Bilzin Sumberg Baena Price & Axelrod LLP has developed a strong profile through its focus on opt-out litigation in major multidistrict proceedings. The antitrust group advises clients on whether pursuing opt-out claims is appropriate and represents them through trial and appeal, achieving significant recoveries often exceeding class action outcomes.

Cuneo, Gilbert, and LaDuca focus on challenging monopolistic conduct and price-fixing schemes, representing consumers and small businesses in disputes against corporations. Its experience includes matters involving companies such as Apple and Koch Industries, as well as an expanding portfolio of technology-related antitrust cases, addressing competition issues in digital markets and software licensing.

Zaiger Linden Roberti & Pepe LLC continues to develop as a go-to boutique for clients facing high-stakes commercial and antitrust disputes. Led from Washington DC by the highly experienced John Roberti, the practice combines the strategic depth of BigLaw with a boutique model. The firm is recognized for its approach to complex litigation, pioneering novel procedural structures to overcome barriers that would otherwise deny clients access to meaningful recovery. Its practice spans price-fixing, platform monopolization, and class and mass action litigation.

Berger Montague

Cohen Milstein Sellers & Toll PLLC is home to a well-established antitrust practice with a strong track record in complex enforcement matters. The team is particularly active in antitrust class actions and trial work, handling claims across price-fixing, wage suppression, group boycott, and monopolization theories. Their experience spans a broad range of industries, including real estate, financial services, professional sports, agriculture, and pharmaceuticals. Recently, the practice was involved in a series of high-profile matters, with settlements and verdicts during the period totaling approximately $2.5bn. These included large-scale, multi-party proceedings and matters raising novel legal and economic issues. Based out of Washington DC, the group is co-led by managing partner and experienced trial lawyer Benjamin Brown, alongside antitrust and labor specialist Brent Johnson. Under their leadership, the team continues to shape the development of private antitrust litigation in the US through large, complex class-action proceedings.

Hausfeld LLP is widely recognized for its expertise in antitrust and class action litigation, handling complex, multi-party matters across sectors including financial services, consumer goods, and industrial equipment. The firm is particularly noted for its involvement in cases that intersect with government enforcement actions. Having secured billions of dollars in recoveries across more than 100 settlements, the team is valued for its strategic case management and consistent performance in large-scale class actions. San Francisco-based co-chair Megan Jones focuses on recovering damages for companies harmed by antitrust cartel conduct. New York-based co-chair Scott Martin frequently advises corporate clients on resolving regulatory investigations. Brian Ratner, based in Washington DC, is noted for his experience across all stages of global antitrust litigation, while Melinda Coolidge, also based in DC, is recognized for her strength in private enforcement and maximizing client recoveries. Michael Hausfeld operates from Washington DC and is widely regarded for his role in landmark competition cases in the US and internationally.

Quinn Emanuel Urquhart & Sullivan, LLP is respected for its ability to secure landmark outcomes for both claimants and defendants in complex competition disputes. Frequently appointed to leadership roles in high-value class actions and major opt-out proceedings, the team also delivers strategic victories for corporate clients facing monopolization and market-manipulation claims. Co-chair Sami Rashid brings extensive experience acting for plaintiffs in class actions and individual antitrust litigation. In Los Angeles, Kevin Teruya co-leads, focusing on high-stakes commercial disputes, with particular emphasis on antitrust, unfair competition, and IP litigation. Daniel Brockett is recognized for his work in securities, commodities, and structured finance and derivatives litigation. Steig Olson places emphasis on high-stakes antitrust and competition litigation, representing corporate plaintiffs in commercial disputes and regulatory proceedings. Will Sears, from Los Angeles, leverages his understanding of plaintiff strategy, claim valuation, and settlement dynamics to anticipate and shape litigation outcomes. All individuals are based in New York unless otherwise mentioned.

Susman Godfrey LLP maintains a strong position in the market, successfully representing plaintiffs across a broad spectrum of industries, including pharmaceuticals, financial services, and consumer products. The firm is routinely entrusted with monopolization, price-fixing, and market-allocation disputes, recovering significant settlements on behalf of plaintiffs. Los Angeles-based managing partner Kalpana Srinivasan is renowned for her trial strength and strategic acuity, representing clients in litigation across the country. Bringing a wealth of litigation expertise, Marc Seltzer repeatedly takes on leadership roles in price-fixing, securities fraud, and trade secret cases. In New York, Bill Carmody is nationally recognized for trying bet-the-company matters for plaintiffs.

