aid: duane-morris
name: Duane Morris
description: >-
  Duane Morris LLP is a Philadelphia-headquartered, full-service U.S. and
  international law firm founded in 1904 by Russell Duane, Steven Heckscher,
  and Roland S. Morris. Chaired by Matthew A. Taylor, the firm describes
  itself as "a law firm with more than 900 attorneys in offices across the
  United States and internationally" — with a U.S. footprint spanning the
  East Coast, Texas, the Mountain West, and California, plus international
  offices in London, Singapore, Vietnam (Hanoi, Ho Chi Minh City), Shanghai,
  Myanmar, and joint ventures/alliances reaching Mexico and Latin America.
  An Am Law 100 firm since 2001, Duane Morris is known for depth in
  intellectual property (including patent prosecution and PTAB practice),
  trial and appellate litigation, real estate, corporate transactions,
  employment, healthcare, cannabis, and life sciences. The firm publishes an
  extensive LexBlog-powered thought-leadership network of more than 50
  practice-area blogs, all of which expose RSS 2.0 feeds via the standard
  WordPress /feed/ convention. Duane Morris does not expose any public
  developer API, SDK, OpenAPI/AsyncAPI spec, GraphQL endpoint, webhooks,
  status page, or developer portal; the GitHub organization
  github.com/duanemorris exists but has no public repositories. The firm's
  only machine-readable surfaces are the RSS feeds of its blog network.
type: Index
position: Consumer
access: 3rd-Party
image: https://kinlane-productions2.s3.amazonaws.com/apis-json/apis-json-logo.jpg
url: >-
  https://raw.githubusercontent.com/api-evangelist/duane-morris/refs/heads/main/apis.yml
created: '2026-05-23'
modified: '2026-05-23'
specificationVersion: '0.19'
kind: company
tags:
  - Antitrust
  - Appellate
  - Arbitration
  - Banking
  - Bankruptcy
  - Cannabis
  - Capital Markets
  - Class Action
  - Construction
  - Corporate
  - Cybersecurity
  - Data Privacy
  - Education
  - Employment Law
  - Energy
  - Environmental
  - ESG
  - Fintech
  - Franchise
  - Gaming
  - Healthcare
  - Immigration
  - Insurance
  - Intellectual Property
  - International Arbitration
  - International Law
  - Labor
  - Law
  - Law Firm
  - Legal
  - Legal Services
  - Life Sciences
  - Litigation
  - Mergers and Acquisitions
  - Patents
  - PFAS
  - Private Equity
  - Products Liability
  - Real Estate
  - Regulatory
  - Securities
  - Sports
  - Sustainability
  - Tax
  - Technology
  - Trade Secrets
  - Transportation
  - White Collar Defense
apis: []
common:
  - type: Website
    url: https://www.duanemorris.com
  - type: About
    url: https://www.duanemorris.com/site/about.html
  - type: Practice Areas
    url: https://www.duanemorris.com/site/practiceareas.html
  - type: Offices
    url: https://www.duanemorris.com/site/offices.html
  - type: Attorneys
    url: https://www.duanemorris.com/site/attorneys.html
  - type: News
    url: https://www.duanemorris.com/site/news.html
  - type: Alerts
    url: https://www.duanemorris.com/site/alerts.html
  - type: Blogs
    url: https://blogs.duanemorris.com
  - type: GitHub
    url: https://github.com/duanemorris
  - type: LinkedIn
    url: https://www.linkedin.com/company/duane-morris-llp
  - type: Wikipedia
    url: https://en.wikipedia.org/wiki/Duane_Morris
  - type: Contact
    url: https://www.duanemorris.com/site/contact.html
x-firm-profile:
  founded: '1904'
  founders:
    - Russell Duane
    - Steven Heckscher
    - Roland S. Morris
  headquarters: 30 South 17th Street, Philadelphia, Pennsylvania
  chair: Matthew A. Taylor
  coo: Charles J. O'Donnell
  lawyers: 900+
  offices: 30+
  revenue: $526.23 million USD (2021, per Wikipedia citing Am Law)
  profit_per_equity_partner: $1.081 million USD (2021)
  structure: Limited Liability Partnership (LLP)
  am_law_ranking: Am Law 200 #82 (2025 gross revenue); NLJ 500 #74 (2025 size)
  am_law_status: Am Law 100 member since 2001
  positioning: >-
    "A law firm with more than 900 attorneys in offices across the United
    States and internationally, is asked by a broad array of clients to
    provide innovative solutions to today's legal and business challenges."
