O'Donnell Law Firm

What O'Donnell Law Firm does

O'Donnell Law Firm is identified in the input firmographics as a small (7-employee), Tewksbury, MA-based entity founded in 2015 (website: kmodlaw.com). The substantially larger body of available source data, however, describes the affiliated practice context of Harding Mazzotti, LLP, a personal injury law firm operating under the d/b/a 'The Heavy Hitters' and '1800LAW1010', founded in 1994 by Paul B. Harding and Victor L. Mazzotti. Per the data, the firm operates 40+ attorneys and 120+ support staff across nine office locations in New York (Albany headquarters plus Saratoga Springs, Schenectady, Utica, Plattsburgh, Rochester/Pittsford), Vermont (Burlington, Manchester Center), and Massachusetts (Tewksbury). Practice areas cover motor vehicle accidents (car, truck, motorcycle), workers' compensation, wrongful death, slip and fall, and a broad mass tort docket including Zantac, Depo-Provera, Ozempic/Wegovy, Valsartan, Dupixent, Oxbryta, Zyprexa, Paragard IUD, Allergan breast implants, hernia mesh, IVC filters, Monsanto Roundup, NEC baby formula, hair relaxer, social media/Roblox, and ultra-processed foods.

The business model is contingency-fee legal services: clients pay no fee unless the firm wins, with the firm earning a percentage of settlements or judgments. Workers' compensation fees are reported at approximately 15% of award, approved by a Law Judge. Go-to-market is sales-led, with direct attorney-client engagement supported by a multi-channel marketing mix that includes community sponsorships (Harding Mazzotti Arena naming rights, Syracuse Athletics Official Partnership, Empire State Youth Orchestra Vivace sponsorship), broadcast media (Super Bowl LX commercial), content marketing (blog and legal resources), newsletter, and organic social. Distribution is via 24/7 phone intake (800-529-1010), website lead capture, and physical office consultations. The firm reports over $1 billion in cumulative settlements across 30+ years and 2,000+ five-star client reviews, with disclosed high-value verdicts including $13M (defective road pavement), $6M (construction accident), $4.25M (motor vehicle), $3.22M (car accident), and $2.75M (tractor trailer).

No technology platform, proprietary software, AI/ML capabilities, APIs, or patents are disclosed; the practice is a traditional legal services operation distinguished by talent, brand, and channel investment rather than technology stack. Partner Rosemarie Riddell Bogdan holds leadership appointments in multiple national MDL proceedings (Zantac MDL 2924, Valsartan MDL 2875, Depo-Provera MDL 3140, Bard Hernia Mesh MDL 3029), conferring structural participation in large-scale pharmaceutical and medical device litigation.

Name

O'Donnell Law Firm

Legal name

Harding Mazzotti, LLP

Website

https://kmodlaw.com

Company type

Private

Founded year

1994

Operating status

Operating

Headcount range

1–10 employees

Short description

Harding Mazzotti, LLP, the affiliated practice context of O'Donnell Law Firm, is a contingency-fee personal injury law firm with 40+ attorneys and 120+ support staff across nine offices in New York, Vermont, and Massachusetts, serving individuals injured in motor vehicle, workplace, and mass tort matters.

Ownership category

akta.pro rank

Product category

Personal Injury Legal Services

NAICS

Offices of Lawyers (541110)

SIC

Services-Legal Services (8111)

akta.pro primary industry

Personal Injury & Insurance Defense (BPAHAAAM)

Keywords

• Personal injury law
• Contingency fee legal
• Mass tort litigation
• Workers compensation law
• Defective drug lawsuits

Headquarters

HQ city

Albany

HQ country

United States

HQ region

North America

Offices9 records

Markets served

GTM type

B2C

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Others, Infrastructure

Revenue model

1. Contingency Fee Legal Services: The firm operates on a no-fee-unless-we-win model where attorneys earn a percentage of settlements or judgments only when clients receive compensation. Contingent fees are calculated based on recovery, with clients selecting their preferred computation method.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels5 records

Core offering

O'Donnell Law Firm operates as a personal injury legal practice based in Tewksbury, Massachusetts, providing contingency-fee representation to individuals injured due to the negligence of others. Services span motor vehicle accidents (car, truck, motorcycle), workers' compensation, wrongful death, slip-and-fall, and mass tort litigation involving defective drugs, defective medical devices, and defective consumer products. The firm is connected to the broader Harding Mazzotti, LLP platform ("The Heavy Hitters") that fields 40+ attorneys across 8 offices in NY, VT, and MA.

