The Law Offices of Michael S. Lamonsoff, PLLC

What The Law Offices of Michael S. Lamonsoff, PLLC does

The Law Offices of Michael S. Lamonsoff, PLLC is a New York-headquartered personal injury law firm founded in 1988 by Michael S. Lamonsoff. Operating as a Professional Limited Liability Company, the firm maintains offices in Manhattan (headquarters), Brooklyn, Queens, and Verona, NJ, with 11-50 employees including a roster of 13 attorneys. Its plaintiff-side practice spans more than 20 areas: motor vehicle accidents, construction accidents, premises liability, workplace injuries, medical malpractice, nursing home abuse, police brutality, mass torts, and sexual abuse matters. The firm claims approximately $1 billion in cumulative client settlements and 150+ years of combined litigation experience among its attorneys.

The firm generates revenue via the standard contingency fee model prevalent in personal injury, in which client fees are typically a percentage (commonly 33-40%) of settlement or verdict amounts. There is no disclosed subscription, retainer, or alternative pricing. Go-to-market is consumer-direct and brand-driven: heavy multi-channel advertising across radio, television, MTA subway placements, streaming services (Spotify, Pandora), and aggressive SEO-driven search marketing, all anchored by founder Michael S. Lamonsoff's "The Bull" persona. Client acquisition indicators include 1,500+ five-star reviews and persistent award recognition (Super Lawyers 2020-2026, 10 Best Attorneys 2020-2026, America's Top 100 High Stakes Litigators 2024, Million Dollar Advocates Forum).

No proprietary technology platform, AI/ML capability, software product, or external funding is disclosed. Operational tooling is limited to standard case management and intake infrastructure. The firm is privately held by its founder with no disclosed M&A, partnership, or investor activity.

Name

The Law Offices of Michael S. Lamonsoff, PLLC

Legal name

The Law Offices of Michael S. Lamonsoff, PLLC

Website

https://msllegal.com

Company type

Private

Founded year

1988

Operating status

Operating

Headcount range

11–50 employees

Short description

The Law Offices of Michael S. Lamonsoff, PLLC is a New York-headquartered personal injury law firm founded in 1988, serving individual plaintiffs across motor vehicle, construction, premises liability, medical malpractice, mass torts, and sexual abuse matters on a contingency fee basis.

Ownership category

akta.pro rank

Product category

Personal Injury Law

NAICS

Offices of Lawyers (541110)

SIC

Services-Legal Services (8111)

akta.pro primary industry

Personal Injury & Insurance Defense (BPAHAAAM)

akta.pro secondary industry

Litigation Support & Expert Witness Services (BPAHALAG)

Keywords

• Personal injury law
• Contingency fee representation
• Accident litigation services
• Plaintiff civil litigation
• Negligence claims legal

Headquarters

HQ city

New York

HQ country

United States

HQ region

North America

Offices4 records

Markets served

GTM type

B2C

Offering type

Services

Cost components

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

Revenue model

1. Personal Injury Contingency Fees: The firm operates exclusively on a contingency fee basis. Clients pay no upfront costs for legal representation. The firm's fee is a percentage of the compensation received if the case is won. If the firm does not win the case, the client owes nothing. This model ensures access to legal representation for anyone regardless of financial means.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels7 records

Core offering

The firm provides plaintiff-side personal injury legal representation on a contingency fee basis, covering construction accidents, premises liability, motor vehicle and motorcycle accidents, medical malpractice, sexual abuse, mass torts, product liability, wrongful death, workers' compensation, and catastrophic injuries. Representation is delivered through free 24/7 consultations, with no fees charged to clients unless the case is won. The firm operates multiple physical offices across the New York metropolitan area and New Jersey, and reports nearly $1 billion in cumulative settlements and verdicts recovered.

Product overview

The Law Offices of Michael S. Lamonsoff, PLLC is a New York-based personal injury law firm offering comprehensive legal services through specialized practice areas. The firm provides representation across construction accidents, premises liability, personal injury, sexual abuse, motor vehicle accidents (including car, bus, and truck accidents), worker's compensation, wrongful death, mass torts, product liability, medical malpractice, and catastrophic injuries. Led by Michael S. Lamonsoff, known as "The Bull," the firm focuses on litigation and trial preparation, serving clients throughout New York City, New Jersey, and surrounding areas with contingency-fee-based representation.

Differentiator

Problem solved

Functional benefit

Brands

• The Bull: Nickname for Michael S. Lamonsoff, used as a branding identity for the firm. Michael Lamonsoff is referred to as 'The Bull' by clients due to his aggressive litigation approach.
• MSL
• The Bull's Millionaire's Club