  notable_achievement: 16 consecutive years of revenue growth
  hbs_case_study: 'Duane Morris: Collaborating for Growth'
x-practice-areas:
  - ADA Title III Compliance
  - Animal Law
  - Antitrust
  - Appellate
  - Artificial Intelligence
  - Banking and Finance
  - Bankruptcy and Business Reorganization
  - Benefits and Executive Compensation
  - Cannabis
  - Capital Markets
  - Class Action Defense
  - Construction
  - Corporate
  - Delaware Business Law
  - Discovery Strategy and Data Analytics
  - Education
  - Energy and Environmental
  - European Sanctions Enforcement
  - Fashion, Retail and Consumer Branded Products
  - Fintech
  - Franchise
  - Gaming
  - Health Law
  - Immigration
  - Insurance
  - Intellectual Property
  - International Arbitration
  - Labor and Employment
  - Lender Liability and Loan Enforcement
  - Life Sciences
  - Mergers and Acquisitions
  - New Markets Tax Credits and Affordable Housing
  - Non-Compete and Trade Secrets
  - Opportunity Zones
  - PFAS and Environmental Mass Tort
  - Private Client Services (Wealth Planning)
  - Pro Bono
  - Products Liability
  - Project Development, Infrastructure and P3
  - PTAB Practice
  - Real Estate
  - Securities Arbitration
  - Sports Law
  - State Attorneys General Practice
  - Sustainability, Resiliency and Risk Mitigation (ESG)
  - Tax
  - Technology Law
  - Transportation, Automotive and Logistics
  - Trial and Litigation
  - White Collar Criminal Defense
x-industries:
  - Banking and Finance
  - Cannabis
  - Construction
  - Education
  - Energy
  - Fashion and Retail
  - Gaming and Sports
  - Healthcare
  - Insurance
  - Life Sciences and Biotech
  - Manufacturing
  - Real Estate
  - Technology
  - Transportation
x-offices-us:
  - Atlanta
  - Austin
  - Baltimore
  - Berwyn (satellite)
  - Boca Raton
  - Boston
  - Chicago
  - Dallas
  - Fort Worth
  - Houston
  - Las Vegas
  - Los Angeles
  - Miami
  - New York
  - North Jersey
  - Philadelphia
  - Pittsburgh
  - Portland (Maine, satellite)
  - San Diego
  - San Francisco
  - Seattle (satellite)
  - Silicon Valley
  - South Jersey
  - Washington, DC
  - Wilmington
x-offices-international:
  - Hanoi, Vietnam
  - Ho Chi Minh City, Vietnam
  - London, United Kingdom
  - Myanmar (Yangon)
  - Shanghai, China (joint venture)
  - Singapore (Duane Morris and Selvam joint venture)
x-international-alliances:
  - Mexico
  - Latin America
x-mergers:
  - name: Satterlee Stephens
    year: '2020-01'
    location: New York
    note: New York-based firm absorbed in January 2020.
x-notable-cases:
  - name: Markman v. Westview Instruments, Inc.
    type: Patent infringement (US Supreme Court precedent on claim construction)
  - name: Tobacco Master Settlement Agreement
    year: '1998'
    note: >-
      Represented Pennsylvania in the 46-state litigation resulting in the
      ~$206 billion settlement with the major tobacco companies.
