Top 15 Lawyers That Sue Companies in the US

Ever felt like a big company was playing by its own rules, you know, not playing fair, maybe even hurting people or small businesses, leaving you or others in the dust? It happens, right? And when it does, you need someone tough on your side. In a world where big businesses wield immense power, it’s reassuring to know there are legal warriors ready to step into the ring.

These are the lawyers that sue companies, the champions who hold powerful entities accountable. When you need lawyers that sue companies in the US, you’re looking for the best of the best. This article shines a spotlight on the top lawyers that sue companies, the individuals who have consistently demonstrated their skill, tenacity, and ability to win against formidable opponents.

We’re talking about the top lawyers that sue companies in the US, individuals who have shaped legal precedents and secured substantial victories for their clients. Whether it’s a fight over unfair competition, a class action for everyday people who got ripped off, or some other complicated legal mess, these are the people you want in your corner.

So, let’s get down to it. We’re going to introduce you to the best of the best, the lawyers who aren’t just good at what they do, they’re the best. You’ll get to know their stories, their big wins, and why they’re the ones you’d want to call if you ever found yourself needing to take on a corporate giant.

Criteria for Selection

To identify the top lawyers that sue companies in the US, we used several criteria that reflect their expertise and impact:

Success Rate: Lawyers with a high percentage of favorable outcomes in lawsuits were prioritized.

Notable Cases: Attorneys involved in landmark or high-profile cases that shaped legal precedents were included.

Specialization: Focus on areas like antitrust litigation, class actions, product liability, and corporate law.

Reputation: Inclusion in prestigious rankings such as “The Best Lawyers in America” or “Benchmark Litigation US”.

Client Impact: Ability to secure significant settlements or verdicts for clients.

Here’s a detailed look at the most accomplished litigation lawyers who specialize in suing companies in the US:

1. David Boies

Top 15 Lawyers That Sue Companies in the US | 2025 Updated List

David Boies is a highly respected American lawyer and the chairman of the law firm Boies Schiller Flexner LLP. He was born on March 11, 1941, in Sycamore, Illinois. Despite facing challenges with dyslexia, Boies went on to become one of the most successful lawyers in the United States.

Boies graduated from Yale Law School with honors and later earned an LL.M. from New York University. He began his career at Cravath, Swaine & Moore, where he became a partner before leaving to start his own firm in 1997.

Specialty: Antitrust Litigation and Corporate Disputes

Boies specializes in antitrust litigation and corporate disputes. Antitrust law is about ensuring companies don’t become too powerful and harm competition. He has represented both the U.S. government and major corporations in these types of cases.

Notable Cases

David Boies is famous for several landmark cases:

United States v. Microsoft Corp.: Boies led the U.S. government’s successful antitrust case against Microsoft. This case was significant because it challenged Microsoft’s dominance in the software industry.

Bush v. Gore: Although he lost this case, Boies represented Vice President Al Gore in the controversial 2000 presidential election dispute.

Hollingsworth v. Perry: Boies, along with Ted Olson, successfully challenged California’s Proposition 8, which banned same-sex marriage. This case was a major victory for LGBTQ+ rights.

Boies has also represented clients like American Express, Apple, and Oracle.

2. William Isaacson

William Isaacson is a highly respected lawyer and a partner at Paul, Weiss, Rifkind, Wharton & Garrison LLP. He is based in Washington, D.C., and is widely regarded as one of the top litigators of his generation.

Specialty: Antitrust and Commercial Litigation

Isaacson specializes in antitrust and commercial litigation. Antitrust law is about ensuring that companies don’t become too powerful and harm competition. He has a broad practice that includes handling complex cases involving price-fixing, unfair competition, and consumer class actions.

Additionally, he is skilled in commercial litigation, which involves disputes between businesses, and intellectual property (IP) cases, which deal with issues like copyright and trademark infringement.

