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John P. Gonzales

Co-Chair, Public Entity & Civil Rights Litigation Practice Group

Portrait of John P. Gonzales

John is a shareholder in the Philadelphia office of Marshall Dennehey and serves as Co-Chair of the Public Entity & Civil Rights Litigation Practice Group. He practices in the areas of civil rights, municipal liability, school claims and employment law.

John has represented police officers and public officials in state and federal court in all aspects of civil rights litigation including claims involving use of force, wrongful arrest and land use. In addition, John has represented public and private employers in wrongful discharge, employment discrimination and defamation claims from administrative proceedings through trial. John has tried dozens of cases in state and federal courts and argued cases before the Third Circuit Court of Appeals.

In addition to his trial work, John has presented numerous seminars to police departments, law firms and government agencies in the areas of police practices, civil rights issues and municipal liability. He has consulted with police departments concerning the development of policies and procedures and provided advice and guidance to employers concerning employment-related matters.

John received his juris doctor from Temple University School of Law, where he was a member of the Moot Court Honor Society, and graduated from the University of Scranton with a Bachelor of Arts in history and philosophy and a Master of Arts in history. He is admitted to practice in Pennsylvania and the U.S. District Courts for the Eastern and Middle Districts of Pennsylvania and the Third Circuit Court of Appeals.

    • Temple University Beasley School of Law (J.D., 1993)
    • University of Scranton
      • B.A., 1989; M.A. 1989
    • Pennsylvania, 1994
    • U.S. District Court Eastern District of Pennsylvania, 1994
    • U.S. District Court Middle District of Pennsylvania, 2000
    • U.S. Court of Appeals 3rd Circuit, 2006
    • AV® Preeminent™ by Martindale-Hubbell®
    • The Best Lawyers in America©, Employment Law – Management (2024-2027)
    • Pennsylvania Super Lawyers (2019-2020, 2023-2026)
    • Montgomery County Bar Association
    • Pennsylvania Bar Association
    • Workers' Compensation Winter Roundup, Graham Company webinar, December 15, 2020
    • Understanding the Debate with the ADA, FMLA and Workers’ Compensation, Marshall Dennehey webinar, October 27, 2020
    • Mitigating the Risk of Workplace Bullying, Marshall Dennehey Workers' Compensation Seminar, October 24, 2019
    • Local Government Immunity in Pennsylvania, Client Seminar, October 2018
    • Deal or No Deal - Improving Your Negotiating Strategy, Philadelphia Law Department, August 2018
    • Legal Updates for Law Enforcement, Pennsylvania Chiefs of Police Association's Centennial Training Education Conference, July 14, 2014
    • Managing a Maturing Workforce: The Legal Perspective, Delaware Valley Trust, June 2014
    • Social Media & Cyber Breaches: the Internet's Impact on Your Business, The Graham Company, co-presenter, May 2014
    • Navigating The Bermuda Triangle: The Intersection of Workers' Compensation, FMLA and ADA, Roadmap to Success - Understanding Workers' Compensation, Marshall Dennehey seminar, October 24, 2013
    • Hot Topics in Employment, Marshall Dennehey / AIG Seminar, Philadelphia, PA, October 10, 2013
    • Land Use Litigation and Liability Issues for Local Government, Delaware Founders Insurance Trust, September 2011
    • Land Use Civil Rights and Avoiding Liability video and webinar, Delaware Valley Insurance Trust, 2009
    • Police Liability Seminar, Delaware Valley Insurance Trust, November 2007
    • Law Enforcement Seminar - Use of Force Issues, Dauphin County, 2006
    • Train the Trainers Program, Municipal Police Officer Education and Training Commission, November 2005
    • Use of Force in Pennsylvania, Lorman Education Services, CLE, February 4, 2005
    • Use of Force in Pennsylvania, Lorman Education Services, CLE, February 6, 2004
    • Tort Claims Act, Delaware Valley Insurance Trust, March 2004
    • Civil Rights Liability, Delaware Valley Insurance Trust, March 2004
    • "Pennsylvania's Emergence Code: An Additional Level of Protection for Municipalities and Their Employees Performing Emergency Services," Defense Digest, Vol. 6, No. 2, April 2000
    • Co-author, "Sex-Based Shift Assignments: Employers May Use Common Sense," Defense Digest, Vol. 2, No. 7, 1996
    • Co-author, "Employment Discrimination Claims: Arbitration Under Collective Bargaining Clauses," Defense Digest, Vol. 2, No. 6, 1996
    • Co-author, "Third Circuit Takes Pennsylvania Beyond 402(A)," Defense Digest, Winter, 1994
    • Defense verdict for local police department in case involving false arrest and malicious prosecution arising out of the misidentification of a suspect in a police lineup.
    • Defense verdict for county employer in case involving Title VII Sex Discrimination in the termination of a county court reporter.
    • Defense verdict for county employer in case involving allegations of sexual harassment and hostile work environment at a county prison.
    • Defense verdict for local police department in case involving allegations of false arrest and excessive force arising out of the arrest of a suspect who allegedly assaulted a police officer during a traffic incident.
    • Successful defense of a local police department in the district court and then on appeal to the Third Circuit in case involving allegations of excessive force in the death of a suspect who was alleged to have died while in custody from compression asphyxia.
    • Successful defense of a local municipality in the district court and then on appeal to the Third Circuit in case involving a land use civil rights claim that a developer's substantive due process rights were violated in the context of zoning and land use decisions by a Board of Supervisors.
    • Defense verdict for county employer in case involving claims of first amendment retaliation by a former deputy chief probation officer.
    • Defense verdict for local police officers accused of wrongfully arresting a husband in a domestic dispute.
    • Defense verdict for township detective accused of racial discrimination and conspiracy by an African American police officer in a failure to hire case.

