CIVIL VERDICTS - PREMISES LIABILITY * Estate of Joan DeMarco v. The Marquis - Decedent business tenant of apartment/office complex owner murdered by former employee of defendant in violent assault during office burglary. Plaintiff's estate alleged negligent security theory of liability against defendant. Settlement negotiated with responsible insurance company in excess of One Million Two Hundred Thousand ($1,200,000.00) Dollars prior to trial. * Khaled Bakar v. Home Properties, Inc. - Plaintiff was standing on third floor balcony of friend's apartment owned by defendant, when the floor suddenly collapsed causing plaintiff to fall to ground. Plaintiff sustained fractured ribs, non-displaced tibia fracture and herniated disc, which was treated with physical therapy and multiple epidural injections. Montgomery County jury returned a verdict in the amount of Seven Hundred and Sixty Nine Thousand ($769,000.00) Dollars. Plaintiff filed Motion for Delay Damages which was granted and case was settled for Nine Hundred Thousand ($900,000.00) Dollars. * CIVIL VERDICTS - AUTOMOBILE ACCIDENTS * Riccardo v. Kim - Plaintiff sustained fractured cervical vertebrae at C5-6 level which required two surgeries and metal screws, arising from a two vehicle automobile accident. Out-of-court settlement negotiated with responsible insurance carriers in amount of Four Hundred Thousand ($400,000.00) Dollars prior to trial. * Estate of Robert Kane v. Joseph Falco - Decedent killed while passenger in one-car accident where intoxicated driver lost control of vehicle. Wrongful death claim settlement negotiated with responsible insurance company in the amount of Six Hundred and Sixty Thousand ($660,000.00) Dollars prior to trial. * Vinnie Moss v. Baldi Transportation/Erie Insurance Company - Plaintiff awarded Two Hundred Thirty Five Thousand ($235,000.00) Dollars by jury after trial. Defendant trucking company bankrupt and uninsured. Uninsured motorist claim settlement negotiated with plaintiff's insurance company in the amount of Two Hundred Thousand ($200,00.00) Dollars. * CIVIL VERDICTS - LIQUOR LIABILITY * Gerald & Irene Kane v. Dublin Wine and Spirits and Commonwealth of PA - Plaintiff husband and wife sustained multiple injuries in head-on collision with drunk driver. Husband-plaintiff sustained head injury resulting in brain hemorrhage and coma, with substantial recovery. Wife-plaintiff sustained broken ankle. Out-of-court settlement successfully negotiated against defendants prior to trial. Husband's claim - Two Hundred Forty Thousand ($240,000.00) Dollars. Wife's claim - Ninety Thousand ($90,000.00) Dollars. (Bucks County)* Edward Pisarek v. Adriatric Club - Plaintiff police officer assaulted while on duty by intoxicated bar patron skilled in martial arts. Plaintiff sustained permanent partial hearing loss and multiple lacerations. Non-jury trial verdict in favor of plaintiff and against defendant in amount of One Hundred Fifty Thousand ($150,000.00) Dollars. (Philadelphia County) CIVIL VERDICTS - PRODUCT LIABILITY* Keith Rosenberger v. Galoob Toys, Inc. - Plaintiff sustained temporary partial loss of vision in one eye with increased risk of future glaucoma, when struck in eye by defendants' children's toy, while plaintiff demonstrated newly purchased toy for child. Out-of-court settlement successfully negotiated against defendants in the amount of One Hundred Fifty Thousand ($150,000.00) Dollars prior to trial. (Montgomery County)* Raymond Cost v. Caterpillar, Inc. - Plaintiff sustained partial amputation of his lower leg, when his foot was crushed in an unguarded pinchpoint of rotating couplings inside engine area, while plaintiff was performing maintenance of defendant's heavy trash compactor/metal shearer. Out-of-court settlement successfully negotiated against defendant in the amount of Four Hundred Seventy Five Thousand ($475,000.00) Dollars prior to trial. (Montgomery County)

Our clients can expect that the entire legal team at the law office of McMahon, Lentz & Thompson will work together to ensure that your legal representation is rendered in the most efficient and effective manner. With our team approach, you can be sure that your case will get the personalized, diligent attention it deserves. We truly do care about our clients!

John I. McMahon, Jr. Esquire
During the last twenty five years, John I. McMahon, Jr. has earned a well-documented and unmatched record of exceptional courtroom results throughout Eastern Pennsylvania, in high profile criminal defense cases and serious personal injury claims.

In addition, Mr. McMahon has successfully defended clients in serious criminal cases in both state and federal courts, including Homicide, Sexual Offenses, Theft Offenses, Narcotics, Mail Fraud, Embezzlement, Money Laundering and other serious felonies.

He first honed his formidable skills as a trial lawyer during his three year career as an Assistant District Attorney in Montgomery County where he primarily prosecuted homicide and narcotics cases.

In addition, Mr. McMahon has zealously represented civil personal injury clients in Wrongful Death, Automobile Accident, Premises Liability, Liquor Liability and other serious injury claims in which he has achieved substantial settlements/verdicts, throughout Eastern Pennsylvania.

