Cozen O'Connor

Cozen O'Connor is a privately held American full-service law firm headquartered in Philadelphia, Pennsylvania. Founded in 1970, the firm provides legal advice and representation across corporate and transactional matters, commercial and complex litigation, intellectual property, labor and employment, public strategies, and other practice areas. Its client work spans businesses, financial institutions, public-sector organizations, insurers, employers, and individuals, although the available reference material does not provide a complete client or practice-area breakdown. The firm developed from its Philadelphia base into a multinational practice with offices across the United States and additional operations in Canada, the United Kingdom, and Israel. The referenced material describes a network of more than 1,000 lawyers in 34 offices across North America and Europe. Its U.S. presence includes offices in major legal and commercial centers such as New York City, Washington, D.C., Minneapolis, Chicago, and Los Angeles. This geographic footprint supports a broad service model in which litigation, corporate work, regulatory advice, intellectual property, employment counseling, and industry-focused services can be coordinated across jurisdictions. Cozen O'Connor is associated particularly with commercial litigation and corporate legal work, while presenting itself as a broad, integrated firm rather than as a single-specialty practice. Its public-strategy capability was formalized through the creation of Cozen O'Connor Public Strategies in September 2009. The subsidiary operates from firm offices and added a government-relations and public-policy dimension to the firm's legal services. Mark Alderman chaired the subsidiary, and Howard Schweitzer, identified in the reference material as its managing partner, had previously been the first chief operating officer of the Troubled Asset Relief Program. The firm's history also includes involvement in a legal dispute arising from Bob Brady's 2007 Philadelphia mayoral campaign. Cozen O'Connor represented Brady in connection with a ballot challenge and later sued the Philadelphia Board of Ethics over campaign-contribution restrictions and the firm's ability to be compensated for its work. In 2011, the Pennsylvania Supreme Court held that the firm had standing to pursue the challenge, reversing the lower-court rulings. The case illustrates the firm's involvement not only in conventional commercial matters but also in politically sensitive litigation concerning campaign-finance rules. In 2025, Cozen O'Connor announced a merger with Minneapolis-based Moss & Barnett. The transaction was reported as adding more than 50 lawyers to Cozen O'Connor's roster, and completion of the merger was reported on January 5, 2026. The combination expanded the firm's Minneapolis presence and continued its strategy of growth through geographic and personnel expansion. The firm was ranked 77th among the largest U.S. law firms by revenue in the 2025 Am Law 100 and 95th in the 2025 Global 200, according to the referenced Wikipedia material. No financial figures are included here because the available material does not provide independently sourced revenue amounts or a defined reporting period. Michael J. Heller is identified as the firm's chief executive officer and chairman. Cozen O'Connor remains an active private professional-services organization rather than a publicly traded company, and no stock ticker applies.

Cozen O'Connor was founded in 1970 and is headquartered in Philadelphia, Pennsylvania. The available reference material does not identify the firm's founding partners or describe its earliest organizational structure, so those details are not stated here. Over time, the firm expanded beyond its original Philadelphia base into a multinational practice. The referenced profile describes more than 1,000 lawyers working from 34 offices across North America and Europe, with named offices including New York City, Washington, D.C., Minneapolis, Chicago, and Los Angeles. Its international operating markets include the United States, Canada, the United Kingdom, and Israel. The firm's development has centered on a full-service model. Its work includes corporate and transactional matters, commercial and complex litigation, intellectual property, labor and employment, and related advisory services. The available source particularly associates the firm with commercial litigation and corporate practice, but does not provide a complete chronology of individual practice-group launches, office openings, or major client engagements. Accordingly, the history is best understood as an expansion from a Philadelphia law firm into a broad, geographically distributed legal-services organization. A significant organizational development occurred in September 2009 with the creation of Cozen O'Connor Public Strategies. This subsidiary operates through the firm's offices and provides government-relations and public-policy services alongside the firm's legal work. Mark Alderman chaired the operation, while Howard Schweitzer served as its managing partner. The reference material identifies Schweitzer as the first chief operating officer of the Troubled Asset Relief Program, a background relevant to the subsidiary's public-policy positioning. Cozen O'Connor also became involved in litigation connected with Bob Brady's 2007 Philadelphia mayoral campaign. The firm represented Brady in efforts related to a ballot challenge brought by Tom Knox. After the campaign, the firm filed an action against the Philadelphia Board of Ethics seeking relief from campaign-contribution limits that affected how it could be paid for its work. The applicable city rules limited contributions by individuals to $2,500 and contributions by law firms, political action committees, and unincorporated businesses to $10,000. In February 2011, the Pennsylvania Supreme Court ruled that Cozen O'Connor had standing to challenge the ethics board, reversing the lower-court decisions. The ruling addressed the firm's ability to pursue the declaratory action; the available material does not establish a broader change to the city's campaign-finance regime. The firm's most recent documented expansion is its combination with Minneapolis-based Moss & Barnett. The transaction was announced in 2025 and was described as adding more than 50 lawyers. Completion was reported on January 5, 2026. This merger continued Cozen O'Connor's geographic-growth strategy and strengthened its presence in Minneapolis. The source material does not provide the transaction's financial terms or detailed post-merger management structure. Michael J. Heller is identified as chief executive officer and chairman. In 2025, the firm was ranked 77th in the Am Law 100 and 95th in the Global 200, as reported in the supplied encyclopedia reference. Cozen O'Connor is privately held and active; because it is not publicly listed, it has no public ticker.