Products and services

• Personal Injury Legal Services Broad plaintiff-side legal representation for individuals who have suffered physical, emotional, or mental harm caused by the negligence or intentional actions of others, covering the full range of personal injury matters from car accidents to medical malpractice for New York and New Jersey residents.
• Construction Accidents Legal Services Legal representation for construction workers injured on job sites, covering falls from heights, falling objects, scaffolding accidents, demolition incidents, and labor law violations under New York law.
• Premises Liability Legal Services Legal representation for individuals injured on someone else's property due to negligent maintenance or unsafe conditions, including sidewalk injuries, parking lot hazards, and inadequate security.
• Slip & Fall Accidents Legal Services Legal representation for individuals injured due to hazardous conditions such as wet floors, uneven surfaces, or inadequate lighting on someone else's property.
• Motor Vehicle Accidents Legal Services Legal representation for victims of car accidents, addressing liability, insurance claims, and compensation for injuries and damages, including coverage for Access-a-Ride, Lyft, hit-and-run, and other passenger/pedestrian scenarios.
• Truck Accidents Legal Services Legal representation for victims of commercial truck collisions and incidents, addressing liability and compensation against trucking companies and their insurers.
• Bus Accidents Legal Services Legal representation for victims of bus accidents involving public or private buses, including school bus and MTA bus incidents, addressing liability and negligence claims.
• Motorcycle Accident Legal Services Legal representation for motorcyclists injured in collisions due to another party's negligence, addressing liability and damages.
• Train Accident Legal Services Legal representation for victims of train derailments and railroad accidents, including cases involving transit system negligence.
• Plane Accident Legal Services Legal representation for families of victims of plane accidents, including aviation disaster and helicopter accident cases.
• Medical Malpractice Legal Services Legal representation for victims of medical negligence, including surgical errors, misdiagnosis, birth injuries, brain damage in babies, cerebral palsy, Erb's palsy, hospital negligence, dangerous drugs, military medical malpractice, and pharmacy/prescription errors.
• Sexual Abuse Legal Services Legal representation for survivors of sexual abuse and assault, including cases involving institutions, correctional institutions, adult survivors under the Adult Survivors Act, child victims under the Child Victims Act, and assault claims.
• Wrongful Death Legal Services Legal representation for eligible survivors pursuing compensation when a person's death is caused by negligence or misconduct.
• Mass Torts Legal Services Legal representation for large groups of people harmed by negligent or harmful actions, including Zantac, Opioid, Roundup, hip implant, hernia mesh, E-scooter lithium battery, lead poisoning, talcum powder, and Camp Lejeune water contamination claims.
• Product Liability Legal Services Legal representation holding manufacturers, distributors, and sellers responsible for injuries caused by defective or unsafe products, including Roundup injury, hip implant, hernia mesh, and E-scooter lithium battery cases.
• Defective Drugs Legal Services Legal representation for individuals harmed by pharmaceutical products with dangerous side effects or inadequate warnings, including dedicated Zantac and Opioid mass tort practice areas.
• Workers' Compensation Legal Services Legal representation for workers who have suffered injuries or illnesses as a result of their job, including Social Security Disability claims.
• Catastrophic Injury Legal Services Legal representation for victims of severe, life-altering injuries requiring extensive medical treatment and long-term care.
• Traumatic Brain Injury Legal Services Legal representation for victims of traumatic brain injuries resulting from accidents, covering long-term care and compensation.
• Railroad Worker Injury Legal Services Legal representation for railroad workers injured on the job under the Federal Employers' Liability Act.

Quantifiable outcome

• Nearly $1 billion in settlements and verdicts recovered for clients

Segments1 record

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Scale indicators3 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Weitz & Luxenberg: New York-based plaintiff personal injury firm with a strong mass tort and asbestos practice. Closely comparable in market geography, case types (construction, medical malpractice, product liability), and contingency fee model.
• Cellino Law: Buffalo/NYC-based personal injury firm with strong brand recognition built through heavy TV and out-of-home advertising. Comparable in contingency-fee plaintiff model, consumer acquisition approach, and brand-driven lead generation.
• Gair, Gair, Conason, Rubinowitz, Bloom, Hershenhorn, Steigman & Mackauf: Long-standing New York personal injury firm with strong results in construction, medical malpractice, and premises liability. Comparable on NYC geographic focus, plaintiff practice breadth, and trial reputation.
• Rheingold, Giuffra, Ruffo & Plotkin: New York-based personal injury and medical malpractice firm. Directly comparable on geographic market, plaintiff case types including medical malpractice and catastrophic injury, and contingency fee structure.
• Block O'Toole & Murphy: New York-based personal injury firm specializing in construction accidents, premises liability, and catastrophic injuries. Directly comparable on plaintiff-side case mix, NYC geographic focus, and trial-ready litigation posture.
• Jacob Fuchsberg Law Firm: New York personal injury and medical malpractice firm with a trial-focused reputation. Comparable on NYC market, plaintiff case mix, and contingency fee model with strong courtroom credentials.
• The Rothenberg Law Firm LLP: Regional plaintiff personal injury firm with offices in NY/NJ/Philadelphia. Comparable on regional geographic focus, contingency fee model, and multi-channel consumer advertising including TV and digital.
• The Cochran Firm: National plaintiff personal injury firm with a founder-led brand identity and significant mass tort practice. Comparable on contingency fee economics, branded consumer marketing, and personal injury case breadth.
• Parker Waichman LLP: New York-based personal injury and mass tort firm with national reach in pharmaceutical and medical device litigation. Comparable on contingency model, mass tort participation, and consumer-facing digital lead capture.
• Morgan & Morgan: The largest plaintiff personal injury firm in the US, operating on a contingency fee model with heavy consumer advertising and a national footprint. Directly comparable on business model, target customer, and mass tort participation.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• Xx.com/msllegal
• Facebookfacebook.com/MichaelSLamonsoff
• LinkedInlinkedin.com/company/law-offices-of-michael-s.-lamons

Revenue estimate

Valuation estimate

Number of profiles

Profiles13 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 The Law Offices of Michael S. Lamonsoff, PLLC