Atty. William D. Longo

Atty. William D. Longo

William Longo is a civil litigator who has tried numerous cases to a verdict in both Pennsylvania and New Jersey since 1990. He came to Margolis Edelstein in 1997.

Philadelphia Philadelphia 36 yrs experience 36 year
Call (215) 931-5861 Book Appointment

Profile Summary

About William D. Longo at a glance

William D. Longo is a Partner based in Philadelphia, Pennsylvania, practicing at Margolis Edelstein. They have 36+ years of legal experience, licensed to practice since 1990. Their practice focuses on product liability and insurance. Admitted to practice in Pennsylvania (1990), New Jersey (1990), United States District Court, Eastern District of Pennsylvania (1990), and United States District Court, Middle District of Pennsylvania (1990). Educated at Dickinson School of Law J.D. (—) and King's College B.S. (—). Recognitions include AV Preeminent. Active member of PADC, Professional Affiliations •Pennsylvania Bar Association •Philadelphia Bar Association •Bucks Bar Association •Philadelphia Association of Defense Counsel. Serands clients in Philadelphia, PA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • William Longo is a civil litigator who has tried numerous cases to a verdict in both Pennsylvania and New Jersey since 1990
  • He came to Margolis Edelstein in 1997
  • Bill’s areas of concentration include Professional Liability (Realtors, Home Inspectors, Appraisers, Dentist), Products Liability and General Liability claims
  • Bill provides Risk Management Seminars to Professionals in the Real Estate Industry and has participated as a Lecturer for Continuing Legal Education Courses throughout Pennsylvania
  • He was recently on the faculty on “Handling the Failure to Disclose Case” for the Pennsylvania Bar Institute
  • Bill is also a certified arbitrator in the Philadelphia and Bucks County Courts of Common Pleas

Honors

•AV Martindale-Hubbell Peer Review Rated Civic & Community Activities: •Habitat for Humanity •Pennridge Fish News and Verdicts: •Summary Judgment - Intermodal Container - Load Shift - Pennsylvania Manufacturer •Summary Judgment - Baling Wire - Wrongful Death - Essex, NJ

Practice Areas Explained

William D. Longo's Areas of Practice

Each practice area below reflects the types of cases William D. Longo handles, with a brief overview of what that area of law covers.

Product Liability

William D. Longo is one of 66,193 product liability attorneys indexed nationally. Browse product liability attorneys in Pennsylvania →

Insurance Law

Insurance attorneys for coverage disputes, bad faith claims, denied claims, and policy disputes.

William D. Longo is one of 121,912 insurance attorneys indexed nationally. Browse insurance attorneys in Pennsylvania →

Jurisdictional Context

Why local counsel matters in Pennsylvania

Practicing law in Pennsylvania. Legal matters in Pennsylvania are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Philadelphia are typically filed in the local municipal court or the appropriate Pennsylvania state district court, depending on subject matter and amount in controversy. An attorney licensed in Pennsylvania brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Pennsylvania courts without local counsel or pro hac vice admission.

Looking for additional Pennsylvania attorneys? Browse all attorneys in Philadelphia or all attorneys in Pennsylvania.

Frequently Asked

Common questions about William D. Longo

Where is William D. Longo's law office located?
William D. Longo's law practice is located in Philadelphia, Pennsylvania. The firm is Margolis Edelstein. You can contact the office directly through this profile page.
What practice areas does William D. Longo handle?
William D. Longo focuses on product liability, insurance. Each practice area listed reflects experience handling cases of that type in Pennsylvania.
How long has William D. Longo practiced law?
William D. Longo has 36+ years of legal experience and has been licensed since 1990.
Where did William D. Longo go to law school?
William D. Longo earned their education at (—); (—).
How can I contact William D. Longo for a consultation?
You can contact William D. Longo directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.
What awards or recognition has William D. Longo received?
William D. Longo's notable recognition includes: AV Preeminent.

Education

Dickinson School of Law J.D.
- In Progress
King's College B.S.
- In Progress

Awards

AV Preeminent

Bar Admissions

Pennsylvania
Admitted: 1990
New Jersey
Admitted: 1990
United States District Court, Eastern District of Pennsylvania
Admitted: 1990
United States District Court, Middle District of Pennsylvania
Admitted: 1990
United States District Court, District of New Jersey
Admitted: 1990
United States Court of Appeals, Third Circuit
Admitted: 1990

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