• 2026

  Moss & Barnett merger completed

  [1]Cozen O'Connoren.wikipedia.org

  The combination with Moss & Barnett was reported completed on January 5, 2026.

• 2025

  Announced merger with Moss & Barnett

  [1]Cozen O'Connoren.wikipedia.org

  Cozen O'Connor announced a merger with Minneapolis firm Moss & Barnett, expected to add more than 50 lawyers.

• 2025

  Placed in Am Law 100 and Global 200 rankings

  [1]Cozen O'Connoren.wikipedia.org

  The firm was listed 77th in the 2025 Am Law 100 and 95th in the 2025 Global 200.

• 2011

  Pennsylvania Supreme Court recognizes standing in ethics-board case

  [1]Cozen O'Connoren.wikipedia.org

  The court held that Cozen O'Connor could pursue its challenge to the Philadelphia Board of Ethics over campaign-contribution restrictions.

• 2009

  Cozen O'Connor Public Strategies established

  [1]Cozen O'Connoren.wikipedia.org

  The firm created a government-relations subsidiary operating from its offices.

• 2007

  Representation connected with Philadelphia mayoral campaign

  [1]Cozen O'Connoren.wikipedia.org

  The firm represented Bob Brady in matters related to a ballot challenge during the 2007 Philadelphia mayoral election.

• 1970

  Firm founded

  [1]Cozen O'Connoren.wikipedia.org

  Cozen O'Connor was established as a law firm in Philadelphia, Pennsylvania.

Mid-to-large-market, full-service multinational law firm with a strong commercial litigation and corporate practice.

• Legal services

  Commercial litigation

  Representation and strategic advice in business disputes, including complex commercial litigation and related proceedings. The available material identifies commercial litigation as one of the firm's prominent areas, but does not provide a complete list of subject-matter specialties or representative matters.

• Legal services

  Corporate and transactional services

  Counsel for companies and other organizations on corporate and transactional matters. These services form part of the firm's full-service offering, although the supplied sources do not enumerate specific transaction types or sector teams.

• Legal services

  Intellectual property

  Legal advice and representation concerning intellectual-property matters. The reference material names intellectual property as a practice area but does not specify the firm's complete portfolio of patents, trademarks, copyrights, trade secrets, or technology services.

• Legal services

  Labor and employment

  Advice and representation for employers and other clients on labor and employment issues. The supplied information identifies this as a core service category without providing a detailed breakdown of counseling, litigation, or regulatory offerings.

• Government relations and public strategies · 2009

  Cozen O'Connor Public Strategies

  A government-relations subsidiary established in September 2009 and operated from Cozen O'Connor offices. It extends the firm's capabilities into public policy and government affairs, complementing its legal practice.

• 2007Bob Brady Philadelphia mayoral campaign legal representation

  United States · Philadelphia

  Cozen O'Connor represented Bob Brady in efforts connected with a ballot challenge during the 2007 Philadelphia mayoral election.

  Outcome. The representation led to a subsequent dispute over the firm's compensation and the application of Philadelphia campaign-contribution limits.

  Source

• 2025

  Merge with Moss & BarnettM&A

  Background

  Cozen O'Connor pursued expansion through a combination with the Minneapolis-based law firm Moss & Barnett.

  Action taken

  The firms announced a merger expected to add more than 50 lawyers to Cozen O'Connor.

  Aftermath

  The merger was reported completed on January 5, 2026, strengthening the firm's Minneapolis presence.

  Source

• 2009

  Create a government-relations subsidiaryStrategy

  Background

  The firm sought to add public-policy and government-relations capabilities to its legal-services platform.

  Action taken

  Cozen O'Connor established Cozen O'Connor Public Strategies in September 2009.

  Aftermath

  The subsidiary operated from firm offices under Mark Alderman and Howard Schweitzer.

  Source

• 2026

  Merger with Moss & Barnett reported completed[1]Cozen O'Connoren.wikipedia.org

  M&A

  The merger was reported as completed on January 5, 2026, expanding Cozen O'Connor's Minneapolis platform.

• 2025

  Cozen O'Connor announced a merger with Moss & Barnett[1]Cozen O'Connoren.wikipedia.org

  M&A · Leadership change

  The firm announced a combination with Minneapolis-based Moss & Barnett that was expected to add more than 50 lawyers.

• 2025

  Cozen O'Connor ranked in the 2025 Am Law 100 and Global 200[1]Cozen O'Connoren.wikipedia.org

  Other

  The firm was listed 77th in the 2025 Am Law 100 and 95th in the 2025 Global 200, according to the referenced encyclopedia material.

1. 1Cozen O'Connoren.wikipedia.org
2. 2Cozen O'Connor official websitecozen.com