x-notable-alumni:
  - Roland S. Morris (US Ambassador to Japan; founding partner)
  - Michael Baylson (US District Judge, Eastern District of Pennsylvania)
  - Gene E. K. Pratter (US District Judge)
  - Marjorie Rendell (US Court of Appeals for the Third Circuit)
  - Mark Singel (Lieutenant Governor of Pennsylvania, 1987-1995)
x-blogs:
  - name: ADA Title III Compliance
    url: https://blogs.duanemorris.com/adatitleiiicompliance/
    rss: https://blogs.duanemorris.com/adatitleiiicompliance/feed/
    topic: Disability access compliance
  - name: Animal Law Developments
    url: https://blogs.duanemorris.com/animallawdevelopments/
    rss: https://blogs.duanemorris.com/animallawdevelopments/feed/
    topic: Animal law
  - name: Antitrust Law
    url: https://blogs.duanemorris.com/antitrustlaw/
    rss: https://blogs.duanemorris.com/antitrustlaw/feed/
    topic: Antitrust and competition
  - name: Appellate Review
    url: https://blogs.duanemorris.com/appellatelaw/
    rss: https://blogs.duanemorris.com/appellatelaw/feed/
    topic: Appellate law
  - name: The Artificial Intelligence Blog
    url: https://blogs.duanemorris.com/artificialintelligence/
    rss: https://blogs.duanemorris.com/artificialintelligence/feed/
    topic: AI law and regulation
  - name: Banking and Finance Law
    url: https://blogs.duanemorris.com/bankinglaw/
    rss: https://blogs.duanemorris.com/bankinglaw/feed/
    topic: Banking and finance
  - name: Benefits Law
    url: https://blogs.duanemorris.com/benefitslaw/
    rss: https://blogs.duanemorris.com/benefitslaw/feed/
    topic: Employee benefits
  - name: Business Reorganization and Financial Restructuring
    url: https://blogs.duanemorris.com/businessreorganizationfinancialrestructuring/
    rss: https://blogs.duanemorris.com/businessreorganizationfinancialrestructuring/feed/
    topic: Bankruptcy and restructuring
  - name: Cannabis Industry
    url: https://blogs.duanemorris.com/cannabis/
    rss: https://blogs.duanemorris.com/cannabis/feed/
    topic: Cannabis law and regulation
  - name: Capital Markets
    url: https://blogs.duanemorris.com/capitalmarkets/
    rss: https://blogs.duanemorris.com/capitalmarkets/feed/
    topic: Securities and capital markets
  - name: Class Action Defense
    url: https://blogs.duanemorris.com/classactiondefense/
    rss: https://blogs.duanemorris.com/classactiondefense/feed/
    topic: Class action litigation defense
  - name: Concerted Action - Labor Blog
    url: https://blogs.duanemorris.com/laborlaw/
    rss: https://blogs.duanemorris.com/laborlaw/feed/
    topic: Labor and employment
  - name: Construction Law
    url: https://blogs.duanemorris.com/constructionlaw/
    rss: https://blogs.duanemorris.com/constructionlaw/feed/
    topic: Construction
  - name: Coronavirus (COVID-19)
    url: https://blogs.duanemorris.com/coronaviruscovid19/
    rss: https://blogs.duanemorris.com/coronaviruscovid19/feed/
    topic: Pandemic-related legal updates (archive)
  - name: Cuba, Puerto Rico and the Caribbean
    url: https://blogs.duanemorris.com/puertoricoandcaribbean/
    rss: https://blogs.duanemorris.com/puertoricoandcaribbean/feed/
    topic: Regional law
  - name: Discovery Strategy and Data Analytics
    url: https://blogs.duanemorris.com/discoverystrategy/
    rss: https://blogs.duanemorris.com/discoverystrategy/feed/
    topic: E-discovery and analytics
  - name: Diversity and Inclusion
    url: https://blogs.duanemorris.com/diversityandinclusion/
    rss: https://blogs.duanemorris.com/diversityandinclusion/feed/
    topic: DE&I and workplace
  - name: Delaware Business Law
    url: https://blogs.duanemorris.com/delawarebusinesslaw/
    rss: https://blogs.duanemorris.com/delawarebusinesslaw/feed/
    topic: Delaware corporate law
