A pro-Microsoft lobbying group filed a proposal on Tuesday in Washington, D.C., calling on U.S. District Judge Thomas Penfield Jackson to reject the government’s suggestion that he break up Microsoft in order to “remedy” the software giant’s multiple violations of federal and state antitrust law.

The Association for Competitive Technology (ACT) said the government’s April 28 proposal to split Microsoft into an operating-systems company and a software-applications company would harm both consumers and other software developers “as much or more than Microsoft.” The group urged Jackson to seek testimony from software developers before making his final ruling.