Notable Cases

William Isaacson has been involved in many significant cases:

Defense of Tech Companies: Isaacson has successfully defended major tech companies in antitrust cases. For example, he defended Apple in a decade-long case related to iPods, securing a defense verdict after just a few hours of jury deliberation.

O’Bannon v. NCAA: Isaacson was part of the team that successfully challenged the NCAA’s rules on paying college athletes for their names, images, and likenesses. This case was a landmark victory for athletes’ rights.

Chinese Vitamin C Cartel Case: Isaacson was involved in a case against Chinese companies accused of price-fixing vitamin C. He secured a significant judgment in this matter.

Oracle vs. Rimini Street: Isaacson won a major copyright infringement case for Oracle against Rimini Street, securing a $50 million verdict and a broad injunction.

Ultimate Fighting Championship (UFC) Antitrust Case: Isaacson helped settle an antitrust class action against the UFC, which alleged that the UFC illegally dominated the market for elite MMA fighters and suppressed fighter pay.

3. Megan E. Jones

Megan E. Jones is a highly respected lawyer and a partner at Hausfeld LLP, based in the California Bay Area. She specializes in antitrust and class action lawsuits, focusing on recovering damages for companies affected by anticompetitive practices like price-fixing and trade restraints.

Specialty: Antitrust and Class Action Lawsuits

Jones has 19 years of experience in antitrust class actions. She is known for her expertise in leading large and complex cases involving price-fixing, tying, and other competition violations. Her work involves representing corporate plaintiffs in cartel recovery actions and leading significant class action cases.

Notable Cases

Megan Jones has been involved in several notable cases:

In re Local TV Advertising Litigation: She served as the sole lead counsel in this case.

In re Diisocyanates Antitrust Litigation and In re Beef Antitrust Litigation: Jones was co-lead counsel for both cases.

In re Blue Cross Blue Shield Antitrust Litigation: She was part of the Plaintiff Steering Committee.

In re Marriott International Customer Data Security Breach Litigation**: Also part of the Plaintiff Steering Committee.

4. Eric Cramer

Eric Cramer is the Chairman of Berger Montague, a well-respected law firm based in Philadelphia. He has been with the firm since 1995 and became its chairman in 2019. Cramer is known for his expertise in antitrust class actions and complex litigation.

Specialty: Antitrust Class Actions and Complex Litigation

Cramer specializes in antitrust law, which involves ensuring that companies don’t engage in unfair practices that harm competition. He leads multiple significant antitrust class actions across the U.S., representing clients in various industries. His work includes cases involving price-fixing, monopolization, and other forms of corporate misconduct.

Notable Cases

Eric Cramer has been involved in several notable cases:

Mixed Martial Arts Fighters vs. UFC: He represented MMA fighters in a class action lawsuit against the UFC, alleging anticompetitive practices.

Broiler Chicken Growers vs. Major Chicken Integrators: Cramer secured $169 million in settlements for chicken growers against major companies.

City of Asheville vs. HCA/Mission Hospital: He led a case alleging monopolization by a hospital in North Carolina.

Elite Universities Financial Aid Case: Cramer represented students in a case against seventeen elite universities, securing $284 million in settlements so far.

Ivy League Athletes vs. Ivy League: He is involved in a case alleging that Ivy League schools colluded to block athletic scholarships.

Internet Publishers vs. Google: Cramer is part of a massive antitrust class action against Google.

5. Michael Hausfeld

Michael Hausfeld is a highly respected lawyer and the Chairman Emeritus of Hausfeld LLP, a law firm he founded. He is known for his pioneering work in antitrust law and his commitment to human rights litigation.

Specialty: Antitrust and Human Rights Litigation

Hausfeld specializes in antitrust law, which involves ensuring that companies don’t become too powerful and harm competition. He has a long record of success in antitrust cases, focusing on issues like monopolization, price-fixing, and unfair business practices. Additionally, he has been involved in groundbreaking human rights cases, addressing issues such as discrimination and international law violations.