  - name: Duane Morris Institute
    url: https://duanemorrisinstitute.com/blog/
    rss: https://duanemorrisinstitute.com/blog/feed/
    topic: Employment and workplace law (institute)
  - name: Duane Morris and Selvam
    url: https://blogs.duanemorris.com/duanemorrisandselvam/
    rss: https://blogs.duanemorris.com/duanemorrisandselvam/feed/
    topic: Singapore joint venture practice
  - name: Duane Morris London
    url: https://blogs.duanemorris.com/london/
    rss: https://blogs.duanemorris.com/london/feed/
    topic: UK practice
  - name: 'UpdateED: Education Law'
    url: https://blogs.duanemorris.com/updateeducation/
    rss: https://blogs.duanemorris.com/updateeducation/feed/
    topic: Education law
  - name: Energy and Environmental
    url: https://blogs.duanemorris.com/energyenvironmental/
    rss: https://blogs.duanemorris.com/energyenvironmental/feed/
    topic: Energy and environmental
  - name: European Sanctions Enforcement
    url: https://blogs.duanemorris.com/europeansanctionsenforcement/
    rss: https://blogs.duanemorris.com/europeansanctionsenforcement/feed/
    topic: European sanctions
  - name: Fashion, Retail and Consumer Branded Products
    url: https://blogs.duanemorris.com/fashionretailbrandedconsumergoods/
    rss: https://blogs.duanemorris.com/fashionretailbrandedconsumergoods/feed/
    topic: Fashion and retail law
  - name: Fintechnically Speaking
    url: https://blogs.duanemorris.com/fintech/
    rss: https://blogs.duanemorris.com/fintech/feed/
    topic: Fintech law
  - name: Franchise Law
    url: https://blogs.duanemorris.com/franchiselaw/
    rss: https://blogs.duanemorris.com/franchiselaw/feed/
    topic: Franchise law
  - name: Gaming Law
    url: https://blogs.duanemorris.com/gaminglaw/
    rss: https://blogs.duanemorris.com/gaminglaw/feed/
    topic: Gaming and sports betting
  - name: Green IP
    url: https://blogs.duanemorris.com/greenip/
    rss: https://blogs.duanemorris.com/greenip/feed/
    topic: IP and sustainability
  - name: Health Law
    url: https://blogs.duanemorris.com/healthlaw/
    rss: https://blogs.duanemorris.com/healthlaw/feed/
    topic: Healthcare law
  - name: Immigration Law
    url: https://blogs.duanemorris.com/immigrationlaw/
    rss: https://blogs.duanemorris.com/immigrationlaw/feed/
    topic: Immigration
  - name: Insurance Law
    url: https://blogs.duanemorris.com/insurancelaw/
    rss: https://blogs.duanemorris.com/insurancelaw/feed/
    topic: Insurance
  - name: International Arbitration
    url: https://blogs.duanemorris.com/internationalarbitration/
    rss: https://blogs.duanemorris.com/internationalarbitration/feed/
    topic: International arbitration
  - name: The Legal Dish
    url: https://blogs.duanemorris.com/thelegaldish/
    rss: https://blogs.duanemorris.com/thelegaldish/feed/
    topic: Food, beverage, and hospitality
  - name: Lender Liability and Loan Enforcement
    url: https://blogs.duanemorris.com/lenderliabilityandloanenforcement/
    rss: https://blogs.duanemorris.com/lenderliabilityandloanenforcement/feed/
    topic: Banking and lending litigation
  - name: Life Sciences Law
    url: https://blogs.duanemorris.com/lifescienceslaw/
    rss: https://blogs.duanemorris.com/lifescienceslaw/feed/
    topic: Biotech and life sciences
  - name: New Markets Tax Credit, Historic Tax Credits, and Affordable Housing
    url: https://blogs.duanemorris.com/newmarketslaw/
    rss: https://blogs.duanemorris.com/newmarketslaw/feed/
    topic: Tax credits and affordable housing
  - name: Non-Compete and Trade Secrets Law
    url: https://blogs.duanemorris.com/tradesecretslaw/
    rss: https://blogs.duanemorris.com/tradesecretslaw/feed/
    topic: Trade secrets and restrictive covenants
  - name: Opportunity Zones - Insights From the Land of OZ