Results

Dismissal of Police Officers Secured Via Sanctions Imposed

We had our clients dismissed via sanctions imposed. On Jan. 6, 2011, Charles Sample was arrested by officers of the Philadelphia Police Department’s Narcotics Field Unit. The plaintiff alleged the officers seized $40,000 in cash from his vehicle, falsified a search warrant affidavit, disregarded proper procedures and withheld exculpatory evidence, leading to drug charges. The plaintiff entered a guilty plea for probation to avoid a lengthy prison sentence. On Jan. 6, 2017, the court granted the plaintiff’s motion for a new trial based on after-discovered evidence, and the charges were nolle prossed. The plaintiff filed his initial complaint on Jan. 4, 2019, alleging federal civil rights violations under 42 U.S.C. § 1983 and state law claims. Due to related litigation involving the Narcotics Field Unit, the case was placed in suspense on March 10, 2020, and restored to the active docket on Nov. 15, 2023. On April 4, 2024, the plaintiff filed an amended complaint, asserting six causes of action: § 1983 claims for fabrication of evidence, suppression of evidence, malicious prosecution, civil rights conspiracy, municipal liability (against the City of Philadelphia), and state law claims for false arrest, false imprisonment, malicious prosecution and conversion. On Aug. 5, 2025, Judge Gerald J. Pappert of the U.S. District Court for the Eastern District of Pennsylvania dismissed the plaintiff’s claims against the individual police officer defendants under FRCP Rule 37(b) for failure to comply with discovery orders, with prejudice. Applying the Poulis factors, the court found the plaintiff personally responsible for nearly two years of non-communication with his counsel, which prejudiced the police officers by delaying trial preparation and demonstrated a history of dilatoriness without reasonable excuse. Lesser sanctions were deemed ineffective due to the plaintiff’s prolonged unresponsiveness, and the merits of his claims could not be evaluated, rendering this factor neutral. The City’s motion to join the police officers’ sanctions motion was denied, as they did not move to compel discovery or demonstrate the plaintiff’s violation of a related court order. 