Notable Cases

Michael Hausfeld has been involved in several notable cases:

Ed O’Bannon v. NCAA: Hausfeld was the lead attorney in this landmark antitrust case, which challenged the NCAA’s rules on paying college athletes for their names, images, and likenesses. The case was a significant victory for athletes’ rights.

Holocaust Victims vs. Swiss Banks: Hausfeld won a $1.25 billion settlement for Holocaust victims whose assets were wrongfully retained by Swiss banks during and after World War II.

Texaco Racial Discrimination Case: He secured a $176 million judgment for African-American employees who accused Texaco of racial discrimination.

Exxon Valdez Oil Spill: Hausfeld represented Native Alaskans affected by the oil spill and negotiated significant compensation.

Genetically Engineered Foods and Healthcare Companies: Hausfeld has been co-lead counsel in antitrust cases against these industries, addressing monopolistic practices.

6. Richard Koffman

Richard Koffman is a highly respected lawyer and a partner at Cohen Milstein Sellers & Toll PLLC, based in Washington, D.C. He specializes in antitrust and civil rights litigation, focusing on cases involving price-fixing, monopolization, and other forms of corporate misconduct.

Specialty: Antitrust and Civil Rights Litigation

Koffman has over 30 years of experience in litigating antitrust and civil rights cases. He represents victims of corporate wrongdoing, including consumers and employees affected by price-fixing, wage suppression, and discrimination. His work involves complex class action lawsuits, where he often serves as lead or co-lead counsel.

Notable Cases

Richard Koffman has been involved in several notable cases:

Urethanes Antitrust Litigation: This case resulted in the second-largest price-fixing verdict in U.S. history and the largest jury verdict of 2013. Koffman served as court-appointed lead counsel.

Other Antitrust Cases: He has led numerous landmark antitrust class actions, focusing on issues like market monopolization and unfair business practices.

7. Brian Ratner

Brian Ratner is a highly respected lawyer and the Global Co-Chair of Hausfeld LLP, a leading global law firm. He is based in Washington, D.C., and has extensive experience in international antitrust and complex litigation.

Specialty: International Antitrust and Complex Litigation

Ratner specializes in handling complex antitrust cases that involve global cartels and cross-border disputes. He represents U.S. and international businesses in both U.S. and European courts, focusing on issues like price-fixing and monopolization. His work involves litigating and resolving antitrust claims at all stages, from discovery to settlement.

Notable Cases

Brian Ratner has been involved in several notable cases:

Vitamins Antitrust Litigation: Ratner was one of the lead counsel in this case, which involved a global price-fixing conspiracy. The case settled for over $1 billion.

Vitamin C Antitrust Litigation: He worked on this case, which resulted in a significant judgment for direct purchasers affected by a price-fixing conspiracy.

Auto Parts Cartel Damage Claims: Ratner has represented car manufacturers in their claims against auto parts suppliers involved in global cartels. He has helped these companies achieve substantial recoveries.

American Express Anti-Steering Rules Antitrust Litigation: Ratner serves as one of the lead lawyers representing the class in this case.

Pre-stressing Steel Cartel: He has worked on cases involving cartels in the steel industry.

8. Daniel Brockett

Daniel Brockett is a highly respected lawyer and the Chair of Quinn Emanuel’s Financial Institution Litigation practice. He is based in New York City and is known for his expertise in antitrust and securities litigation.

Specialty: Antitrust and Securities Litigation

Brockett specializes in handling complex cases involving antitrust violations and securities fraud. He has extensive experience in litigating against major financial institutions, focusing on issues like price-fixing, market manipulation, and securities fraud. His work involves representing large institutional clients in federal securities, antitrust, and other suits against major Wall Street banks and other defendants.

Notable Cases

Daniel Brockett has been involved in several notable cases:

Credit Default Swaps Antitrust Litigation: Brockett was co-lead counsel in this case, securing a significant settlement of approximately $1.9 billion for the plaintiff class.