    url: https://blogs.duanemorris.com/opportunityzones/
    rss: https://blogs.duanemorris.com/opportunityzones/feed/
    topic: Opportunity Zone tax law
  - name: PFAS
    url: https://blogs.duanemorris.com/pfas/
    rss: https://blogs.duanemorris.com/pfas/feed/
    topic: PFAS environmental law
  - name: Private Client Services
    url: https://blogs.duanemorris.com/wealthplanning/
    rss: https://blogs.duanemorris.com/wealthplanning/feed/
    topic: Wealth and estate planning
  - name: Pro Bono
    url: https://blogs.duanemorris.com/probonolaw/
    rss: https://blogs.duanemorris.com/probonolaw/feed/
    topic: Pro bono practice
  - name: Products Liability
    url: https://blogs.duanemorris.com/productsliability/
    rss: https://blogs.duanemorris.com/productsliability/feed/
    topic: Products liability litigation
  - name: Project Development, Infrastructure and P3
    url: https://blogs.duanemorris.com/projectdevelopmentinfrastructurep3/
    rss: https://blogs.duanemorris.com/projectdevelopmentinfrastructurep3/feed/
    topic: Infrastructure and public-private partnerships
  - name: PTAB Practice
    url: https://blogs.duanemorris.com/ptab/
    rss: https://blogs.duanemorris.com/ptab/feed/
    topic: Patent Trial and Appeal Board practice
  - name: Securities Arbitration
    url: https://blogs.duanemorris.com/securitiesarbitration/
    rss: https://blogs.duanemorris.com/securitiesarbitration/feed/
    topic: Securities arbitration
  - name: Sports Law
    url: https://blogs.duanemorris.com/sportslaw/
    rss: https://blogs.duanemorris.com/sportslaw/feed/
    topic: Sports law
  - name: State Attorneys General
    url: https://blogs.duanemorris.com/stateattorneysgeneral/
    rss: https://blogs.duanemorris.com/stateattorneysgeneral/feed/
    topic: State AG regulatory practice
  - name: Sustainability, Resiliency and Risk Mitigation
    url: https://blogs.duanemorris.com/esg/
    rss: https://blogs.duanemorris.com/esg/feed/
    topic: ESG and sustainability
  - name: TechLaw
    url: https://blogs.duanemorris.com/techlaw/
    rss: https://blogs.duanemorris.com/techlaw/feed/
    topic: Technology law
  - name: Transportation, Automotive and Logistics
    url: https://blogs.duanemorris.com/transportation/
    rss: https://blogs.duanemorris.com/transportation/feed/
    topic: Transportation law
  - name: UK Employment Law Update
    url: https://blogs.duanemorris.com/ukemploymentupdate/
    rss: https://blogs.duanemorris.com/ukemploymentupdate/feed/
    topic: UK labor and employment
  - name: Vietnam
    url: https://blogs.duanemorris.com/vietnam/
    rss: https://blogs.duanemorris.com/vietnam/feed/
    topic: Vietnam practice
  - name: White Collar Criminal Law
    url: https://blogs.duanemorris.com/whitecollarcriminallaw/
    rss: https://blogs.duanemorris.com/whitecollarcriminallaw/feed/
    topic: White collar criminal defense
x-developer-surface: none
x-developer-surface-notes: >-
  Duane Morris LLP publishes no public developer API, SDK, CLI, OpenAPI or
  AsyncAPI specification, JSON Schema, GraphQL endpoint, webhooks, status
  page, or developer portal. The GitHub organization at
  https://github.com/duanemorris exists but holds no public repositories.
  The only machine-readable surfaces produced by the firm are the RSS 2.0
  feeds exposed by its LexBlog-hosted blog network — more than 50 practice
  and industry blogs at blogs.duanemorris.com (and the Duane Morris Institute
  at duanemorrisinstitute.com), each reachable via the standard WordPress
  /feed/ convention. RSS validity has been spot-confirmed on the Class
  Action Defense, Cannabis Industry, Artificial Intelligence, and Duane
  Morris Institute feeds.
maintainers:
  - FN: Kin Lane
    email: kin@apievangelist.com