November 2001 - Microsoft reaches a settlement with the Justice Department in the antitrust case. Nine states agree to the settlement but nine other states and the District of Columbia consider the imposed sanctions too lenient.
November 2002 - U.S. District Court Judge Colleen Kollar-Kotelly approves most of the proposed settlement between Microsoft and the Justice Department, ruling against the dissenting nine states and the District of Columbia.
March 2, 2005 - Knighted by Queen Elizabeth II.
December 18, 2005 - Named Time Magazine's "Person of the Year" along with his wife Melinda and musician Bono.
June 15, 2006 - Announces that he will be giving up his daily role at Microsoft effective July 2008, to concentrate on his humanitarian and educational interests.
June 7, 2007 - Delivers the commencement address at Harvard University, the school he dropped out of in 1975. He also receives an honorary degree.
March 2008 - Falls to number three on the Forbes' list of billionaires, after a 12-year run at the top of list.
June 27, 2008 - Gates retires from day-to-day work at Microsoft to concentrate on philanthropy.
April 1, 2009 - Gates announces a partnership with the Chinese Ministry of Health to help fight an epidemic of tuberculosis in China, supported by a $33 million grant provided by the Bill & Melinda Gates Foundation.
January 29, 2010 - Gates Foundation announces it will donate $10 billion for vaccine research over the next ten years.
March 10, 2011 - Remains ranked at number two on the Forbes World's Billionaires List with a net worth of $56 billion.
March 2012 - Ranked number one on Forbes' list of the richest Americans with a net worth of $61 billion, about 50% of his net worth in 1987.
March 2013 - Ranked number two on Forbes' list of the world's billionaires with a net worth of $67 billion.