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VerifiedLawFirms editorial: Scale, history and geographic reach — Cozen O'Connor LLP dates its founding to 1970 and reports more than 1,000 attorneys. Those lawyers practice in 33 cities across North America and Europe.

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About Cozen O'Connor

Cozen O'Connor is a full-service law firm founded in 1970. The firm reports more than 1,000 attorneys practicing in 33 cities across North America and Europe, with offices in the United States, Canada, and the United Kingdom.

Its clients include Fortune 500 companies, middle-market firms, startups, and individuals. The firm organizes its work around three main areas: litigation, business law, and government relations.

On the business side, the firm handles mergers and acquisitions, venture capital, intellectual property, real estate, securities, tax, bankruptcy, employee benefits, insurance corporate and regulatory matters, privacy and data security, and health care. Its litigation practice covers complex commercial disputes, class actions, labor and employment, antitrust, product liability, aviation, construction, insurance claims, and criminal defense and government investigations.

The government relations group, which includes Cozen O'Connor Public Strategies, advises clients on state attorneys general matters and works at the federal, state, and local levels. Offices include Philadelphia, New York, Chicago, Los Angeles, Washington, D.C., London, Toronto, and Vancouver.

Editor's Review

VerifiedLawFirms editorial

Scale, history and geographic reach

Cozen O'Connor LLP dates its founding to 1970 and reports more than 1,000 attorneys. Those lawyers practice in 33 cities across North America and Europe. The firm has offices in the United States, Canada, and the United Kingdom.

The client base described on the firm's site includes Fortune 500 companies, middle-market firms, startups, and individuals. This range fits the mix of corporate counseling, disputes, regulatory work, and public policy matters on its practice list. It also suggests that the firm works with clients at different stages of business growth.

Listed locations include Philadelphia, New York, Chicago, Los Angeles, Washington, D.C., London, Toronto, and Vancouver. Philadelphia is one of the firm's major listed offices, though the site does not label any location as its headquarters. The geographic reach gives the firm a presence in several large commercial and government centers.

Three main areas of work

The firm organizes its services around litigation, business law, and government relations. Each area contains several narrower fields, including intellectual property, insurance law, real estate, mergers and acquisitions, and business litigation. In my opinion, this clear division is useful because it shows how the firm's broad lawyer count connects to defined types of legal work.

Many client matters can involve more than one of these areas. An acquisition may raise tax, securities, intellectual property, employment, or privacy questions. A regulated business dispute may involve litigation counsel and lawyers who work with government agencies.

Business law and transaction work

Cozen O'Connor's business law work includes mergers and acquisitions, venture capital, securities, tax, bankruptcy, employee benefits, and health care. The firm also handles insurance corporate and regulatory matters. These fields cover business formation and growth, financing, ownership changes, financial strain, and industry rules.

Mergers, financing and securities

In a merger or acquisition, lawyers commonly review the target company's contracts, ownership records, liabilities, employment terms, and regulatory duties. They may draft the purchase agreement, disclosure schedules, closing documents, and post-closing terms. The firm's related tax, securities, benefits, privacy, and intellectual property practices may address issues that arise during that process.

Venture capital work has a different set of documents and decisions. A financing may involve a term sheet, stock purchase documents, investor rights, board rights, and limits on future transfers. Securities law can affect how a company offers ownership interests and communicates with potential investors.

Bankruptcy work can involve debtors, creditors, lenders, buyers, or other parties affected by financial distress. Courts and trustees may take part, depending on the type of proceeding. Tax and employee benefit questions can also shape the cost and structure of a deal or restructuring.

Real estate, intellectual property and data

The firm's real estate practice sits within its business law offering. Real estate matters commonly require review of purchase contracts, leases, financing papers, title records, land use rules, and closing documents. The parties may also need advice on ownership structures, tax treatment, or disputes tied to a property.

Intellectual property appears in both the firm's business and litigation descriptions. On the business side, intellectual property counsel may address ownership, licensing, transfers, confidentiality terms, and rights connected to a transaction. Those questions can carry particular weight for startups and companies whose value depends on technology, brands, or creative assets.