He is assisted by a highly experienced and competent office staff, as well as a full array of expert consultants as may be required depending on the nature of the particular case. Mr. McMahon is admitted to practice law in the United States District Courts for the Eastern and Middle Districts of Pennsylvania as well as Pennsylvania state court, where he has represented clients in most of the counties in Eastern Pennsylvania.

Erin C. Lentz-McMahon, Esquire

Erin C. Lentz-McMahon has over a decade of legal experience, and aggressively represents her clients in a vast array of family, criminal and personal injury actions.

She received her Juris Doctor from Widener University School of Law in 2005, and graduated cum laude  from Gannon University, a private Catholic school in northwestern Pennsylvania.  Ms. Lentz-McMahon clerked for the Honorable Robert G. Bigham in Adams County, Pennsylvania who handled Family and Orphans’ Court matters, as well as civil matters.

Ms. Lentz-McMahon clerked for the first female elected to the Pennsylvania Supreme Court, Madame Justice Sandra Schultz Newman.  Thereafter, Ms. Lentz-McMahon served as an Assistant District Attorney in Montgomery County in the appellate division.  She joined as a partner at this law office in 2010.  She is licensed both in the Commonwealth of Pennsylvania and the State of New Jersey, and admitted to practice in the Eastern District of Pennsylvania.

Brooks T. Thompson, Esquire

Attorney Brooks Thompson has vigorously represented clients in a wide variety of criminal and civil cases in state and federal court throughout Pennsylvania.

He has obtained Not Guilty verdicts following jury trials on charges including Attempted Murder, Aggravated Assault, Armed Robbery, Unlawful Possession of Firearms, and related offenses. He has handled major criminal cases in which his arguments persuaded judges to throw out illegally obtained evidence, causing the cases to be dismissed.

Mr. Thompson received his Juris Doctor from the Penn State Dickinson School of Law where he focused his studies on criminal law and trial advocacy. During law school, Mr.Thompson worked in the Public Defender’s Office of Clearfield County as a certified legal intern, interned for a Court of Common Pleas Judge where he wrote many legal opinions which were adopted by the court, and later represented indigent clients through a fellowship placement with Legal Aid of Southeastern Pennsylvania, Pottstown office. He joined this firm as an associate in 2011.


Stuart J. Schatz, Esquire
Of Counsel

Mr. Schatz is a highly experienced litigator with a practice that focuses primarily on personal injury cases and family and domestic law. He obtained his Juris Doctor from the University of Baltimore in 1974. Thereafter, Mr. Schatz worked as an Assistant Public Defendant in Bucks County, PA (1977-1979), before moving into private practice with Kramer Kapustin & Schatz (1980-1986). He was subsequently an associate with Solomon, Berschler, & Warren (1985-1991) and shortly thereafter became partner of the firm Solomon, Berschler, Warren, Schatz & Flood (1991-2014). Most recently, Mr. Schatz was associate with Mandrachia Law (1991-2014).

In 2001, Mr. Schatz successfully argued before the Supreme Court, setting new legal precedent in the case of American Red Cross v. W.C.A.B. (Romano), 745 A.2d 78 (Pa. Cmwlth. 2000) aff’d 766 A.2d 328 (Pa. 2001). In that case, the Court held that when an employee sustains a work-related injury as a result of the negligence of an uninsured or underinsured motorist and recovers UM or UIM benefits from his or her own policy, an employer has no right of subrogation against that recovery, because the benefits were not from a third-party, but from the employee’s own motor vehicle policy for which the employee paid the premiums.

Mr. Schatz again successfully argued before the Pennsylvania Supreme Court in 2003 and made new law in the case of Hoffman v. Troncelliti, 839 A.2d 1013 (Pa. Super. 2003). There, the Plaintiff, Sherry Hoffman, owned a car and had selected limited tort coverage. Her mother had full tort coverage. The Court held that in cases where there are two or more conflicting policies, the tort option covering the vehicle in which the party was injured should apply, so long as the injured party is an “insured” under that policy.

Lisa A. Lang, Paralegal

Lisa A. Lang has been employed as a paralegal at McMahon, McMahon and Lentz since 1985. Ms. Lang has a Bachelor of Science degree from West Chester University and later received a Certification in Paralegal Studies from Villanova University.

Ms. Lang has twenty five years experience assisting Mr. McMahon in thousands of serious criminal cases, as well as serious personal injury and wrongful death matters. She has extensive knowledge of civil and criminal procedure in the various county courts in Eastern Pennsylvania.

Ms. Lang is an integral, experienced and highly professional member of the staff of McMahon, McMahon & Lentz.

John I. McMahon, Sr. (1959-2004)

John I. McMahon, Sr., Esquire, graduated from Temple Law School in 1959 and started defending insurance companies in personal injury lawsuits.

Two years later Mr. McMahon started his own private law practice in Montgomery County focusing on representing plaintiffs in serious personal injury claims as well as wrongful death lawsuits

In the mid-seventies, he successfully achieved the largest multi-million dollar settlement ever against Volkswagen of America at the time, arising from a product liability wrongful death lawsuit.

During the 1980’s, Mr. McMahon represented numerous Philadelphia area newscasters, including Larry Kane, Steve Levy, Deborah Knapp, Beverly Williams and Jim O’Brien.

Mr. McMahon remained a busy, active lawyer well into his seventies until his untimely passing in July, 2004 after a courageous four month battle with cancer.