Summary Judgment Granted in First Amendment Retaliation Claim Case

We were granted summary judgment in the dismissal of a First Amendment retaliation claim. The case was brought against our client, the borough manager, as well as the borough and several other of its employees. The plaintiff worked as a trash man in the Streets Department. With regard to the borough manager, the plaintiff alleged First Amendment retaliation under 42 U.S.C. § 1983, claiming a hostile work environment due to racial slurs and discriminatory behavior by coworkers and supervisors. He alleged that he reported these issues to his supervisor and the borough manager, but he felt ignored or silenced. After publicly addressing the alleged racism at a February 2024 Town Council meeting, the plaintiff was terminated a week later following a council vote. The plaintiff filed an EEOC charge and this lawsuit, alleging his termination was retaliatory and discriminatory. We were successful in having the retaliation claims against the borough manager dismissed via summary judgement, but the co-defendants remain active.

Firm Highlights

Result

No-Cause Jury Verdict Secured in Wrongful Death Trial

We successfully obtained a no-cause jury verdict in a 13-day wrongful death trial. The decedent, a 59-year-old man, was admitted to the emergency room on February 15, 2019, with complaints of abdominal pain, decreased appetite, and constipation, despite the use of laxatives. The patient did not complain of any nausea, vomiting, or diarrhea. He had a significant medical history including diabetes, hypertension, prior coronary artery stenting, morbid obesity (with past gastric bypass surgery), longstanding ventral hernia, and back pain. A CT scan revealed multiple hernias and a potential closed-loop bowel obstruction, leading to a surgery consultation. Our client, an emergency general surgeon, interpreted that the patient did not have a closed loop or any significant obstruction and recommended non-surgical management. The patient was approved to have clear liquids, and had a vomiting incident shortly after, but our client was not notified. The patient was returned to NPO status, and after improving overnight, he was returned to “clears” and additional medical and renal consults were ordered. Our client did not receive any communications from the residents/nurses of any changes in the patient’s condition. On February 18, 2019, two rapid responses were called due to increased heart rate and vomiting. It is believed that the vomiting resulted in aspiration, causing sepsis, ultimately leading to the patient’s death. During the trial, the plaintiff’s sole medical expert highlighted imaging on the wrong hernia, which called into question all of his opinions in the case. We made key objections related to the expert testimony, limiting what the allegations were, and preventing new allegations from being made. After approximately two and a half hours of deliberating, the jury returned a no-cause verdict. 

News

106 Marshall Dennehey Attorneys Recognized in the 2027 Editions of The Best Lawyers in America® and the Best Lawyers: Ones to Watch® in America

