langer, grogan & diver

What langer, grogan & diver does

Langer, Grogan & Diver P.C. is a Philadelphia-based plaintiff-side litigation boutique organized as a professional corporation, founded by Howard Langer and John J. Grogan. The firm represents consumers, small businesses, government entities, and public interest organizations in class action and complex litigation across five integrated practice areas: antitrust litigation, consumer protection, whistleblower/False Claims Act qui tam representation, social justice/civil rights advocacy, and commercial and contract disputes. It pursues matters in state and federal courts across the United States, with no technology platform underlying its service offering. The firm is recognized by Chambers USA as a Band 3 antitrust practice in Pennsylvania (2022, 2023, 2026), has been designated a "National Leader in the field of consumer class actions" by the U.S. District Court for the Eastern District of Pennsylvania, and holds four American Law Institute members among its ten named attorneys.

The firm's core product is legal representation, not a technology platform; there are no proprietary features, patents, or AI capabilities disclosed. Its practice areas are deeply overlapping rather than siloed, with attorneys routinely working across matters — for example, antitrust expertise applied to sports broadcasting class actions (NFL, MLB, NHL) and RICO expertise deployed in consumer fraud and predatory lending cases against banks, lenders, and fraudsters.

Langer, Grogan & Diver operates on a contingency fee model typical of plaintiff-side class action work, generating revenue as a percentage of client recoveries upon successful resolution. It acquires matters through professional reputation, peer and co-counsel referrals, and direct client inquiries rather than through traditional sales channels. Landmark recoveries include the $4.7 billion NFL Sunday Ticket verdict, the $200 million-plus MLB antitrust settlement, $150 million-plus Wachovia Bank fraud recovery, and approximately $80 million from the University of Phoenix whistleblower settlement. Strategic distribution relies on long-standing co-counsel alliances with Cohen Milstein Sellers & Toll, Susman Godfrey, Hausfeld, ACLU of Pennsylvania, and Community Legal Services of Philadelphia.

Name

langer, grogan & diver

Legal name

Langer, Grogan & Diver P.C.

Website

https://langergrogan.com

Company type

Private

Operating status

Operating

Short description

Langer, Grogan & Diver is a Philadelphia-based plaintiff-side litigation boutique representing consumers, small businesses, and government entities in antitrust, consumer protection, whistleblower (False Claims Act), and social justice class actions nationwide, operating on contingency fees.

Ownership category

akta.pro rank

Product category

Plaintiff-side Litigation Services

NAICS

Legal Services (5411), Offices of Lawyers (541110)

SIC

Services-Legal Services (8111)

akta.pro primary industry

Litigation & Dispute Resolution (BPAHAAAB)

akta.pro secondary industry

Legal Practice Management & Case Management (BPAEAPAC)

Keywords

• Antitrust litigation
• Consumer class actions
• Whistleblower representation
• Civil rights advocacy
• Complex civil litigation

Headquarters

HQ city

Philadelphia

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Technology or R&D, Others

Revenue model

1. Legal Services - Contingency Fee: The firm operates on a contingency fee basis typical of plaintiff-side class action litigation, where attorneys receive a percentage of recoveries obtained for clients. This model aligns firm incentives with client outcomes and is standard in antitrust, consumer protection, and whistleblower cases.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels6 records

Core offering

Langer, Grogan & Diver P.C. is a Philadelphia-based plaintiff-side litigation boutique that represents consumers, small businesses, and public interest clients in class actions and complex litigation. Its core practice areas are antitrust litigation, consumer protection, whistleblower/False Claims Act representation, social justice/public interest litigation, and commercial and contract disputes. The firm primarily operates on contingency fee arrangements and pursues cases in state and federal courts across the United States.

Product overview

Langer, Grogan & Diver P.C. is a Philadelphia-based law firm offering a unified suite of legal services focused on class action and complex litigation. The firm's practice is organized into five core service areas: Antitrust Litigation (handling antitrust class actions and related claims), Consumer Protection (pursuing claims against predatory lending, deceptive practices, and consumer fraud), Whistleblower/False Claims Act representation, Social Justice/public interest litigation (including civil rights, constitutional claims, and public interest advocacy), and Commercial & Contract Litigation. These practice areas are not separate products but integrated service lines that often overlap in complex matters, with attorneys frequently working across multiple practice areas on major cases.

Differentiator

Problem solved

Functional benefit

Products and services

• Antitrust Litigation Services Legal representation in antitrust matters including class actions, monopolization claims, and price-fixing litigation in state and federal courts across the country.
• Consumer Protection Legal Services Protection of consumers from dishonest corporations and deceptive practices through class action practice, targeting marketplace abuses and providing wide relief to affected consumers.
• Whistleblower / False Claims Act Representation Legal services for whistleblowers bringing fraud cases under the False Claims Act qui tam provision, with attorneys helping expose fraudulent claims submitted to the government.
• Social Justice Litigation Law in the public interest representation including civil rights, First Amendment, LGBTQ+ rights, and public interest advocacy cases, often partnering with organizations like ACLU.
• Commercial & Contract Litigation Commercial litigation matters including contract disputes, franchise litigation, and business torts outside of the antitrust field.

