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Abbye Klamann Ognibene

Trusted class action attorney serving Boston.

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Abbye Klamann Ognibene is an attorney based in Boston, MASSACHUSETTS. The practice focuses on Class Action, General, and Litigation. Currently practicing at Hagens Berman Sobol Shapiro Llp.

Based in
Boston, MASSACHUSETTS
Experience
attorney
Known for
Class Action · General · Litigation
  • Handles Class Action, General, and Litigation matters from Boston, MASSACHUSETTS.
  • Recognized with Best Lawyers in America — Antitrust Law (2026).

About Abbye Klamann Ognibene: Abbye Klamann Ognibene is an attorney based in Boston, MASSACHUSETTS. The practice focuses on Class Action, General, and Litigation. Currently practicing at Hagens Berman Sobol Shapiro Llp.

Areas of practice

Practice focus

Abbye Klamann Ognibene represents clients in Boston, Massachusetts across the following areas of law. Each area links to other verified attorneys with the same focus.

Biography

About Abbye Klamann Ognibene

Ms. Ognibene believes in taking on corporations in the fight for plaintiffs' rights, including the right to online privacy and to fair pricing in medical care and consumer goods.

CURRENT ROLE

  • Partner, Hagens Berman Sobol Shapiro LLP
  • Practice focuses on fair pricing for pharmaceuticals, catastrophic personal injury and product recalls, healthcare fraud, and antitrust enforcement
  • Court appointed interim lead class counsel in CareFirst of Maryland, Inc. et al. v. Johnson & Johnson et al., a class-action lawsuit representing health benefit providers, accusing Johnson & Johnson of unlawfully delaying the release of biosimilar medications that could compete with its autoimmune medication, Stelara
  • Second chair in six-week federal antitrust trial, In re HIV Antitrust Litigation, concerning anticompetitive pricing for HIV medication
  • Helped launch Boston office Pro Bono Program
  • Member of HBSS team representing purchasers in In re Actos Antitrust Litigation, In re Vascepa Antitrust Litigation, and In re Intuniv Antitrust Litigation
  • Represents parents in personal injury and wrongful death cases concerning Fisher-Price’s recalled Rock ‘n Play sleepers
  • Secured a successful Second Circuit order upholding the trial court’s denial of defendants’ motion to dismiss in In re Actos

EXPERIENCE

  • Prior to joining Hagens Berman, Ms. Ognibene was an associate at a start-up litigation boutique, where she helped launch a plaintiffs' class-action practice group.
  • She also worked on cutting-edge class-action litigation at Lieff Cabraser Heimann & Bernstein, focusing on digital privacy and antitrust cases.
  • While in law school, Abbye worked for more than two years as a law clerk to the legal team of DeBoer v. Snyder, consolidated sub nom. Obergefell v. Hodges, which guaranteed the nationwide right to marry for same-sex couples.

Credentials

Education

  • The University of Michigan Law School

    J.D. · 2016

Recognition

Awards & honors

  • Best Lawyers in America — Antitrust Law

    2026

  • Best Lawyers in America — Litigation - Antitrust

    2026

  • Best Lawyers in America — Mass Tort Litigation / Class Actions - Plaintiffs

    2026

  • Best Lawyers in America — Awards:

    2026

  • Best Lawyers in America — Massachusetts Chapter Member, National Lawyers Guild

    2026

  • Best Lawyers in America — Panelist, "Working with Experts and Expert Witness Testimony - Do's & Don'ts," ABA Spring Litigation Meeting (2024)

    2026

Locations

Office locations

Main office

Hagens Berman Sobol Shapiro Llp

1 Faneuil Hall Square, 5th Floor

Boston, Massachusetts 02109

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Frequently asked

Common questions

  • What areas of law does Abbye Klamann Ognibene practice?

    Abbye Klamann Ognibene focuses on Class Action, General, Litigation, and Product Liability.

  • Where is Abbye Klamann Ognibene located?

    Abbye Klamann Ognibene primarily serves clients in Boston, Massachusetts, with an office at 1 Faneuil Hall Square, 5th Floor.

  • Is Abbye Klamann Ognibene a verified attorney?

    Abbye Klamann Ognibene's profile is listed but has not yet been claimed by the attorney. Verification status is pending.

  • How can I schedule a consultation with Abbye Klamann Ognibene?

    You can book a consultation through LawyersListed directly from this page. Initial outreach can also be made by phone at 617-482-3700.