ISDAfix Interest Rate Benchmark Case: He represented a class of sophisticated investors in this case, achieving a partial settlement of $508 million.

Gold Antitrust and Commodity Manipulation Case: Brockett served as co-lead counsel, alleging that multiple banks manipulated gold prices.

Securities Lending Antitrust Litigation: He helped secure a proposed $499 million settlement with banks like Goldman Sachs and JPMorgan, along with injunctive relief to promote market competition.

Mortgage-Backed Securities Litigation: Brockett acted as lead counsel for clients like Allstate Corporation and Prudential Financial in cases against major banks such as JP Morgan and Goldman Sachs.

9. Melinda Coolidge

Melinda Coolidge is a highly respected lawyer and the US Managing Partner at Hausfeld LLP, a leading global law firm. She is based in Washington, D.C., and has extensive experience in antitrust and consumer protection litigation.

Specialty: Antitrust and Consumer Protection Litigation

Coolidge specializes in representing businesses and classes of consumers affected by antitrust violations, such as price-fixing and monopolization. She also focuses on consumer protection cases, addressing deceptive practices by large companies. Her work involves complex class action lawsuits, where she often serves as lead or co-lead counsel.

Notable Cases

Melinda Coolidge has been involved in several notable cases:

In re Broiler Chicken Grower Antitrust Litigation: Coolidge played a key role in this case, which involved allegations of price-fixing in the broiler chicken industry. She received an award for her outstanding work on this case.

In re Vitamin C Litigation: Coolidge was part of the team that secured significant judgments against Chinese companies accused of price-fixing vitamin C.

Google Play Developer Antitrust Litigation: She was recognized for her work on this case, which involved allegations of monopolistic practices by Google.

10. Karin Garvey

Karin Garvey is a highly respected lawyer and a Partner at Scott+Scott Attorneys at Law LLP, based in New York City. She specializes in antitrust and competition class action litigation, although she is also experienced in securities class actions.

Specialty: Antitrust and Securities Class Actions

Garvey focuses on representing victims of anticompetitive conduct in cases involving price-fixing, monopolization, and market allocation. She has extensive experience in managing complex, multi-jurisdictional cases from initial development through resolution.

Her background includes over 25 years of litigation experience, with 18 years spent on the defense side before transitioning to the plaintiffs’ side. This unique blend of experience allows her to strategically leverage her knowledge to benefit her clients.

Notable Cases

Karin Garvey has been involved in several notable cases:

In re Surescripts Antitrust Litigation: She represented a proposed class of pharmacies alleging that Surescripts monopolized the market for e-prescription services.

Fusion Elite All Stars v. Varsity Brands, LLC: Garvey was part of the team alleging monopolization and conspiracy to monopolize in the All Star Cheerleading market.

In re Sensipar (Cinacalcet HCl) Antitrust Litigation: She represented indirect purchasers in a case involving alleged delays in generic competition for the drug Sensipar.

In re Xyrem (Sodium Oxybate) Antitrust Litigation: Garvey was appointed to the Plaintiff’s Steering Committee in this case, which involved allegations of anti-competitive pay-for-delay agreements.

11. Brent Johnson

Brent Johnson is a highly respected lawyer and a Partner at Cohen Milstein Sellers & Toll PLLC, based in Washington, D.C. He co-chairs the firm’s Antitrust practice and leads new case investigations.

Specialty: Antitrust and Consumer Protection Cases

Johnson specializes in antitrust and consumer protection law, focusing on cases involving unfair business practices such as price-fixing, monopolization, and wage suppression. He represents consumers and workers in class action lawsuits against major corporations, ensuring they receive fair compensation for harm caused by these practices.

Notable Cases

Brent Johnson has been involved in several notable cases:

In re Broiler Chicken Antitrust Litigation: Johnson led the co-lead counsel team representing consumers in a case alleging that major chicken producers conspired to raise prices. As of July 2023, settlements totaled $183.9 million.