Marshall Dennehey is proud to highlight the firm’s 106 attorneys who have been recognized in the 2027 editions of The Best Lawyers in America® and the Best Lawyers: Ones to Watch® in America. Less than 6% of all practicing lawyers in the U.S. were selected by their peers for this recognition. Additionally, four of the firm’s attorneys received the Best Lawyers® 2027 “Lawyer of the Year” awards in their respective practice areas and demographic regions. Since it was first published in 1983, Best Lawyers® has become universally regarded as the definitive guide to legal excellence. Best Lawyers lists are compiled based on an exhaustive peer-review evaluation. For more information, please visit https://www.bestlawyers.com/. OUR 2027 LAWYERS OF THE YEAR Harrisburg, PA Christopher Reeser, Personal Injury Litigation - Defendants Kacey Wiedt, Workers Compensation Law - Employers Roseland, NJ Justin F. Johnson, Medical Malpractice Law - Defendants Leonard Leicht, Personal Injury Litigation - Defendants   OUR 2026 BEST LAWYERS IN AMERICA Philadelphia, PA Nicholas D. Bowers, Personal Injury Litigation - Defendants Josh J. T. Byrne, Professional Malpractice Law - Defendants Jefferey J. Chomko, Insurance Law James H. Cole, Insurance Law John J. Delany III, Personal Injury Litigation - Defendants Laurianne Falcone, Personal Injury Litigation - Defendants John P. Gonzales, Employment Law - Management John Hare, Appellate Practice Daniel D. Krebbs, Personal Injury Litigation - Defendants Michele Punturi, Workers' Compensation Law - Employers Bradley D. Remick, Product Liability Litigation - Defendants Andrea Cicero Rock, Workers' Compensation Law - Employers Robin M. Romano, Workers' Compensation Law - Employers Daniel J. Ryan, Jr., Personal Injury Litigation - Defendants Gary M. Samms, Professional Malpractice Law - Defendants Christopher N. Santoro, Personal Injury Litigation – Defendants; Product Liability Litigation -Defendants Josh D. Scheets, Personal Injury Litigation - Defendants Robert P. Schenk, Workers' Compensation Law - Employers Robert E. Smith, Insurance Law Robin Snyder, Litigation - Health Care Michael L. Turner, Commercial Litigation; Criminal Defense: White-Collar; Mass Tort Litigation / Class Actions - Defendants Claire Breaux Ventola, Product Liability Litigation - Defendants Pittsburgh, PA Melissa Devich Cochran, Commercial Litigation; Mass Tort Litigation / Class Actions – Defendants; Product Liability Litigation - Defendants  John F. Deasy, Personal Injury Litigation – Defendants; Product Liability Litigation - Defendants Daniel W. Deitrick, Workers' Compensation Law - Employers Douglas C. LaSota, Litigation - Construction; Mass Tort Litigation / Class Actions - Defendants Joseph V. Lesinski, Product Liability Litigation – Defendants   Christian D. Marquis, Personal Injury Litigation - Defendants Patricia A. Monahan, Insurance Law; Litigation - Insurance Patrick T. Reilly, Commercial Litigation; Mass Tort Litigation / Class Actions – Defendants; Product Liability Litigation - Defendants Brett C. Shear, Medical Malpractice Law - Defendants Teresa O. Sirianni, Education Law; Employment Law – Management; Litigation - Labor and Employment Stuart Sostmann, Product Liability Litigation – Defendants Danielle M. Vugrinovich, Mass Tort Litigation / Class Actions - Defendants Scranton, PA Sarah E. Argo, Litigation - Insurance Michael J. Connolly, Personal Injury Litigation – Defendants; Professional Malpractice Law - Defendants Matthew Keris, Litigation - Health Care; Medical Malpractice Law - Defendants John T. McGrath, Jr., Insurance Law; Medical Malpractice Law – Defendants; Product Liability Litigation - Defendants William J. McPartland, Insurance Law John R. Nealon, Product Liability Litigation - Defendants Victoria Scanlon, Health Care Law; Litigation - Health Care; Medical Malpractice Law - Defendants Michael A. Sebastian, Workers' Compensation Law - Employers Thomas A. Specht, Insurance Law; Litigation - Insurance Suzanne Tighe, Litigation