AP - Yahoo Inc. may have to defend its response to Microsoft Corp.'s takeover attempt in a trial that could sway the outcome of the Internet pioneer's August showdown with investor activist Carl Icahn.

Reuters - Four developing countries have appealed against the adoption of Microsoft's Office Open XML document format as an international standard, the International Organisation for Standardisation said on Monday.

AP - Antagonistic investor Carl Icahn became a billionaire by bullying already distressed companies, but his harassment of Yahoo Inc. could leave him with a black eye — and a hole in his wallet — if he's wrong about Microsoft Corp.'s desire to buy the Internet pioneer.

Reuters - Microsoft Corp and Kaiser Permanente, the biggest U.S. health maintenance organization (HMO), are working on a patient information exchange pilot program to help give patients more control over their health records, The Wall Street Journal said on Monday.