BALTIMORE-Microsoft Corp. won some and lost some on Friday in its efforts to get a federal judge to dismiss antitrust lawsuits filed by Sun Microsystems Inc., Be Inc. and Burst.com Inc.

U.S. District Court Judge J. Frederick Motz denied Microsoft's motions in the Be and Burst.com cases in a hearing this morning. But this afternoon, Motz granted requests to dismiss some of the counts raised by Sun, while taking others under review.

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