Duane Morris LLP
Headquartered in Philadelphia, Pennsylvania, Duane Morris LLP employs 806 lawyers across the United States, according to The Law360 400 (2026).
- Office
- Philadelphia, Pennsylvania
- Website
- duanemorris.com
- Size
- 806 lawyers in the United StatesFirm-wide count, The Law360 400 (2026)
- Headquarters
- This office
- Traces its history to
- 1904
Philadelphia, Pennsylvania
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About Duane Morris LLP
Headquartered in Philadelphia, Pennsylvania, Duane Morris LLP employs 806 lawyers across the United States, according to The Law360 400 (2026).
It is one of 32 law firms we list in Philadelphia and one of 499 across Pennsylvania. By U.S. lawyer headcount, it ranks number 5 among the firms we list with an office in Philadelphia. Ballard Spahr LLP is listed at nearly the same location.
The firm's website is duanemorris.com.
Firm profile
Duane Morris is a Philadelphia-headquartered general-practice law firm that began in 1904 under the name Duane, Morris, Heckscher & Roberts. Besides its U.S. offices, it has offices in London, Singapore, Shanghai, Vietnam, Myanmar and Australia.
Duane Morris LLP traces its history to 1904.
Source: en.wikipedia.org
Check a Lawyer's License in Pennsylvania
Lawyers who practice in Pennsylvania are licensed by The Disciplinary Board of the Supreme Court of Pennsylvania. Before you hire anyone at Duane Morris LLP, confirm that the lawyer is licensed and in good standing with its Look Up an Attorney.
Look Up an AttorneyLaw Firms Near Duane Morris LLP
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Duane Morris LLP: Questions and Answers
- Where is Duane Morris LLP located?
- Duane Morris LLP is in Philadelphia, Pennsylvania.
- How do I contact Duane Morris LLP?
- The firm's website is duanemorris.com.
- How many lawyers does Duane Morris LLP have?
- Duane Morris LLP has 806 lawyers in the United States, according to The Law360 400 (2026). That count covers the whole firm, not only its Philadelphia office.
- Where is Duane Morris LLP headquartered?
- Duane Morris LLP is headquartered in Philadelphia, Pennsylvania. This office is its headquarters.
- When was Duane Morris LLP founded?
- Duane Morris LLP traces its history to 1904, counting the oldest firm it grew from.
- Which law firms are near Duane Morris LLP?
- The closest firms in the directory are Ballard Spahr LLP (same location), Blank Rome LLP (same location) and Cozen O'Connor P.C. (same location).
- How can I check that a lawyer at Duane Morris LLP is licensed?
- Lawyers in Pennsylvania are licensed by The Disciplinary Board of the Supreme Court of Pennsylvania. Use its Look Up an Attorney at padisciplinaryboard.org to confirm a lawyer is licensed and in good standing.
Listing from © OpenStreetMap contributors, lawyer count from The Law360 400 (2026), last checked October 2026. LawFirmWebAgency is not affiliated with this firm, and a listing is not an endorsement or a measure of quality.
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