About Christian D. Marquis

Christian's practice includes the defense of professionals, public entities, police officers and public officials. He has handled numerous cases defending public entities and public officials in matters involving general negligence and intentional tort claims, land use and zoning issues including municipal statutory appeals, mandamus and inverse condemnation claims, and administrative regulatory issues. He also defends public entities, public officials and police officers in civil rights actions including land use and zoning denials, unlawful use of force, wrongful arrest and malicious prosecution claims, and also wrongful termination and discrimination claims.

Christian has significant experience representing architects and engineers, construction contractors, home and code inspectors, real estate agents and other professionals in the defense of professional and general negligence, construction injuries and accidents, construction defect and breach of contract claims. He also defends clients in personal injury, commercial, environmental and toxic tort litigation matters, more recently surrounding fracking related to natural gas drilling. Christian has tried and handled cases in state and federal courts.

In 1995, Christian graduated from St. Vincent College with a Bachelor of Arts degree in mathematics. In 1996, he graduated from the Pennsylvania State University with a Bachelor of Science degree in chemical engineering. He then earned his juris doctor from the New England School of Law, Boston, Massachusetts, in 1999.

Honors & awards

AV Preeminent by Martindale-Hubbell

The Best Lawyers in America, 'Lawyer of the Year,' Pittsburgh, Personal Injury Litigation - Defendant
2019

The Best Lawyers in America, Litigation - Municipal; Personal Injury Litigation - Defendants
2014-2026

Pennsylvania Super Lawyer Rising Star
2005-2006

Year joined

2001

Results

Summary Judgment Obtained for School District in Slip-and-Fall Case

Public Entity & Civil Rights Litigation
December 18, 2023

We secured summary judgment on behalf of a school district in Fayette County, Pennsylvania. The plaintiff alleged he sustained a concussion as a result of a fall from a loading dock when making a delivery to a middle school in the school district. He argued that the loading dock was dangerous due to inappropriate depth, causing boxes on his hand truck to strike a wall, thus pushing him off of the loading dock. The court concluded that, because of the plaintiff’s prior uneventful encounters with the loading dock, the plaintiff was aware of the intricacies of the loading dock.

Successful appeal of summary judgment in favor of insurer.

Appellate Advocacy & Post-Trial Practice
Insurance Services - Coverage & Bad Faith Litigation
December 6, 2022

We successfully appealed a summary judgment in favor of an insurance client that had been sued by another insurance carrier for more than $1.6 million in damages arising out of a fire loss to an insured auto repair facility. The opposing insurance company had paid $1.6 million in damages and intended to pursue a product liability claim against a vehicle manufacturer, alleging a defectively manufactured vehicle had caused the fire. Our client insured the vehicle that was allegedly defective.

Promissory estoppel claim does not survive summary judgment.

Insurance Services - Coverage & Bad Faith Litigation
February 16, 2022

We obtained summary judgment for an insurance carrier client that had been sued by another insurance carrier for more than $1.6M in damages arising out of a fire loss. The opposing insurance company had paid $1.6M in damages and intended to pursue a product liability claim against a vehicle manufacturer, alleging that a defectively manufactured vehicle had caused the fire to an auto repair facility. Our client insured the vehicle that was allegedly defective.

Federal claims against borough and its employees dismissed.

Public Entity & Civil Rights Litigation
December 2, 2021

Our attorneys obtained judgment in favor of a local borough and its employees/agents following numerous rounds of motions to dismiss in the Western District. The plaintiff, a construction contractor, brought suit alleging the borough violated its constitutional civil rights by failing to issue it a grading permit in the time it perceived as reasonable. The matter is more generally described as a land use dispute, involving the plaintiff’s excessive dumping and destruction of a local sewer line, thus jeopardizing the health and safety of the local residents.

Thought Leadership

98 Marshall Dennehey Attorneys Recognized in the 2026 Editions of The Best Lawyers in America and the Best Lawyers: Ones to Watch in America

August 20, 2025
Marshall Dennehey is proud to highlight the firm’s 98 attorneys who have been recognized in the 2026 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.

Taking vs. Tort: Which Is It in Relation to Sanitary Sewer Overflows?

Pittsburgh
Public Entity & Civil Rights Litigation
March 1, 2021
Defense Digest, Vol. 27, No.

