Buchanan Ingersoll & Rooney PC has more than 550 attorneys and government relations professionals practicing throughout the United States, with offices in Pittsburgh, Harrisburg, Philadelphia, Alexandria, New York, Washington, D.C., Miami, Tampa, Wilmington, Princeton, Newark, San Diego and Silicon Valley. In California, the firm is known as Buchanan Ingersoll & Rooney LLP.

Effective July 1, 2006, Buchanan Ingersoll PC and Klett Rooney Lieber & Schorling PC merged to form Buchanan Ingersoll & Rooney PC. The merger made the combined firm one of the 80 largest in the country. Buchanan has undergone a series of acquisitions and additions during the past two years, including the 55 attorneys and patent professionals of Burns, Doane, Swecker & Mathis.

Buchanan's attorneys have experience in industries that include entertainment and media, pharmaceuticals and biomedicine, nanotechnology, financial institutions, construction, franchise and real estate. Within these and other industries, Buchanan attorneys focus on more than 65 practice areas including Corporate Finance, Litigation, Intellectual Property, Tax, Government Relations, Health Care and Labor & Employment. The firm serves national and international clients that include Fortune 500 corporations, start-ups, technology companies and financial institutions.