|No. of offices||23 total (2 international)|
|No. of attorneys||531 (2008)|
|Major practice areas||General practice|
|Key people||Stephen A. Cozen, Founder & Chairman, Patrick J. O'Connor, Vice Chairman|
|Founder||Stephen A. Cozen|
|Company type||Professional corporation|
Cozen O'Connor P.C. is a large U.S. law firm based in Center City Philadelphia, Pennsylvania. The firm was ranked 99th on the AmLaw 100 Survey in 2011, ranked 114th on the AmLaw 200 Survey in 2008, and ranked 89th on the National Law Journal's list of the 250 Largest American Law Firms in 2007. Although it is one of the younger large firms in the United States, it has pursued a strategy of aggressive growth, and has expanded to 23 offices employing over 500 lawyers.
Formation of Government Relations Subsidiary
In September 2009, the firm launched the subsidiary, Cozen O'Connor Public Strategies.  The subsidiary operates out of the firm's Washington, D.C., Pennsylvania, New York, New Jersey and Delaware offices. Chaired by Mark Alderman, the group also includes Managing Partner, Howard Schweitzer, the first COO of the Troubled Asset Relief Program.
Involvement in the Mayoral campaign of Bob Brady
Cozen O'Connor filed a lawsuit in the Philadelphia County Court of Common Pleas against the Philadelphia Board of Ethics in an attempt to lift campaign contribution limits for the 2007 Philadelphia mayoral election. The firm had represented Bob Brady in his efforts off a ballot challenge from Tom Knox, and wanted to be paid for its work. City law limited campaign contributions to $2,500 for individuals and $10,000 for law firms, political action committees and unincorporated businesses. In February 2011, the court ruled that the firm has the standing to challenge the ethics board. In reversing the lower courts, Justice Max Baer said Cozen O'Connor sufficiently pleaded in its declaratory judgment action its own inability to forgive the total debt without violating campaign finance laws.
- Stephen Cozen firm bio
- Patrick O'Connor firm bio
- AmLaw200 Performance Statistics, 2007
- "Philadelphia." Cozen O'Connor. Retrieved on November 11, 2009.
- "The Am Law 100 2011 - Gross Revenue". American Lawyer. Retrieved August 28, 2011.
- Cozen O'Connor Awards & Honors
- ABA Journal, Cozen.com, 22 September 2009
- law.com, Cozen O'Connor Has Standing to Challenge Ethics Board Opinion, 25 February 2011