 

Awards

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Services

Areas of Law

  • Other 4
    • Public Entity & Civil Rights Litigation
    • Miscellaneous Professional Liability
    • Automobile Liability
    • Real Estate E&O Liability

Practice Details

  • Firm Information
    Position
    Shareholder
    Firm Name
    Marshall Dennehey
  • Representative Cases & Transactions
    Cases
    Significant Representative Matters: After the completion of discovery, successfully obtained settlement of less than $42,000 on behalf of a police department
    its officer arising out of a family dispute where seven family members filed Section 1983 civil rights claims alleging malicious
    retaliatory prosecution where the initial dem
    was over $750,000.
    In a case where a plaintiff filed a Section 1983 civil rights claim based on alleged unlawful excessive use of force where a police canine, upon the comm
    of its controlling officer, grabbed the plaintiff's abdomen, taking him to the ground
    resulting in puncture wounds. Obtained a settlement of $20,000 where the plaintiff's dem
    was $250,000.
    Currently h
    ling a case on behalf of a roofing contractor where the plaintiff school district is alleging against multiple parties that the roof was improperly constructed, resulting in roof leakage associated damages in excess of $600,000.
    Currently h
    ling a case on behalf of a civil engineering
    surveying firm resulting from an allegedly improperly designed storm water management system associated with a l
    development plan. Decedent's estate has raised claims against multiple parties that storm water drainage formed ice on a state road, causing decedent's accident.
    Obtained summary judgment in favor of a municipal authority wherein plaintiffs claimed damages in excess of $75,000 as a result of a l
    slide that impacted their property allegedly as a result of a defective sanitary sewer line
    corresponding trenching.
    Obtained summary judgment in favor of a township wherein a plaintiff alleged that she sustained various personal injuries as a result of a motor vehicle versus tractor trailer accident that was allegedly caused by a defective traffic signal.
    Successfully obtained a favorable decision on appeal before the Commonwealth Court in a reported decision on behalf of a borough
    its council on the basis of high public official immunity wherein a plaintiff sought damages as a result of being debarred during a public meeting by the council from bidding on public works contracts.
    Obtained a jury defense verdict on behalf of a township wherein a plaintiff alleged that he sustained a foot fracture after stepping into an uncovered utility trench.
    Obtained a non-jury defense verdict on behalf of a city wherein a plaintiff alleged that his rental property sustained damages as a result of a sanitary sewer back-up.
    Obtained a decision in favor of a home inspector after binding arbitration wherein a plaintiff alleged that the inspector was negligent for failing to discover the existence of mold during a home inspection.
    Obtained a non-jury defense verdict on behalf of a police officer wherein a plaintiff alleged unlawful use of force during the course of an arrest.
    Successfully negotiated a favorable settlement in the amount of $15,000 on behalf of a township wherein a police officer who dem
    ed $75,000 alleged wrongful termination from the township police department in violation of his equal protection rights.
    Representative Cases: Osiris Enterprises v. Borough of Whitehall, 877 A.2d 560 (Pa. Cmwlth. 2005)
    Osiris Enterprises v. Borough of Whitehall, 398 F. Supp. 2d 400 (W.D. Pa. 2005)
    Published Works: Taking vs. Tort: Which Is It in Relation to Sanitary Sewer Overflows?, Defense Digest, March 2021, Vol. 27, No. 2
    The First Amendment's Protection Applies To Certain Comments Directed Toward Police Officers, Defense Digest, Vol. 13, No. 4, December, 2007
    Nanty-Glo Rule Applies to Preliminary Objections Raising Issues of Fact, Defense Digest, Vol. 10, No. 1, March, 2004

Experience

  • Bar Admission & Memberships
    Admissions
    2000, Pennsylvania
    2000, U.S District Court Western District of Pennsylvania
    2007, U.S. Court of Appeals 3rd Circuit
    Memberships

    Associations & Memberships

    Allegheny County Bar Association
    Pennsylvania Bar Association

  • Education & Certifications
    Law School
    New England Law Boston
    Class of 1999
    J.D.
    Other Education
    Pennsylvania State University
    Class of 1996
    B.S.

    Saint Vincent College
    Class of 1995
    B.A.

Contact Christian D. Marquis

Share Holder at Marshall Dennehey
4.7
12 reviews

Union Trust Building, 501 Grant Street, Suite 700Pittsburgh, PA 15219U.S.A.

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Fax: (412) 803-1188

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Attorneys FAQs

  • What year was this attorney first admitted to the bar?
    Christian D. Marquis was admitted in 2000 to the State of Pennsylvania.
  • Is this attorney admitted to practice in any U.S. Federal Courts?
    Christian D. Marquis is admitted to practice before the United States Court of Appeals for the Third Circuit and United States District Court for the Western District of Pennsylvania.
  • Is this attorney Martindale-Hubbell Peer Review rated?
    Yes, Christian D. Marquis has a 4.7 Peer Rating from Martindale-Hubbell.
  • What law school did this attorney attend?
    Christian D. Marquis attended New England Law Boston.