About Marc Weingarten

Marc P. Weingarten joined Locks Law Firm in 1978 and became a partner in 1983, previously serving as a law clerk from 1976 to 1978. His practice focuses on complex personal injury litigation, including asbestos and mesothelioma, dangerous drugs and devices, defective products, medical malpractice, and consumer class actions. He has conducted over 100 jury and non-jury trials and has led asbestos property damage claims on behalf of multiple school districts and counties. Weingarten has published more than 50 articles and lectured at more than 60 seminars in the United States and internationally.

He serves on the Board of Governors of the American Association for Justice and has held the Pennsylvania Super Lawyer designation continuously since 2005. He has maintained National Board of Trial Advocacy certification since 1988. He is admitted in Pennsylvania, New York, and Kentucky, as well as the United States Supreme Court and multiple federal circuit and district courts.

Proven verdicts and settlements at Locks Law Firm

These results are credited to Locks Law Firm. A result appears under an attorney's own name only when a published source names them as counsel on the case.

A Philadelphia jury awarded $725.5 million to former Mobil service station mechanic Paul Gill, who developed acute myeloid leukemia after years of cleaning car parts with benzene-containing gasoline and solvents, in what was reported as the largest benzene verdict in U.S. history; the court later added over $90 million in delay damages while ExxonMobil's appeal remains pending.

Philadelphia Court of Common Pleas, Pennsylvania · 2024Product LiabilityRead the full story →

In 1972, an eight-year-old girl spent months in her family's Montgomery County, Maryland basement while her father applied and sanded a Georgia-Pacific joint compound during a home renovation. She developed mesothelioma decades later and died at 34, shortly after a jury awarded her and her husband $9,188,000, including $4,800,000 in non-economic damages. Georgia-Pacific appealed on causation and on whether Maryland's 1986 cap on non-economic damages limited the award. The Court of Special Appeals affirmed, and the Court of Appeals of Maryland affirmed again on June 11, 2002, holding that the cap did not apply because her exposure ended before the cap took effect.

Circuit Court for Montgomery County, Maryland (affirmed by the Court of Appeals of Maryland) · 2002Product LiabilityRead the full story →
$2.31 million

A Philadelphia jury found Trans-Fleet Concrete, Inc. answerable for a concrete pump truck operator who forced a clogged hose clear under pressure instead of shutting the pump down, as he had done twice earlier that day. The hose whipped, struck concrete worker Hildo F. DeFranca in the head, and knocked him nine feet off a form wall into an unfinished basement at a Perkasie, Pennsylvania job site. DeFranca was knocked unconscious and sustained a mild traumatic brain injury, a T11 compression fracture and an aggravation of degenerative disc disease, and he did not return to work. In November 2013 the jury awarded him $2,000,000 and awarded his wife, Maria DeFranca, $250,000 for loss of consortium; the trial court added $63,590.62 in delay damages and entered judgment for $2,313,590.62. The Superior Court of Pennsylvania affirmed that judgment in January 2016.

Court of Common Pleas of Philadelphia County, Pennsylvania (affirmed by the Superior Court of Pennsylvania) · 2014Workplace InjuryRead the full story →

Prior results do not guarantee a similar outcome. Each case is unique and depends on its own facts.

Practice areas

Education

Villanova University School of Law
J.D., 1976
Temple University
Undergraduate, 1973

Bar admissions & credentials

State Bar of Pennsylvania
State Bar of New York
State Bar of Kentucky

Other attorneys at Locks Law Firm

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Proven verdicts and settlements from other Philadelphia firms

Kline & Specter, PC
Kline & Specter, PC
$4.85 Billion Vioxx MDL Settlement for Heart-Attack and Stroke Victims
Saltz Mongeluzzi & Bendesky
Saltz Mongeluzzi & Bendesky
$1.02 billion · Champlain Towers Collapse: $1.021 Billion for 98 Victims in Under a Year
Feldman Shepherd Wohlgelernter Tanner Weinstock Dodig
Feldman Shepherd Wohlgelernter Tanner Weinstock Dodig
$160 million · U-Haul Pays $160 Million After Overfilled Propane Tank Kills Food Truck Owner and Her Daughter
Ross Feller Casey
Ross Feller Casey
$85 Million Verdict for Penn Med Student Who Fell 18 Feet Into Open Center City Manhole
Anapol Weiss
Anapol Weiss
$1.6 billion · 104 Women Win $1.6 Billion Against Long Island Pediatrician Stuart Copperman

Prior results do not guarantee a similar outcome. Each case is unique and depends on its own facts.