Product overview

Harding Mazzotti, LLP (operating as 'The Heavy Hitters') is a personal injury law firm offering comprehensive legal services across New York, Vermont, and Massachusetts. The firm operates as a unified legal services practice organized around practice areas including Motor Vehicle Accidents (covering automobiles, trucks, and motorcycles), Workers' Compensation, Wrongful Death, Slip and Fall, and mass tort litigation for Defective Drugs and Defective Medical Devices. The firm also handles Defective Products cases including pharmaceutical litigation (Zantac, Depo-Provera, Ozempic/Wegovy, Valsartan, Dupixent, Oxbryta, Zyprexa), medical device litigation (Paragard IUD, Allergan Breast Implants, Hernia Mesh, IVC Filters), and consumer product cases (Monsanto Roundup, NEC Baby Formula, Hair Relaxer, Social Media/Roblox, Ultra-Processed Foods). Services are delivered through eight office locations with over 40 attorneys and 120 support staff, operating on a no-fee contingency basis.

Differentiator

Problem solved

Functional benefit

Products and services

• Personal Injury Legal Services Comprehensive legal representation for individuals injured due to someone else's negligence, covering cases across New York, Vermont, and Massachusetts.
• Car Accidents Legal Services Legal representation for individuals injured in automobile collisions, including rear-end crashes, intersection accidents, highway accidents, and impaired or distracted driving cases.
• Truck Accidents Legal Services Legal representation for victims of commercial truck accidents involving tractor-trailers, 18-wheelers, delivery trucks, and other large commercial vehicles, subject to FMCSA regulations.
• Motorcycle Accidents Legal Services Legal representation for motorcycle riders injured due to another party's negligence on the road.
• Workers' Compensation Legal Services Legal assistance for workers injured on the job, navigating the workers' compensation system to secure medical benefits and lost wage payments.
• Wrongful Death Legal Services Legal representation for families pursuing wrongful death claims when a loved one's death was caused by another party's negligence.
• Slip and Fall Accidents Legal Services Legal representation for individuals injured due to hazardous conditions on someone else's property, including failure to maintain safe premises.
• Defective Drugs Legal Services Legal representation for individuals harmed by dangerous pharmaceutical drugs, including mass tort litigation against drug manufacturers.
• Depo-Provera Meningioma Lawsuit Legal representation for women who developed intracranial meningiomas after using Depo-Provera injectable contraceptive, associated with 5.5 times higher risk according to BMJ studies.
• Ozempic and Wegovy Lawsuit Legal representation for individuals who experienced adverse effects from Ozempic and Wegovy weight loss medications.
• Valsartan Lawsuit Legal representation for individuals who developed cancer due to NDMA contamination in valsartan heart medications.
• Zantac Lawsuit Legal representation in national MDL litigation for plaintiffs who developed cancer from taking Zantac/ranitidine contaminated with NDMA, a known carcinogen.
• Dupixent CTCL Skin Cancer Lawsuit Legal representation for individuals who developed cutaneous T-cell lymphoma (CTCL) allegedly linked to Dupixent medication.
• Oxbryta Lawsuit Legal representation for individuals who experienced adverse effects from Oxbryta sickle cell disease medication.
• Zyprexa Breast Cancer Lawsuit Legal representation for individuals who developed breast cancer allegedly linked to Zyprexa antipsychotic medication.
• Defective Medical Devices Legal Services Legal representation for individuals harmed by defective medical devices, including participation in national MDL litigations.
• Paragard IUD Lawsuit Legal representation for women who experienced complications from Paragard copper IUD devices, including device breakage during removal.
• Allergan Breast Implant Lawsuit Legal representation for individuals with Allergan BIOCELL textured breast implants linked to BIA-ALCL cancer.
• Hernia Mesh Implant Lawsuit Legal representation for individuals who experienced complications from defective hernia mesh implants, part of Bard Hernia Mesh MDL litigation.
• IVC Filter Lawsuit Legal representation for individuals harmed by inferior vena cava (IVC) filters that migrated, fractured, or caused organ perforation.
• Defective Products Legal Services Legal representation for individuals injured by defective consumer products, including dangerous household items and industrial products.
• Monsanto Roundup Lawsuit Legal representation for individuals who developed cancer due to exposure to Roundup herbicide containing glyphosate.
• NEC Baby Formula Lawsuit Legal representation for families of premature infants who developed necrotizing enterocolitis (NEC) after feeding with cow's milk-based baby formula.
• Hair Relaxer Cancer Lawsuit Legal representation for women who developed uterine cancer or other cancers from using chemical hair relaxer products.
• Social Media Lawsuit Legal representation for individuals harmed by social media platforms, including cases related to child exploitation and mental health impacts.
• Roblox Child Exploitation Lawsuit Legal representation for families of children who experienced sexual abuse or exploitation on the Roblox platform.
• Ultra-Processed Foods Lawsuit Legal representation for individuals who developed Type 2 diabetes allegedly linked to consumption of ultra-processed foods.

