Marshall Dennehey

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  • Established in 1962
  • Firm Size 487
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    • #30 in weekly profile views out of 314,301 total law firms Overall
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About this firm

Marshall Dennehey, founded in 1962, has realized substantial growth in response to our continually expanding client base.

We are a defense firm, and our professional practices encompass a wide spectrum of litigation matters.

We are 500 attorneys strong and have 20 offices strategically located in Pennsylvania, New Jersey, Delaware, Ohio, Florida, and New York.

This distribution of attorneys and offices provides our clients with access to statewide or regional representation coupled with strong, accessible, and experienced centralized management.

We are proud of the remarkable level of our internal stability, ensuring file handling continuity.

Surveys of the nation's largest firms consistently show our firm to be a leader in minority hiring and advancement.

Our expertise is evidenced by the fact that many of our attorneys have had books, chapter contributions, monographs, and articles published in their practice areas.

The members of our firm are quite active and play leadership roles in numerous professional, charitable, community, and business associations.

We are on the cutting-edge of alternative billing arrangements.

Inquiries concerning our firm should be directed to our President and CEO, G. Mark Thompson, Esquire, whose direct dial number is (215) 575-3570. His fax number is (215) 575-0856, and his e-mail address is [email protected]. His address is 2000 Market Street, Suite 2300, Philadelphia, PA 19103.

Practice & Industry Groups

Specific Practice Area and Industry Group Details across multiple offices:

Areas of Practice (49)

  • Defense Litigation Practice
  • State Government Law
  • Federal Practice
  • Administrative Agency Practice
  • Amusement Park
  • Sports Law
  • Entertainment Law
  • Appellate Advocacy
  • Architectural Law
  • Engineering
  • Automobile Liability
  • Automotive Products Liability
  • Aviation Law
  • Insurance Bad Faith
  • Commercial Litigation
  • Construction Litigation
  • Employment Law
  • Environmental Law
  • Toxic Torts
  • Fraud
  • General Liability
  • Health Care Liability
  • Health Law
  • Insurance Coverage
  • Insurance Law
  • Intellectual Property
  • Life
  • Disability Benefits
  • Liquor Liability
  • Long-Term Care Liability
  • Maritime Law
  • Media Law
  • Drug And Medical Device Litigation
  • Pharmaceutical
  • Medical Malpractice
  • Municipal Liability
  • Civil Rights
  • Products Liability
  • Professional Malpractice
  • Property Damage
  • Real Estate E&O
  • Retail Liability
  • Securities
  • Investments
  • Special Investigations Litigation
  • Technology Law
  • Transportation
  • Trucking Litigation
  • Workers' Compensation

People (487)

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Peer Reviews

4.6/5.0 (1019 reviews)
  • Legal Knowledge

    4.6/5.0
  • Analytical Capability

    4.6/5.0
  • Judgment

    4.6/5.0
  • Communication

    4.6/5.0
  • Legal Experience

    4.6/5.0
Peer reviews submitted prior to 2008 are not displayed.

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Diversity

Marshall Dennehey has long been committed to diversity and inclusion with a commitment that starts at the top. Our current Executive Committee members, G. Mark Thompson, Howard P. Dwoskin and Craig S. Hudson, as well as our past leadership, have set the tone on this issue by clearly and consistently emphasizing that a diverse and inclusive environment is intertwined with the success of the firm.

Diversity means more to us than ethnic diversity, and we strive to make our firm a place where ethnic minorities, women, LGBTQ+ individuals, neurodiverse people and those with physical disabilities can succeed. We have long supported the Legal Clinic for the Disabled in Philadelphia, with two of our attorneys serving on its Board of Directors over the last few years. We are constant in our efforts to retain and grow our diverse population as that strengthens our organization. In 2019 we received a Diversity & Inclusion Award from Liberty Mutual Insurance in recognition of these efforts.

Our history of promoting minority attorneys goes back a generation to when Hiliary Holloway became the firm’s first African-American shareholder in 1990. Presently, we have several minority attorneys who hold positions of senior leadership at the firm, including Michael Turner and Kevin Hexstall who are members of our Board of Directors. We actively seek to hire or promote minorities across professional and support staff as well. The directors of our IT and HR Departments are African-American women, and professionals of other ethnic backgrounds serve as managers and supervisors across many administrative departments of the firm.

We have a 10-person Diversity, Equity & Inclusion Committee that has set into place a number of initiatives that assist in both hiring and retaining attorneys of color. We have a mentoring system in place where our minority shareholders reach out to our younger minority associates to provide them with support, counsel and encouragement, that can make a significant difference in their professional progression.

In addition to mentorship, we hold an annual meeting and dinner in our Philadelphia headquarters office for attorneys of color. Attorneys from all of our 20 offices attend this event (virtually during this pandemic) where educational seminars, specifically designed to assist those of color to thrive in a majority environment, are given. These seminars are led by internal and external speakers. The event concludes with a dinner that focuses on camaraderie and making horizontal connections within the greater firm for an added layer of encouragement and support.