Quantifiable outcome

• $4.7 billion jury verdict in NFL Sunday Ticket antitrust case
• +3 more outcomes

Named customers3 records

Segments2 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Twelve partnerships are on record, tiered core and minor.

• Cohen Milstein Sellers & TollcoreStrategic or Co-development Partner · 8 August 2025Co-counsel relationship with Cohen Milstein Sellers & Toll for antitrust class action challenging early decision practices at elite colleges. Also co-counsel in NFL broadcasting antitrust litigation. Long-standing collaboration on major antitrust and consumer protection cases.
• Stapleton Seginal Cochran LLCminorStrategic or Co-development Partner · 24 March 2025Co-counsel partnership in TRO Ireland v. Hegseth representing decorated service members challenging transgender military ban.
• GLBTQ Legal Advocates & Defenders (GLAD Law)minorStrategic or Co-development Partner · 24 March 2025Co-counsel partnership in litigation challenging transgender military ban on behalf of service members.
• National Center for Lesbian Rights (NCLR)minorStrategic or Co-development Partner · 24 March 2025Co-counsel partnership representing Air Force service members in challenge to transgender military ban.
• Community Legal Service of PhiladelphiacoreStrategic or Co-development Partner · 7 August 2024Long-standing partnership with Community Legal Service for consumer protection matters including Stewart v. EasyKnock and Dwyer v. Ameriprise amicus briefs. Irv Ackelsberg spent 30 years with CLS.
• ACLU of PennsylvaniacoreStrategic or Co-development PartnerCo-counsel with ACLU of Pennsylvania on stop-and-frisk litigation and Fields v. City of Philadelphia First Amendment recording rights case. Mary Catherine Roper formerly Deputy Legal Director of ACLU of PA.
• Blood, Hurst and O'ReardonminorStrategic or Co-development PartnerCo-counsel in ITT student borrower litigation representing victims of predatory lending scheme.
• The Law Office of Paul AronsminorStrategic or Co-development PartnerCo-counsel in ITT student borrower RICO class action lawsuit.
• Kairys Rudovsky Messing Feinberg and LinminorStrategic or Co-development PartnerCo-counsel with ACLU in Philadelphia stop-and-frisk enforcement of settlement.
• Susman Godfrey LLPminorStrategic or Co-development PartnerCo-counsel in NFL broadcasting antitrust litigation designated as co-lead counsel alongside LGD.
• Hausfeld LLPminorStrategic or Co-development PartnerCo-counsel in NFL broadcasting antitrust litigation.
• University of Pennsylvania Law SchoolminorStrategic or Co-development PartnerLanger, Grogan & Diver Public Interest Fellowship established at UPenn Law School funding a graduating student's first year of public interest work. Firm partner Peter Leckman teaches antitrust and racketeering law at UPenn as adjunct faculty.

Scale indicators8 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Cohen Milstein Sellers & Toll: Washington, D.C.-based plaintiff-side litigation boutique with leading antitrust and consumer protection practices. Co-counsel partner to LGD in the NFL broadcasting antitrust case and college early-decision class action, indicating closely aligned case portfolios and client types.
• Susman Godfrey LLP: Houston-based nationally recognized trial firm with a prominent plaintiff-side antitrust practice. Designated co-lead counsel with LGD in NFL Sunday Ticket litigation, reflecting directly comparable antitrust class action work and contingency fee model.
• Hausfeld LLP: Global plaintiff-side litigation firm focused on antitrust and consumer class actions. Co-counsel with LGD in the NFL broadcasting antitrust litigation and a recurring peer in complex consumer protection matters.
• Lieff Cabraser Heimann & Bernstein: San Francisco-based class action and complex litigation firm with strong antitrust and consumer protection practices. Peter Leckman's prior firm; comparable in case type, plaintiff-side orientation, and contingency fee structure.
• Berger Montague PC: Philadelphia-based complex litigation and class action firm with a long-standing antitrust and consumer protection practice. Direct geographic and practice-area peer to LGD in the Philadelphia plaintiff-side bar.
• Kessler Topaz Meltzer & Check: Radnor, Pennsylvania-based plaintiff-side securities and antitrust class action firm. Operates in adjacent regional and substantive territory to LGD, frequently competing for lead-counsel roles in consumer and antitrust class actions.
• Robins Kaplan LLP: National trial firm with a strong plaintiff-side antitrust practice and a record of multibillion-dollar class action verdicts. Directly comparable to LGD in case profile, contingency fee revenue model, and class action leadership.
• Motley Rice LLC: Mount Pleasant, South Carolina-based plaintiff-side litigation firm known for large-scale consumer protection, antitrust, and mass tort class actions. Comparable in scale of verdicts sought and contingency fee engagement structure.
• Hagens Berman Sobol Shapiro: Seattle-based plaintiff-side consumer protection and antitrust class action firm. Comparable in targeting corporate defendants in consumer-facing class actions and operating on contingency fee arrangements.
• Scott+Scott: New York/Connecticut-based plaintiff-side antitrust and securities litigation firm. Direct peer in consumer and antitrust class action practice, including sports and broadcasting-related antitrust matters.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/langer-grogan-&-diver-p.c./about

Revenue estimate

Valuation estimate

Number of profiles

Profiles9 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about langer, grogan & diver