antitrust settlement reached in 2002 between Microsoft, the federal government and 17 states is scheduled to expire Nov. 12. Microsoft has been under the supervision of the U.S. District Court for the District of Columbia for the past five years and has had to report regularly on its compliance with the settlement.