Mario Rosati has been with Wilson Sonsini Goodrich & Rosati since 1971, first as an associate and, since 1975, as a partner. Mario specializes in corporate law, especially as it relates to technology companies. He serves as the managing partner of WS Investments, an investment partnership composed of the partners and associates of the firm. WS Investments has invested in a number of emerging corporations over the years. Mario has been an adjunct professor at the University of California at Berkeley's Haas School of Business, and a guest lecturer at the UC Berkeley School of Law (Boalt Hall), where he taught new venture finance. Mario has sat as a judge pro-tem in the San Mateo County Superior Court. He also participated in the Innovation and Entrepreneurship Task Force to the office of the President Elect, Ronald Reagan. Mario sits on the board of directors of two publically traded companies and a number of privately held companies.