Michelle A. Mantine Photo

Michelle leads our global Antitrust & Competition team. She takes a hands-on approach to solving her cross-industry and cross-border clients’ low and high-stake antitrust problems across all fronts (litigation, transactional, counseling, and compliance). Michelle is individually ranked by Chambers USA 2023 for Antitrust and recently won the The Legal Intelligencer’s 2023 Professional Excellence Award for Best Law Firm Mentor. 


  • Duquesne University School of Law, 2006, J.D., cum laude, Comment Editor, Duquesne Law Review; Katie Elisabeth Westbrook Award for Excellence (2006); Order of the Barristers (2006); ATLA Regional Trial Competition Champions (2006); Buffalo/Niagara Trial Competition Finalist & Best Advocate Award (2005); National Trial Competition Regional Finalist (2005); Carol Los Mansmann First Year Appellate Moot Court Competition Finalist (2004)
  • Washington & Jefferson College, 2003, B.A., Economics, Political Science and Spanish, summa cum laude, Phi Beta Kappa; recipient of the Benjamin Franklin Book Prize in Economics, the Howard Goldfarb Prize in Political Science, and the J. Adolph Schmitz Prize in Languages

  • Pennsylvanie

  • State Supreme Court - Pennsylvania
  • Supreme Court of Appeals - West Virginia
  • U.S. District Court - Western District of Pennsylvania
  • U.S. District Court - Southern District of West Virginia
  • U.S. District Court - Northern District of West Virginia
  • U.S. District Court - Central District of Illinois
  • U.S. Court of Appeals - Ninth Circuit

  • American Bar Association – Antitrust Section
  • Journal of Federal Agency Action – Board of Editors
  • Washington & Jefferson College – Pre-Law Alumni Advisory Board (2011-present)
  • Duquesne University Kline School of Law – Past Board Member; General member (2006-Present)

  • Chief Judge Gary L. Lancaster (deceased), U.S. District Court - Western District of Pennsylvania, 1 January 2009 to 31 December 2010

Récompenses et distinctions

  • 2023 Up and Coming, Pennsylvania Antitrust, Chambers USA
  • 2023 Best Law Firm Mentor, Pennsylvania Legal Awards 2023, The Legal Intelligencer
  • 2019-2021 Acritas Star
  • 2019 GCR Litigation of the Year Award for Auto Parts Antitrust Litigation 
  • 2016 PBT Fast Trackers List, Pittsburgh Business Times
  • 2016 Lawyers on the Fast Track, The Legal Intelligencer
  • 2011 Outstanding Recent Graduate Award, Duquesne University School of Law, Women’s Law Association

Civic and Charitable Affiliations

  • March of Dimes Western PA Market Board of Directors (2023-Present)
  • Vice-Chair of 2021 Pittsburgh Signature Chefs Auction Event for March of Dimes
  • Pittsburgh YWCA – Board Member (2015-2021); Secretary (2017) Executive Committee Member (2017–2021) and Chair of Development Committee (2017-2019)


Michelle lives with her husband, Brian, and their three children Madeline, Henry, and Olivia in Sewickley, Pennsylvania. As a former marathoner, competitive figure skater, and certified yoga and spinning instructor, Michelle is passionate about exercise and its associated benefits on one’s physical, mental, and emotional well-being.