Privacy and data security are also part of the stated business practice. This work may involve data collection terms, vendor contracts, internal policies, incident duties, and rules that apply to personal information. The firm's list places these issues alongside corporate and regulatory advice, which is a practical connection for companies handling customer, employee, or health data.

Commercial disputes and industry litigation

The litigation group handles complex commercial cases, class actions, antitrust claims, product liability, aviation matters, and construction disputes. Its stated work also includes labor and employment, intellectual property, insurance claims, criminal defense, and government investigations. This is a wide litigation list with both civil and enforcement matters.

Business cases and class actions

Commercial litigation often begins with contracts, ownership rights, business conduct, or financial obligations. Lawyers may assess the governing documents, preserve records, interview witnesses, and evaluate the forum for the dispute. Pleadings, document exchange, depositions, motions, settlement talks, and trial can follow, depending on the case.

Class actions add questions about whether a proposed group meets the legal requirements for collective treatment. Courts examine the claims of the named parties, the issues shared by the proposed class, and the proposed method of resolving those claims. Antitrust cases can require close review of markets, pricing, competition, business records, and economic evidence.

Labor and employment disputes may concern workplace policies, contracts, pay, discrimination claims, retaliation claims, or the end of employment. Product liability and construction cases often depend on technical records and testimony about design, manufacturing, warnings, project duties, or performance. Aviation cases can involve their own contracts, operating rules, insurance questions, and technical evidence.

Insurance claims and intellectual property disputes

Insurance is present on both the corporate and litigation sides of the firm's work. Insurance claims litigation commonly turns on policy language, the facts of the loss, notice, exclusions, limits, and the duties owed by each party. Regulatory counsel may address a different set of questions involving insurers' operations, filings, transactions, and dealings with public agencies.

Intellectual property disputes may concern ownership, infringement, licensing duties, confidential information, or the use of protected material. Courts may need evidence about creation, registration, contracts, access, use, and financial harm. The firm's inclusion of intellectual property in business law and litigation indicates that it addresses both transactions involving rights and conflicts over those rights.

Investigations and criminal defense

The firm lists criminal defense and government investigations within its litigation work. An investigation may involve agency requests, subpoenas, interviews, document preservation, internal fact review, and communication with enforcement officials. The sequence depends on the agency, the legal issue, and whether prosecutors or regulators have opened a formal proceeding.

Counsel in these matters may need to assess individual and company interests separately. Lawyers also examine who holds relevant records, which legal privileges apply, and what response deadlines control. Government investigations may overlap with employment, health care, securities, privacy, or other regulated fields named by the firm.

Government relations and public agency work

Cozen O'Connor includes government relations as one of its three main areas. The group includes Cozen O'Connor Public Strategies and works at federal, state, and local levels. Its site also identifies advice concerning state attorneys general matters.

Government relations work can involve proposed laws, administrative rules, public policy, and contact with officials. Clients may need analysis of a proposal's legal and business effects, preparation for meetings or hearings, and tracking of action by legislatures or agencies. State attorneys general may address consumer protection, competition, privacy, health care, and other matters within state authority.

Public policy work and litigation can meet when an inquiry develops into an enforcement action or court case. Business lawyers may also contribute when a new rule affects corporate operations, transactions, or reporting duties. The firm's structure places these related services within the same legal platform.

What the stated record supports

The clearest feature of Cozen O'Connor is the scope of its published practice list. The firm identifies work for large companies, middle-market businesses, startups, and individuals. It pairs transaction fields with litigation, regulatory advice, investigations, and government relations.

Prospective clients can use the relevant practice area as a starting point when assessing fit. A business dispute may call for experience with the governing contract and the client's industry. A transaction may require several legal fields when financing, property, intellectual property, tax, employment terms, or regulatory approval affect the same deal.

Cozen O'Connor uses the legal entity name Cozen O'Connor LLP in its firm news and on its Montreal, Toronto, and Vancouver office listings. The firm reports 33-city coverage through more than 1,000 attorneys. Its offices span the United States, Canada, and the United Kingdom.

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1650 Market Street
Philadelphia, PA 19103

Map of 1650 Market Street, Philadelphia, PA (see the address above for a text alternative).