Quantifiable outcome

• Over $1 billion in settlements and verdicts recovered for clients
• +2 more outcomes

Named customers7 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

Three partnerships are on record, tiered minor and core.

• Empire State Youth Orchestra (ESYO)minorGTM or Marketing Partner · 1 February 2026Harding Mazzotti is a Vivace level sponsor of ESYO, providing financial support to further their operations and mission throughout the year. The firm featured ESYO in their Super Bowl LX commercial.
• Syracuse AthleticscoreGTM or Marketing Partner · 1 December 2025Harding Mazzotti became an Official Partner of Syracuse Athletics, marking its first formal partnership with the university as a whole. The multi-year commitment supports all of Syracuse's varsity programs while highlighting athletes from New York State. The firm previously supported individual student athletes through Name, Image, and Likeness (NIL) programs with SU Football NIL.
• Harding Mazzotti Arena (formerly Cool Insuring Arena)coreGTM or Marketing Partner · 1 August 2025The firm acquired naming rights to the arena in Glens Falls, New York through a five-year deal to boost local sports, entertainment, and economic growth. Showcases the firm's commitment to improving communities they serve.

Scale indicators6 records

Recent moves8 records

Expansion highlights5 records

Broad incumbents

• Weitz & Luxenberg PC: An established national plaintiff-side firm specializing in personal injury, mass torts, and class actions including asbestos, opioids, and defective products. Comparable to Harding Mazzotti on plaintiff-side contingency work and mass-tort participation at a larger national scale.
• Morgan & Morgan: The largest personal injury law firm in the United States, operating nationally across 50+ states with a contingency-fee model and heavy TV/digital advertising. Directly comparable to Harding Mazzotti's plaintiff-side model and mass-tort practice, but at substantially greater scale and geographic reach.
• Napoli Shkolnik PLLC: A national plaintiff-side firm with active practice in mass torts, personal injury, and complex litigation, holding leadership roles in MDLs. Comparable to Harding Mazzotti's MDL leadership in mass torts and personal injury work, but with broader geographic footprint.
• Simmons Hanly Conroy LLC: One of the leading national mass-tort and personal injury firms with deep MDL participation and a plaintiff-side contingency model. Closely comparable to Harding Mazzotti's mass-tort practice (Zantac, Depo-Provera, etc.) and contingency-based fee structure.
• The Cochran Firm: A national plaintiff-side personal injury firm with offices in multiple states, operating on contingency with a focus on high-value tort and mass-tort cases. Comparable to Harding Mazzotti's plaintiff-side model, contingency pricing, and broad mass-tort engagement.

Direct peers

• The Barnes Firm: Personal injury firm that emerged from the Cellino & Barnes split, operating across New York and other states with a contingency model. Directly comparable to Harding Mazzotti in personal injury focus, contingency pricing, and Northeast regional presence.
• Block O'Toole & Murphy: A New York-based personal injury and construction accident firm with a similar contingency-fee model and multi-attorney trial practice. Comparable to Harding Mazzotti on size, geography (NY overlap), and case mix including high-value verdicts in motor vehicle and premises liability matters.
• Cellino Law: A New York personal injury firm operating on a contingency-fee basis with a heavy regional brand presence and television advertising. Closely comparable to Harding Mazzotti's plaintiff-side model, NY geographic footprint, and aggressive consumer marketing approach.
• Ginarte Law Firm: A Northeast-based personal injury firm with a contingency-fee model and offices in New York and New Jersey. Comparable to Harding Mazzotti on regional Northeast personal injury focus, contingency pricing, and broad plaintiff-side case categories.
• Jacoby & Meyers LLP: A long-established personal injury firm operating across multiple states with a contingency-fee model and broad consumer advertising. Comparable to Harding Mazzotti on contingency pricing, multi-state personal injury practice, and brand-driven customer acquisition.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/o'donnell-law-firm

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 O'Donnell Law Firm