Jien v. Perdue Farms, Inc.: He represented poultry plant workers alleging that major chicken producers suppressed their wages. Settlements reached $398 million.

Brown v. JBS USA Food Company: Johnson led the co-lead counsel team for beef and pork plant workers claiming wage suppression by major meat producers. Settlements exceeded $200 million.

12. Kellie Lerner

Kellie Lerner is a highly respected antitrust lawyer who has recently become a Managing Partner at Shinder Cantor Lerner LLP, a boutique law firm specializing in antitrust law. Prior to this, she was a senior partner at Robins Kaplan LLP in New York.

Specialty: Antitrust and Trade Regulation

Lerner specializes in antitrust and trade regulation, focusing on cases involving monopolistic practices, price-fixing, and market allocation. She has nearly 25 years of experience in litigating high-stakes antitrust disputes across various industries, including healthcare, technology, and entertainment.

Notable Cases

Kellie Lerner has been involved in several notable cases:

BCBSM, Inc. v. Vyera Pharmaceuticals, LLC et al.: She secured a settlement valued at $28 million for a class of third-party payers alleging that Martin Shkreli and his former companies illegally monopolized the market for the life-saving drug Daraprim.

In re Merck Mumps Vaccine Antitrust Litigation: Lerner served as co-lead counsel, representing healthcare payers who alleged a decade-long scheme to maintain an unlawful monopoly in the market for the mumps vaccine.

In re Passenger Vehicle Replacement Tires Antitrust Litigation: She was co-lead counsel on behalf of direct purchasers alleging a conspiracy to fix the prices of passenger vehicle replacement tires.

In re Axon VIEVU Antitrust Litigation: Lerner was co-lead counsel for a putative class of direct purchasers of conducted energy devices, body-worn cameras, and related accessories and services.

13. James Robertson Martin

James Robertson Martin, often referred to as Jim Martin, is a highly respected lawyer and a Partner at Zelle LLP, based in Washington, D.C. He specializes in antitrust and business litigation, handling complex cases on a national and international scale.

Specialty: Antitrust and Business Litigation

Martin focuses on antitrust law, which involves ensuring that companies don’t engage in unfair practices that harm competition. He also handles business litigation, including disputes related to contracts, financial services, and class actions. His expertise extends to counseling companies on antitrust compliance and representing them in high-stakes litigation.

Notable Cases

Jim Martin has been involved in several notable cases:

LIBOR Antitrust Litigation: Martin represented Freddie Mac and the FDIC as receiver for closed banks in this case, which involved allegations of interest rate manipulation by major banks.

German Automotive Manufacturers Antitrust Litigation: He was appointed to the Plaintiffs’ Steering Committee, representing direct purchaser plaintiffs.

Dow Chemical Price-Fixing Case: Martin represented 11 companies in a price-fixing case against Dow Chemical, securing a $400 million settlement.

ZF Meritor, LLC v. Eaton Corp.: He represented the maker of heavy-duty transmissions in a case alleging monopolistic practices, resulting in a $500 million settlement.

Novell, Inc. v. Microsoft Corp.: Martin represented the owners of WordPerfect in a case alleging unlawful monopolization by Microsoft.

14. Steig Olson

Steig Olson is a highly respected lawyer and a Partner at Quinn Emanuel Urquhart & Sullivan LLP, based in New York City. He specializes in antitrust and competition law, representing both corporate plaintiffs and defendants in high-stakes cases.

Specialty: Antitrust and Competition Law

Olson focuses on antitrust and competition law, handling complex cases involving price-fixing, market manipulation, and other forms of unfair competition. His practice includes class actions and “opt-out” actions, where he represents clients in regulatory matters related to competition issues. Olson’s versatility allows him to effectively represent clients on both sides of antitrust disputes.

