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Marshall DenneheyShare Holder
Gregory P. Graham
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Gregory P. Graham

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501 Grant Street, Suite 700, Pittsburgh, PA 15219

Architectural, Engineering & Construction Defect Litigation, Class Action Litigation, Commercial Litigation and 4 more

About Gregory P. Graham

Greg is a member of the Professional Liability Department whose practice focuses on the defense of corporations and professionals in commercial, construction and class action litigation. He also defends attorneys in legal liability actions covering a wide range of malpractice claims including those arising from civil and family disputes, business transactions in the real estate and oil and gas industries, and commercial litigation.

Greg has substantial experience defending high-value class action cases at both the state and federal level. In doing so, he prioritizes the development of an early case strategy to defeat class certification in order to minimize his clients’ potential liability and damage exposure. He has successfully defeated class certification in multiple jurisdictions for clients facings claims of invasion of privacy, violations of state and federal electronic communication protection acts, and allegations of improper assessment and conversion of state sales taxes. When certification cannot be avoided, Greg develops an aggressive discovery strategy to minimize class size and damage exposure. He has obtained summary judgment dismissals and favorable settlements in class actions in both state and federal court.

Greg's construction practice includes the representation of owners, contractors, and design professionals from defect and commercial loss claims related to the construction industry. He has litigated on behalf of clients in matters arising from publicly and privately-funded projects in state and federal court across the country. He also defends construction entities in the natural gas and energy industry facing high-exposure commercial loss and environmental claims.

Greg has experience litigating on behalf of securities professionals in court and FINRA arbitration. He has successfully assisted financial management companies in responding to administrative investigations brought by state and industry regulatory agencies.

He is also proficient in matters involving significant E-Discovery and document discovery. His experience with managing large-scale E-discovery efforts minimizes unnecessary cost while also allowing Marshall Dennehey to provide the best defense possible for its clients in discovery-intensive cases.

Greg was a 2013 graduate of the University of Pittsburgh School of Law. While in law school, Greg was invited to be a visiting research fellow at the Max Planck Institute for Comparative and International Private Law in Hamburg, Germany. He was also an Articles Editor for the Journal of Technology Law & Policy and a member of two award-winning moot court teams.

Honors & awards

The Best Lawyers: Ones to Watch, Commercial Litigation; Construction Law; Product Liability Litigation - Defendants
2021-2025

The Best Lawyers: Ones to Watch, Litigation - Construction; Professional Malpractice Law
2024-2025

Pennsylvania Super Lawyers Rising Star
2020-2022, 2024-2025

Year joined

2022

Thought Leadership

PENNSYLVANIA SUPERIOR COURT EFFECTIVELY EXPANDS STATUTE OF LIMITATIONS FOR LEGAL MALPRACTICE CLAIMS IN PENNSYLVANIA

Pittsburgh
Lawyers' Professional Liability
March 1, 2026
After much anticipation, the Pennsylvania Superior Court issued its en banc decision in Poteat v.

Invoking the Mandatory Mediation Clause Against Buyers - A Beneficial Strategic Tactic

Pittsburgh
Real Estate E&O Liability
November 1, 2025
When facing claims, Pennsylvania real estate agents too often view the mandatory mediation paragraph found within the Standard Agreement for the Sale of Real Estate as little more than boilerplate.

‘Leveling Up’ the Client Engagement Letter as a Defense Tool

Pittsburgh
Lawyers' Professional Liability
September 1, 2025
Every new matter provides an opportunity for an attorney to refine their skills. Legal Update for Lawyers’ Professional Liability - September 2025 is prepared by Marshall Dennehey to provide information on recent legal developments

Marshall Dennehey Announces 2025 Pennsylvania Super Lawyers and Rising Stars

May 22, 2025
Thirty-three attorneys across Marshall Dennehey's five Pennsylvania offices have been selected to the 2025 edition of Pennsylvania Super Lawyers magazine.

Don’t Reinvent the Wheel: Approaching Gen AI Usage in Litigation

Pittsburgh
Lawyers' Professional Liability
October 10, 2024

Classes/Seminars Taught

AI in the Legal Profession, Marshall Dennehey Client Presentation, September 2024

Co-Taught 'Business Law,' Westminster College, Spring 2015

 

Gregory P. Graham (Pittsburgh, Pennsylvania) View website

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Services

Areas of Law

  • Commercial Litigation
  • Other 6
    • Architectural, Engineering & Construction Defect Litigation
    • Class Action Litigation
    • Lawyers' Professional Liability
    • Privacy & Data Security
    • Miscellaneous Professional Liability
    • Real Estate E&O Liability

Practice Details

  • Firm Information
    Position
    Shareholder
    Firm Name
    Marshall Dennehey
  • Representative Cases & Transactions
    Cases
    Published Works: 'Don't Reinvent the Wheel: Approaching Gen AI Usage in Litigation,' The Legal Intelligencer, October 10, 2024
    'Retooling the Client Engagement Letter to Minimize Liability Claim Exposure,' PLUS Blog, March 23, 2023
    'Dem
    for Remote Desktop Access
    Cloud Computing Services Necessitates a Refined Approach for Civil Litigation Electronic Discovery,' Lawyers Journal, November 18, 2022
    'Supreme Court's Halliburton Ruling May Be Curse in Disguise for Securities Defendants' Defense Digest, Vol. 20, No. 3, September 2014
    'Storm Fronts
    Filmmaking: Cloud Computing Regulation
    the Impact on Independent Filmmakers,' University of Pittsburgh School of Law Journal of Technology Law & Policy, Vol. 13, 2012
    'Lost in a Cloud: Overview of Legal Obstacles to the Growth of Cloud Computing in European Markets,' Croatian Journal of Media & Technology, Vol. 18, 2012
  • Additional Links
    https://marshalldennehey.com/attorneys/gregory-p-graham

Experience

  • Bar Admission & Memberships
    Admissions
    2013, Pennsylvania
    Memberships

    Associations & memberships

    Pennsylvania Defense Institute (PDI), Co-Chair Professional Liability Committee

  • Education & Certifications
    Law School
    University of Pittsburgh School of Law
    Class of 2013
    J.D.
    Other Education
    Michigan State University
    Class of 2007
    B.A.

Contact Gregory P. Graham

Share Holder at Marshall Dennehey
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Union Trust Building, 501 Grant Street, Suite 700Pittsburgh, PA 15219U.S.A.

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Attorneys FAQs

  • What year was this attorney first admitted to the bar?
    Gregory P. Graham was admitted in 2013 to the State of Pennsylvania.
  • What law school did this attorney attend?
    Gregory P. Graham attended University of Pittsburgh School of Law.

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