Boies Schiller Flexner LLP is noted for handling plaintiff-side litigation cases with broader market implications, regularly instructed on complex matters involving technology platforms, financial institutions, and pharmaceutical companies. Recent work includes antitrust claims challenging alleged monopolistic and exclusionary conduct by Google, alongside price-fixing and group boycott allegations in the financial services and payment systems sectors. The practice also maintains a strong presence in healthcare antitrust litigation, acting in large, multi-defendant multidistrict proceedings involving pay-for-delay, monopolization, and market-allocation theories. The team is led from Washington DC by experienced trial lawyer James Denvir, alongside Michael Mitchell, with a particular focus on class actions and multidistrict litigation. In New York, the practice includes leading antitrust litigator David Boies and Philip Korologos, who represents high-profile and high-net-worth clients in complex competition disputes.

DiCello Levitt is home to an “experienced group of litigators used to handling large, complex cases in the class action area”. The practice is known to initiate cases and advance claims involving price-fixing, market allocation, and monopolization across industries. The group represents a broad client base, including businesses, institutional investors, and consumers. Gregory Asciolla leads the team, regularly appointed to leadership roles in federal antitrust cases throughout the country. A seasoned litigator, Alexander Barnett represents consumers, public entities, and businesses in class actions arising from antitrust violations and unfair competition. Utilizing her prior government service, Geralyn Trujillo brings a unique perspective to litigating antitrust matters. The firm has been strengthened by the recent additions of Carrie Syme in April 2025 and Steven Groopman in December 2025. All individuals are based in New York.

Joseph Saveri Law Firm, LLP has a notable emphasis on antitrust and competition law across an array of industries, representing individuals who have been impacted by monopolistic business practices. With deep trial expertise, the team combines litigation readiness with strategic innovation, securing significant recoveries in antitrust and class litigation for victims of monopolization, reverse-payment schemes, and other anticompetitive conduct. Founding partner Joseph Saveri leads the team with extensive civil litigation experience in state, federal, and international arenas. Cadio Zirpoli specializes in antitrust suits, covering a variety of industries, including electronics, pharmaceuticals, and financial institutions. Known for a pragmatic approach to case litigation, Ronnie Spiegel brings a wealth of experience litigating and managing all phases of antitrust matters. All attorneys mentioned are based in San Francisco.

Recognized for its claimant-side antitrust practice, Scott + Scott investigates and pursues damages arising from price-fixing, bid-rigging, and market allocation across global markets. The firm has secured significant recoveries for clients in the financial services, agriculture, and real estate sectors and is increasingly active in technology-driven disputes, including matters involving AI and digital advertising. Managing partner David Scott advises multinational corporations and institutional investors on cartel damages and complex financial litigation, with a strong track record across competition and securities matters. Sylvia Sokol co-leads the practice, leading monopolization matters across key industrial and financial sectors. Karin Garvey leverages prior defense-side experience to manage and try multi-jurisdictional antitrust cases, representing victims of cartel and monopolization conduct. All attorneys are based in New York.

Berman Tabacco is noted for its antitrust services, prosecuting monopolization, price-fixing, and boycott matters, among other types of anticompetitive conduct. Representing clients from companies and services to public pension funds and individual consumers, the team has successfully recovered substantial settlements for victims of antitrust violations. In San Francisco, Joseph Tabacco and Todd Seaver co-lead the practice, bringing a wealth of litigation expertise to the antitrust-focused group. Matthew Pearson, also based in San Francisco, is a key contact for institutional investors and consumers, litigating matters involving antitrust violations and securities fraud. Boston’s Patrick Egan is recognized for his work securing significant recoveries in fraud and market manipulation matters. Steven Groopman departed the firm in October 2025.

A dedicated antitrust boutique firm, Mogin Law LLP represents clients through litigation before federal and state courts nationwide. The firm also regularly advocates on clients’ behalf before the Department of Justice, the Federal Trade Commission, and state legislatures. Drawing on the combined experience of litigators, economists, and former government attorneys, the team manages cases from investigation through final settlement distribution, providing end-to-end support across the class action lifecycle. In San Diego, managing partner Daniel Mogin leads the group, focusing on antitrust and unfair competition litigation, regularly serving as counsel on multidistrict proceedings.

Winston Taylor

Zelle LLP has a notable emphasis on antitrust and is known for its deep experience in competition litigation and strong institutional client relationships. With a focus on high-impact individual recovery actions for corporate plaintiffs and antitrust class actions for direct and indirect purchasers, the firm has secured significant recoveries for victims of antitrust violations. It continues to represent major institutions and private plaintiffs in multidistrict litigation across the country. Based in Oakland, Judith Zahid co-chairs the group and is experienced in representing plaintiffs in high-profile price-fixing and monopolization matters, with a particular focus on working with industry and economic experts. Washington DC’s co-chair, James Robertson Martin, is reputed for his work in representing corporations, financial institutions, and federal agencies in all aspects of antitrust and commercial litigation.