Cozen O'Connor

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Cozen O'Connor P.C.
HeadquartersPhiladelphia, Pennsylvania[1]
No. of offices30 total (2 international)
No. of attorneysmore than 825
Major practice areasGeneral practice
Key peopleStephen A. Cozen, Founder & Chairman,[2] Patrick J. O'Connor, Vice Chairman,[3] Thomas A. Decker, Vice Chairman,[4] Michael J. Heller, President & CEO,[5] Vince R. McGuinness, Jr., Managing Partner[6]
Revenue$619M (2022)
Date founded1970
FounderStephen A. Cozen
Company typeProfessional corporation

Cozen O'Connor P.C. is an international law firm based in Center City Philadelphia, Pennsylvania.[7] The firm was ranked 74th on the AmLaw 100 Survey in 2023, 92nd on the Global 200 in 2020,[8] 1st in the nation in The American Lawyer in its Midlevel Associates Satisfaction Survey in 2017, and ranked 73rd on the National Law Journal's list of the 500 Largest American Law Firms in 2022.[9][10][11] Founded in 1970, the firm has expanded to more than 825 lawyers in 30 cities across two continents.[citation needed]

Cozen O'Connor is one of many law firms providing counsel to the detainees at the Guantanamo Bay detention camp.[citation needed]

Recent developments[edit]

Formation of Government Relations Subsidiary[edit]

In September 2009, the firm launched the subsidiary, Cozen O'Connor Public Strategies. [12] The subsidiary operates out of the firm's Washington, D.C., Pennsylvania, New York, New Jersey and Delaware offices.[13] Chaired by Mark Alderman, the group also includes Managing Partner, Howard Schweitzer,[14] the first COO of the Troubled Asset Relief Program.

Involvement in the Mayoral campaign of Bob Brady[edit]

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.[15]


  1. ^ "Philadelphia Archived November 7, 2009, at the Wayback Machine." Cozen O'Connor. Retrieved on November 11, 2009.
  2. ^ Stephen Cozen firm bio
  3. ^ Patrick O'Connor firm bio
  4. ^ Thomas Decker firm bio
  5. ^ Michael Heller firm bio
  6. ^ Vince McGuinness firm bio
  7. ^ Philadelphia Archived November 7, 2009, at the Wayback Machine. Cozen O'Connor. Retrieved on November 11, 2009.
  8. ^ "Cozen O'Connor". Retrieved July 13, 2021.
  9. ^ "The Am Law 100 2016 - Firms Ranked by Gross Revenue". American Lawyer. Retrieved October 18, 2017.
  10. ^ "Top Firms For Midlevel Associate Satisfaction: The National Rankings". The American Lawyer. August 28, 2017.
  11. ^ "The NLJ 500: Our Rankings of the Nation's Largest Law Firms".
  12. ^ "ABA Journal,, 22 September 2009". Archived from the original on July 8, 2011. Retrieved March 7, 2011.
  13. ^ "Home".
  14. ^ "Schweitzer, Howard". Archived from the original on June 11, 2011. Retrieved March 7, 2011.
  15. ^, Cozen O'Connor Has Standing to Challenge Ethics Board Opinion, 25 February 2011

External links[edit]