Insurance Harrisburg , PA Casey Alan Coyle, Administrative/Regulatory Law; Appellate Practice; Commercial Litigation Brittany E. Bakshi, Personal Injury Litigation - Defendants Shannon P. Fellin, Workers' Compensation Law - Employers Allison Krupp, Insurance Law John R. Ninosky, Litigation – Insurance; Personal Injury Litigation - Defendants Christopher Reeser, Personal Injury Litigation - Defendants Kacey Wiedt, Workers' Compensation Law – Employers King of Prussia, PA  Michael L. Detweiler, Construction Law Joseph L. Hoynoski III, Medical Malpractice Law - Defendants Gregory J. Kelley, Construction Law, Litigation - Construction Anthony Natale III, Workers' Compensation Law - Employers Francis X. Wickersham, Workers' Compensation Law - Employers A. Judd Woytek, Workers' Compensation Law – Employers Erie, PA Patrick M. Carey, Personal Injury Litigation - Defendants Joel M. Snavely, Health Care Law; Insurance Law New Haven, CT Michael Wrona, Commercial Litigation, Litigation - Bankruptcy  Mount Laurel, NJ David D. Blake, Litigation - Insurance Barbara Davis, Personal Injury Litigation - Defendants Lynne Nahmani, Litigation - Health Care John H. Osorio, Personal Injury Litigation - Defendants John L. Slimm, Legal Malpractice Law – Defendants; Professional Malpractice Law – Defendants Roseland, NJ Robert T. Evers, Medical Malpractice Law - Defendants Justin F. Johnson, Medical Malpractice Law - Defendants Julia Klubenspies, Medical Malpractice Law - Defendants Leonard C. Leicht, Personal Injury Litigation - Defendants Patricia M. McDonagh, Appellate Practice Sunny Sparano, Litigation - Construction Randall S. Watts, Health Care Law New York, NY Tonya M. Lindsey, Medical Malpractice Law - Defendants Tampa, FL Michael Archibald, Personal Injury Litigation - Defendants Lindsay G. McCormick, Litigation – Construction Orlando, FL Thomas F. Brown, Personal Injury Litigation - Defendants Dante C. Rohr, Commercial Litigation Fort Lauderdale, FL Kimberly Kanoff Berman, Appellate Practice Patrick M. Delong, Personal Injury Litigation – Defendants Jacksonville, FL  Heather Byrer Carbone, Workers' Compensation Law - Employers Linda Wagner Farrell, Workers' Compensation Law - Employers Elizabeth B. Ferguson, Litigation - Construction James P. Hanratty, Personal Injury Litigation – Defendants Wilmington, DE Sarah B. Cole, Litigation - Insurance Benjamin K. Durstein, Workers' Compensation Law - Employers Maria R. Granaudo, Medical Malpractice Law - Defendants  Keri L. Morris-Johnston, Workers' Compensation Law - Employers Cincinnati, OH Timothy B. Schenkel, Personal Injury Litigation - Defendants David E. Williamson, Personal Injury Litigation - Defendants Cleveland, OH Vincent E. Cononico, Litigation – Insurance, Personal Injury Litigation - Defendants Jillian L. Dinehart, Personal Injury Litigation - Defendants David J. Fagnilli, Insurance Law Jason P. Ferrante, Health Care Law, Litigation - Health Care Andrew H. Isakoff, Transportation Law Leslie M. Jenny, Litigation - Health Care; Medical Malpractice Law – Defendant OUR 2026 BEST LAWYERS: ONES TO WATCH Jacksonville, FL Sean J. Reeves, Personal Injury Litigation – Defendants; Product Liability Litigation - Defendants Orlando, FL Carolin A. Pacheco, Insurance Law Mount Laurel Stacey Gorin, Insurance Law Melville, NY Kimberly Gitlin, Personal Injury Litigation – Defendants Matthew A. Gray, Insurance Law; Personal Injury Litigation - Defendants Philadelphia, PA Holli K. Archer, Health Care Law; Medical Malpractice Law – Defendants; Professional Malpractice Law Emily Pritchyk, Commercial Litigation; Product Liability Litigation – Defendants Pittsburgh, PA Taylor E. Kosko, Mass Tort Litigation / Class Actions – Defendants; Personal Injury Litigation - Defendants Alana Staniszewski, Workers' Compensation Law - Employers Michael D. Winsko, Product Liability Litigation – Defendants; Transportation Law King of Prussia, PA Richard Lechette, Commercial Litigation; Insurance Law, Personal Injury Litigation – Defendants

