MADISON, Wis. AP – An appeals court is ordering Microsoft Corp. to pay $5.6 million to a national law firm involved in a Wisconsin antitrust case against the software giant.

Zelle, Hofmann, Voelbel & Mason LLP represented consumers who bought Microsoft equipment in Wisconsin. A 2007 settlement required Microsoft to give customers vouchers up to $23 plus millions in technology reimbursements for public schools.