Additionally, Alexandria-based IP boutique Burns, Doane, Swecker & Mathis merged with Pittsburgh-based Buchanan, Ingersoll & Rooney in 2005, Cushman, Darby & Cushman was absorbed by national firm Pillsbury Winthrop Shaw Pittman (then Pillsbury, Madison & Sutro), Houston-based Arnold, White & Durkee merged with Howrey (then Howrey & Simon), and Los Angeles-based Lyon & Lyon dissolved in 2002.