http://www.wsgr.com/

Wilson Sonsini Goodrich & Rosati (WSGR) is a law firm in the United States that specializes in business, securities, and intellectual property law. The firm's Chairman, Larry Sonsini, is well known as an attorney and advisor to technology companies.

http://en.wikipedia.org/wiki/Wilson_Sonsini_Goodrich_%26_Rosati