Caitlin G. Coslett

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Caitlin G. Coslett is a Shareholder at the Firm, where she concentrates her practice on complex litigation, including antitrust and mass tort litigation.

Ms. Coslett represents classes of direct purchasers of pharmaceutical drugs who allege that drug manufacturers have violated federal antitrust law by wrongfully keeping less-expensive generic drugs off the market and/or by wrongfully impeding generic competition. Her work on generic suppression cases has contributed to significant settlements totaling hundreds of millions of dollars, including in the cases of In re Solodyn (Minocycline Hydrochloride) Antitrust Litigation (for which Ms. Coslett served as Co-Lead Counsel), In re Lidoderm Antitrust Litigation, and In re Skelaxin (Metaxalone) Antitrust Litigation. Ms. Coslett is currently litigating several similar antitrust pharmaceutical cases, such as In re Effexor XR Antitrust Litigation, In re Bystolic Antitrust Litigation, In re Intuniv Antitrust Litigation, In re Lamictal Antitrust Litigation, In re Novartis and Par Antitrust Litigation, In re Opana ER Antitrust Litigation, and In re Suboxone (Buprenorphine Hydrochloride and Naloxone) Antitrust Litigation. She was honored for “Outstanding Antitrust Litigation Achievement by a Young Lawyer” for her work in In re Lidoderm Antitrust Litigation.

Ms. Coslett played a significant role in the post-trial litigation in Cook v. Rockwell International Corporation, a mass tort class action brought on behalf of thousands of property owners near the Rocky Flats nuclear plant in Colorado. The case settled for $375 million following a successful appeal to the Tenth Circuit and, in ruling for the plaintiffs on appeal, then-Judge Neil Gorsuch (who is now a Supreme Court Justice) praised Class Counsel’s successful “judicial jiu jitsu” in litigating the case through the second appeal. Ms. Coslett’s experience litigating antitrust class actions also includes In re CRT Antitrust Litigation, In re Domestic Drywall Antitrust LitigationIn re Payment Card Interchange Fee and Merchant Discount Antitrust Litigation, In re Steel Antitrust Litigation, and In re Urethane [Polyether Polyols] Antitrust Litigation. Ms. Coslett has also served as pro bono counsel for clients referred by the AIDS Law Project of Pennsylvania and Philly VIP.

Ms. Coslett was selected as a Rising Star by Super Lawyers from 2014-2020 and was named a “Next Generation Lawyer” by The Legal 500 United States 2019 in the Civil Litigation/Class Actions: Plaintiff category.

A Philadelphia native, Ms. Coslett graduated magna cum laude from Haverford College with a B.S. in mathematics and economics and graduated cum laude from New York University School of Law. At NYU School of Law, Ms. Coslett was a Lederman/Milbank Fellow in Law and Economics and an articles selection editor for the NYU Review of Law and Social Change. Prior to law school, she was an economics research assistant at the Federal Reserve Board in Washington, D.C.  Ms. Coslett was formerly one of the top 75 rated female chess players in the U.S.

Professional Leadership

  • Panelist at “Civil Justice Fest: A Month of Dialogues on the Most Pressing Civil Justice Issues,” Law & Economic Center, George Mason University Law School, November 2020.
  • Panelist at “13th Annual Private Enforcement Conference,” American Antitrust Institute, November 2019.

Business and Community Leadership

  • Ms. Coslett serves on the Board of Directors of Community Legal Services and on the Board of Directors of AccessMatters.  She previously served on the Board of Directors of New Directions for Women (2013-2019), which was dedicated to empowering female ex-Offenders to become independent and participating community members.
  • Ms. Coslett is a longtime volunteer tournament director with After School Activities Partnerships, organizing chess tournaments for Philadelphia public school students and clubs, including an annual tournament at her alma mater, Haverford college.

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Law School

New York University School of Law, J.D., cum laude, 2009


Haverford College, B.S., Economics and Mathematics, magna cum laude, 2005

Honors & Awards:

“Super Lawyers” Rising Stars: 2014 – 2020


Member – Pennsylvania Bar

Member – New Jersey Bar

Admitted – Eastern District of Pennsylvania

Admitted – District of New Jersey

Admitted – Tenth Circuit Court of Appeals

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