The world\'s largest software maker filed the lawsuits Friday in federal courts in Georgia, Illinois, Ohio, Colorado, South Carolina, New York and New Jersey. The lawsuits accuse the companies of selling illegal copies of its Windows operating system and Office business software. The lawsuits are the latest in Microsoft\'s increasingly aggressive steps to curb piracy of its two flagship products -- and cash cows -- Windows and Office. The company has begun widespread distribution of a program, called Windows Genuine Advantage, that checks whether users are running legitimate copies of Windows. And it scored a coup earlier this year when China agreed to crack down on piracy. Redmond-based Microsoft still rakes in billions of dollars in profits from Windows, but the market is growing more saturated.