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Diane Fenner

Diane Fenner

Williams Cedar LLC
  • Products Liability, Medical Malpractice, Workers' Compensation
  • Pennsylvania, Pennsylvania
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Diane has been practicing law since 1983, and has an AV rating from her colleagues, as determined by Martindale-Hubbell. After 4 years at the prestigious Philadelphia-based defense firm of Pepper Hamilton, Diane switched to a practice exclusively devoted to the representation of injured individuals. As such, she has practiced in various areas of personal injury, including medical malpractice, automobile accidents, premises liability, product liability, and workers’ compensation, and has lectured for the American Association of Justice and the Philadelphia Bar Association.

At the present time, Diane is concentrating her law practice in the field of pharmaceutical litigation, where she specializes in the representation of people injured as a result of harmful drugs and medical devices. For the past 15 years, Diane has co-authored the chapter in AAJ’s Litigating Tort Cases entitled “Drugs and Medical Devices,” and was involved extensively in Hormone Therapy (Prempro), Stadol, and Vioxx litigation. Because of her background as a Ph.D. social psychologist, Diane is particularly interested in the marketing aspects of pharmaceutical litigation, as well as settlement negotiation and trial strategy issues.

Diane is a member of the American Association for Justice, the Pennsylvania Association for Justice, and the Philadelphia Bar Association. She is admitted to the Supreme Court of Pennsylvania and the United States District Court for the Eastern District of Pennsylvania.

University of Pennsylvania Law School
J.D. (1983) | law
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Columbia University
Ph.D. (1983) | social psychology
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Professional Experience
Williams Cedar LLC
- Current
specializing in litigation involving dangerous drugs and products
Fenner & Boles
Fenner & Quinn
Adler & Kops
Pepper Hamilton
Professional Associations
Pennsylvania State Bar
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Jurisdictions Admitted to Practice
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  • Free Consultation
  • Contingent Fees
Practice Areas
    Products Liability
    Drugs & Medical Devices, Motor Vehicle Defects, Toxic Torts
    Medical Malpractice
    Birth Injury, Medical Misdiagnosis, Pharmacy Errors, Surgical Errors
    Workers' Compensation
  • English: Spoken, Written
Websites & Blogs
Williams Cedar, LLC Blog
Contact & Map
Williams Cedar LLC
1515 Market Street
Suite 1300
Philadelphia, PA 19102
Telephone: (215) 557-0099
Cell: (484) 716-9087
Fax: (215) 827-5616
New Jersey Office
8 Kings Highway West Suite B
Haddonfield, NJ 08033
Telephone: (856) 470-9777