Thought Leadership

Pennsylvania Superior Court Reaffirms Liberal Pleading Standard in Medical Malpractice Actions

Legal Roundup: Pennsylvania The Pennsylvania Superior Court has reinforced a broader fact-pleading approach that may make it more difficult for health care defendants to obtain dismissal at the preliminary objection stage. In DaSilva v. Abington Memorial Hospital, the court held that the plaintiffs’ second amended complaint satisfied Pennsylvania’s fact‑pleading requirements despite the absence of individually named negligent actors. In DaSilva, the plaintiffs filed a second amended complaint alleging that Abington Memorial Hospital was directly and vicariously negligent after the patient, who was experiencing a mental health crisis, was left unattended by hospital staff, exited the emergency department, and was struck by a vehicle, suffering serious injuries. The trial court sustained the hospital’s preliminary objections and dismissed the complaint with prejudice, stating plaintiffs “failed to plead any material factual allegations in support of their claims of negligence [and] set forth vague allegations of negligence and unidentified agency.” Id. at *5. The plaintiffs appealed. On appeal, the Superior Court reversed, holding that the complaint sufficiently pled negligence and vicarious liability claims under Pa.R.C.P. 1019(a). The court concluded that allegations describing the patient’s condition, the hospital’s awareness of that condition, and the alleged failure to monitor or prevent elopement were adequate to satisfy Pennsylvania’s pleading requirements. Significantly, the court rejected the hospital’s argument that the complaint failed because it did not identify the specific employees responsible for the alleged negligence. Instead, the court found that generalized references to “emergency room staff” were sufficient to place the hospital on notice of the claims because “the names of those who performed services for the plaintiff are known to the defendant or can be ascertained during discovery.” Id. at *12 (citing Est. of Denmark ex rel. Hurst v. Williams, 117 A.3d 300, 307 (Pa. Super. 2015)). The effect of DaSilva is that plaintiffs may proceed past the pleading stage with relatively generalized allegations, particularly in cases involving institutional defendants where relevant details are uniquely within the defendant’s control. As a result, health care defendants should anticipate that challenges to claim sufficiency may be resolved in the later stages of litigation, including discovery and summary judgment.

Thought Leadership

The Ohio Supreme Court Extends Sham-Affidavit Rule to Contradictory Expert Reports

Legal Roundup: Ohio In its June 23, 2026, decision in Moore v. Mercy Medical Center, the Ohio Supreme Court upheld a trial court’s decision to strike an expert witness’s affidavit that contradicted the opinions expressed in the expert’s prior report. This case pertains to allegations of medical malpractice after plaintiff Cheri Moore gave birth to an infant in respiratory distress who required intubation. Moore alleged that a delay in ordering an emergency cesarean section resulted in the need for intubation, causing her child’s injuries. Specifically, Moore sued Dr. Meniru, who completed his first shift at 7:00 a.m. on May 28, 2015, and did not resume treating Moore until 7:00 a.m. on May 29, 2015. One of Moore’s expert witnesses authored a report stating that the doctors, including Dr. Meniru, deviated from the standard of care by not advocating for a cesarean section in the evening of May 28, 2015. Based on this report, Dr. Meniru moved for summary judgment, arguing that the alleged breach occurred during a period when he was not on duty. In response to the summary judgment motion, the plaintiff filed an affidavit from the same expert. Although the expert expressly incorporated his previous report into his affidavit, he also offered an additional opinion: that Dr. Meniru breached the standard of care by failing to begin a cesarean section within 30 minutes of receiving reports of fetal distress. Dr. Meniru filed a motion to strike the expert’s affidavit, arguing that it contradicted the opinions set forth in his prior report in violation of the sham-affidavit rule. The sham-affidavit rule applies to “a contradictory affidavit that indicates only that the affiant cannot maintain a consistent story, or is willing to offer a statement solely for the purpose of defeating summary judgment”. Moore, supra, at ¶ 19, citing Pettiford v. Aggarwal, 126 Ohio St.3d 413, 2010-Ohio-3237. The trial court granted both the motion to strike and the motion for summary judgment, and the Fifth District affirmed. The Ohio Supreme Court accepted two questions of law: (1) whether the sham-affidavit rule applies when the sworn testimony contradicts prior unsworn statements; and (2) whether an inconsistency within the affidavit goes to credibility or admissibility, justifying an order striking the affidavit. Previous rulings by the Ohio Supreme Court regarding the sham-affidavit rule have pertained to contradictions between an affidavit and sworn deposition testimony. See, e.g., Byrd v. Smith, 2006- Ohio-3455, 110 Ohio St.3d 24, 850 N.E.2d 47. However, here, the Court was asked to apply the same rule to contradictions between a sworn affidavit and an unsworn expert report. The Court held that, because Moore’s expert incorporated his prior report into his affidavit, he effectively adopted the report as part of his sworn testimony.