Duane Morris LLP is a law firm

Law firm

A law firm is a business entity formed by one or more lawyers to engage in the practice of law. The primary service rendered by a law firm is to advise clients about their legal rights and responsibilities, and to represent clients in civil or criminal cases, business transactions, and other...

 headquartered in Philadelphia, Pennsylvania

Philadelphia, Pennsylvania

Philadelphia is the largest city in the Commonwealth of Pennsylvania and the county seat of Philadelphia County, with which it is coterminous. The city is located in the Northeastern United States along the Delaware and Schuylkill rivers. It is the fifth-most-populous city in the United States,...

. Founded in 1904 as Duane, Morris, Heckscher & Roberts, the firm has 24 offices in the United States, London, Singapore and Vietnam. In addition to legal services, Duane Morris has independent affiliates employing approximately 100 professionals engaged in other disciplines.
U.S. News & World Report

U.S. News & World Report

U.S. News & World Report is an American news magazine published from Washington, D.C. Along with Time and Newsweek it was for many years a leading news weekly, focusing more than its counterparts on political, economic, health and education stories...

 and Best Lawyers in a 2010 survey of Best Law Firms ranked Duane Morris nationally as follows:

Tier One:

Bankruptcy and Creditor Debtor Rights / Insolvency and Reorganization Law

Construction Law

Insurance Law

Tier Two:

Admiralty & Maritime Law

Banking and Finance Law

Tax Law

Tier Three:

Corporate Law

General Commercial Litigation

Intellectual Property Law

In 2011, the Am Law 100 ranked Duane Morris as the 67th largest law firm in the U.S.