Notable Cases

Steig Olson has been involved in several notable cases:

Pacific Steel Group v. Commercial Metals Company: Olson served as lead trial counsel, securing a $110 million jury verdict (pre-trebling) for Pacific Steel Group in an antitrust case involving rebar manufacturing in California.

The Home Depot v. Visa and MasterCard: He represents The Home Depot in an antitrust lawsuit against Visa and MasterCard, alleging unlawful practices that inflated fees for merchants accepting credit and debit cards.

In re Credit Default Swaps Antitrust Litigation: Olson was one of the Court-appointed Lead Counsel, representing investors in credit default swaps. The case settled for over $1.86 billion, one of the largest antitrust class actions in history.

United Parcel Service, Inc. (UPS): He serves as lead counsel for UPS in matters before the Postal Regulatory Commission, focusing on competition in parcel delivery markets.

IQVIA (formerly IMS Health): Olson represents IQVIA in trade secrets and antitrust litigation against Veeva Systems.

The City of Philadelphia: He represents the city in multiple antitrust actions, including a case against Wall Street banks for allegedly suppressing the London Interbank Offered Rate (LIBOR).

15. Sharon Robertson

Sharon Robertson is a highly respected lawyer and a Partner at Cohen Milstein Sellers & Toll PLLC, based in Washington, D.C. She specializes in antitrust and consumer protection litigation, with a particular focus on pharmaceutical antitrust cases.

Specialty: Antitrust and Consumer Protection Litigation

Robertson is a leader in complex, multi-district class actions, especially in pharmaceutical antitrust litigation. She focuses on cases involving “pay-for-delay” agreements, where brand-name drug manufacturers allegedly collude with generic manufacturers to delay the release of cheaper generic drugs. She also handles cases involving generic price-fixing, where generic drug manufacturers are accused of conspiring to inflate prices.

Notable Cases

Sharon Robertson has been involved in several notable cases:

In re Urethanes Antitrust Litigation: She was part of the trial team in this case, which resulted in a $400 million verdict (later tripled to $1.2 billion), the largest price-fixing verdict in U.S. history.

In re Nexium Antitrust Litigation: Robertson was part of the trial team in this case, the first pharmaceutical antitrust case to go to trial after the landmark Supreme Court decision in FTC v. Actavis.

In re Loestrin 24 FE Antitrust Litigation: She helped secure a $63.5 million settlement in this case, which involved allegations of generic suppression.

In re Solodyn Antitrust Litigation: Robertson played a significant role in coordinating discovery, leading to a $43 million recovery for the class.

Rotavirus Antitrust Litigation: She represents the City of Baltimore in a case alleging that Merck’s bundled loyalty program for the rotavirus vaccine is a scheme to maintain its monopoly.

Conclusion

When it comes to suing companies, choosing the right lawyer can make all the difference. The attorneys listed above are among the best in the United States for corporate lawsuits, with proven track records of success, expertise in complex legal areas, and a commitment to justice for their clients.

These professionals have not only secured significant settlements but have also shaped legal precedents that impact industries nationwide.

If you’re considering legal action against a corporation, these top-performing lawyers are worth consulting to ensure your case is handled effectively.

Frequently Asked Questions (FAQs)

1. What do lawyers that sue companies specialize in?

Lawyers who sue companies typically specialize in areas like antitrust law, consumer protection, product liability, securities fraud, and class action lawsuits.

2. How do I choose the best lawyer to sue a company?

Look for an attorney with a strong track record of success, expertise in your specific type of case, positive peer reviews, and experience handling similar lawsuits.

3. What types of cases do these lawyers handle?

They handle various cases such as price-fixing allegations, product defects, shareholder disputes, employment violations, and breach of contract claims.

4. Are these lawyers expensive to hire?

Many top corporate litigators work on contingency fees for class actions or consumer lawsuits, meaning they only get paid if you win your case or secure a settlement. However, costs may vary depending on the complexity of your case.

Top 15 Lawyers That Sue Companies in the US | 2025 Updated List

Criteria for Selection