Throughout the year there are opportunities for smaller groupings of minority attorneys, based on geography, to get together and meet with each other. Some of these events are attended by the firm’s Executive Committee, which recognizes how important it is for these groups to be able to spend time with firm leadership. The firm also participates in minority job fairs and strives to identify minority attorneys and law students who are interested in litigation careers.

We are proud to support our attorneys’ participation in affinity groups that will further their professional development and growth. Minority attorneys at Marshall Dennehey are members of, and participate in, numerous minority organizations, including the National Bar Association (African-American attorneys), the National Asian Pacific American Bar Association, the National Hispanic Bar Association, the Barristers' Association of Philadelphia (membership primarily made up of African-American attorneys practicing in the Philadelphia region), the South Asian Bar Association of Philadelphia, the Asian American Bar Association of the Delaware Valley (membership is primarily made up of Asian American attorneys practicing in the Philadelphia region), the Hispanic Bar Association of Pennsylvania and the Tampa Bay Hispanic Bar Association. Additionally, minority attorneys serve on minority and diversity committees and subcommittees of various national and local professional organizations.

Recent Recognition:

  • The American Lawyer 2020 A-List, Female Equity Partner Scorecard, Ranked #3 among the Am Law 200
  • 2019 Diversity and Inclusion Award from Liberty Mutual Insurance
  • 2019 Minority Business Leaders Award, Philadelphia Business Journal—Niki T. Ingram, recipient
  • Law360’s 2019 Glass Ceiling Report, Best Law Firms for Female Partners – we ranked #2 among law firms with 300-599 attorneys
  • Women Inc. – Top 100 Law Firms for Women, 2019
  • National Law Journal’s 2019 Women’s Scorecard – we placed in the top 12% of law firms recognized
  • Honor Roll of Legal Organizations Welcoming to Women Professionals – Pennsylvania Bar Association, 2014
  1. Number of Associates who are...

    • Non-minority Males 84
    • Minority Males 15
    • Non-minority Females 81
    • Minority Females 20
  2. Number of Administrative Professionals who are...

    • Non-minority Males 0
    • Minority Males 0
    • Non-minority Females 26
    • Minority Females 4
  3. Number of Paralegals who are...

    • Non-minority Males 7
    • Minority Males 2
    • Non-minority Females 73
    • Minority Females 9
  4. Number of Other Lawyers who are...

    • Non-minority Males 0
    • Minority Males 0
    • Non-minority Females 0
    • Minority Females 0
  5. Number of Of Counsel who are...

    • Non-minority Males 5
    • Minority Males 0
    • Non-minority Females 0
    • Minority Females 0
  6. Litigation eDiscovery Best Practices

    • Does the firm have an established eDiscovery Committee? Yes
    • Does your firm have any educational programs designed to address the changing federal rules of civil procedure? Yes
    • Does your firm have a standardized protocol to guide client data collection? (i.e. Maintaining chain of custody, utilizing forensically sound procedures) Yes
    • Does the firm have a standardized protocol to guide processing clients' edata? (i.e. all data produced in PDF, meta data preserved?) Yes
    • Does the firm have a standardized approach for document reviews across practice groups (i.e. established protocol for eDiscovery review depending on the needs of the case) Yes
  7. Litigation General Best Practices

    • Does the firm have a formalized new associate litigation training/mentoring program? Yes
    • Does the firm's litigation department have a structured approach to early case assessment? For example: Does your firm implement a standard approach to determine risks and strengths early in a case to assess trial or settlement options? Yes
    • Does the firm have an established records management team to assist clients with records retention, compliance and litigation preparedness? Yes
  8. Number of Human Resources Professionals who are...

    • Non-minority Males 1
    • Minority Males 0
    • Non-minority Females 4
    • Minority Females 0
  9. Number of Finance Professionals who are...

    • Non-minority Males 14
    • Minority Males 2
    • Non-minority Females 37
    • Minority Females 13
  10. Number of Librarians who are...

    • Non-minority Males 1
    • Minority Males 0
    • Non-minority Females 4
    • Minority Females 3
  11. Vendor Management

    • Does the firm have preferred vendor relationships? Yes
  12. Knowledge Management

    • Does the firm have a knowledge management program? Yes
  13. Disaster Recovery

    • Does the firm have a disaster recovery plan in place? Yes
  14. Number of Partners who are...

    • Non-minority Males 208
    • Minority Males 8
    • Non-minority Females 57
    • Minority Females 4
  15. Matter Budgeting and Financial Management

    • Does the firm establish formal budgets for client engagements? Yes
    • Are bills submitted electronically? Yes
  16. Number of Technology Professionals who are...

    • Non-minority Males 19
    • Minority Males 7
    • Non-minority Females 6
    • Minority Females 6
  17. Number of Marketing Professionals who are...

    • Non-minority Males 1
    • Minority Males 0
    • Non-minority Females 6
    • Minority Females 0

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