Microsoft

Microsoft CEO Steve Ballmer, who succeeded founder Bill Gates as CEO, will retire within the next 12 months. The world's biggest software company did not name a successor, but one long-time Microsoft watcher says he expects the company to hire its next chief from within.

Microsoft Corp.'s stock rose more than 7 percent after the news. 

Just last month, Ballmer reorganized the company to emphasize hardware devices and services, rather than just software.

PORTLAND, Maine – A small technology company based in Portland, Maine, has filed a patent infringement lawsuit against Microsoft over elements included in Windows 8.