Litigation

Bona Law is a litigation boutique. We built the firm to try, win, and defend the kinds of cases that decide how companies are allowed to compete — antitrust and competition disputes, the monopolization battles that decide what dominant firms may do, the class actions and multidistrict litigation that grow out of them, the complex commercial fights that surround them, the false-advertising fights between competitors, and the appeals that ultimately resolve them.

Our litigation practice is national. We appear in federal and state courts throughout the United States, frequently opposite or alongside the largest law firms in the world. Clients hire us because we combine genuine antitrust depth — the kind usually found only in global firms — with the focus, speed, and partner-level attention of a boutique. Our teams are led by experienced partners, including former government enforcers and large-firm litigators, and every case is staffed to be tried, not just settled.

Litigation at Bona Law runs through six connected practices:


Antitrust Litigation

The core of the firm. We litigate price-fixing, distribution and dealer-termination, and other Sherman Act and Clayton Act disputes on both the plaintiff and defense side, in courts across the country. Antitrust cases are won by lawyers who understand the economics, the case law, and how enforcers think — it is what we write about and most of what we do.

Learn more: Antitrust Litigation


Monopolization & Exclusionary Conduct

Monopolization cases are their own discipline, and we handle both sides of them. We represent businesses harmed by dominant firms — in refusal-to-deal, exclusive-dealing, predatory-pricing, and platform cases, including antitrust cases against Big Tech — and we defend companies accused of monopolization and attempted monopolization. These cases turn on market power, economics, and exclusionary-conduct doctrine, a frontier we know as well as any firm in the country.

Learn more: Monopolization and Exclusionary Conduct


Antitrust Class Actions & MDL

We defend companies in antitrust class actions and multidistrict litigation — the highest-stakes form of antitrust exposure, where certification decisions and expert battles can determine nine- and ten-figure outcomes. Our work spans class certification, merits defense, expert strategy, and trial.

Learn more: Antitrust Class Actions & MDL


Complex Commercial Litigation

Competition disputes rarely arrive in a clean antitrust wrapper. We litigate the commercial cases that live at the competition line — trade secrets, business torts, civil RICO, contract and partnership disputes — for businesses whose real fight is over markets, customers, and reputation.

Learn more: Complex Commercial Litigation


Lanham Act & False Advertising

When a competitor lies about its products — or about yours — the fight is over customers and markets, and we litigate it that way. We bring and defend Lanham Act false-advertising and unfair-competition cases nationwide, including the published Ninth Circuit decision in Ariix v. NutriSearch, a leading precedent on rigged product ratings and paid reviews posing as independent.

Learn more: Lanham Act and False Advertising


Appellate Litigation

Appeals are a different craft from trials, and we treat them that way. Bona Law briefs and argues appeals in federal circuit courts and state appellate courts nationwide — both appeals of our own trial matters and appeals where trial counsel brings us in for the appellate stage. 

Learn more: Appellate Litigation


Selected Results


Why Clients Hire Bona Law for Litigation

Most litigation boutiques do not have real antitrust depth, and most antitrust groups sit inside conflict-laden global firms. Bona Law is the rare firm that offers both: a bench of antitrust specialists — including a former Chair of the American Bar Association’s Antitrust Law Section and attorneys who led investigation and litigation teams at the DOJ Antitrust Division, served in a state attorney general office and at the European Commission, and ran antitrust in-house at companies like AT&T and General Motors — and a boutique structure that keeps partners on the documents, the arguments, and the strategy. With more than 15 antitrust attorneys, we also have a deeper bench than most people expect from a boutique. And we are flexible on fees: for the right case, we consider contingency, hybrid, and other alternative fee arrangements, and we have experience working with litigation funders. We publish what we know: our attorneys write The Antitrust Attorney Blog and the legal resources library that courts, counsel, and businesses around the world rely on.

Bona Law is recognized in the Chambers Spotlight 2026 guides for antitrust in both California and New York.


Related Practices

Litigation risk rarely travels alone. Related Bona Law practices include Antitrust Investigations, Challenges to Anticompetitive and Unlawful Government Action, Labor Antitrust, and Mergers & Acquisitions.


Talk to a Litigator
If your company is facing — or considering — litigation where competition is at stake, contact Bona Law. If your client needs our litigation help, learn about co-counseling with Bona Law.