Herbert Smith Freehills Kramer is at the forefront of advertising litigation in the US, representing large domestic advertisers, pharmaceutical companies, consumer product clients, retailers and software firms. The firm is instructed by global brands to handle false advertising cases under the Lanham Act. It has also been active in consumer class actions, National Advertising Division (NAD) and National Advertising Review Board (NARD) challenges. Norman Simon chairs the advertising litigation practice in New York and specializes in representing clients in Lanham Act cases and class action litigation such as consumer fraud statues. Eileen Patt is a leading civil litigator who mainly represents brands in false advertising disputes and challenges before the NAD. Commercial litigation specialist Boaz I. Cohen is also a key part of the advertising litigation team. The firm also supports its disputes practice with its advisory team which assists with providing clearance for advertising copy and advises on claim substantiation.

A&O Shearman's advertising litigation practice is based in Austin and led by Saul Perloff who is experienced in both prosecuting and defending a range of advertising disputes. The firm is sought out for its expertise in false advertising and unfair competition expertise. The firm often serves life sciences clients such as biopharmaceutical companies, biologics and medical device companies. Other key industries include consumer products, financial services, food and beverage. False Claims Act and Telephone Consumer Protection Act violations that are brought in class actions are also handled by the practice.

Debevoise & Plimpton LLP excels at IP-related advertising litigation involving trade marks as well as litigating false advertising disputes in court before the FTC, FDA and NAD. The team works closely together with scientists and statisticians to substantiate client’s advertising claims. A stand-out area of expertise for the firm is prosecuting and defending against requests for preliminary injunctions. Practice head David Bernstein leads the team from San Francisco and is noted for his specialism in trade mark claims including acting as a domain name arbitrator and mediator in trade mark cases. In New York, Megan Bannigan focuses on trade mark and copyright litigation, Michael Schaper handles civil litigation and Jared Kagan is well-versed false advertising, copyright, trade mark and defamation cases. Over in Washington DC, Paul Rubin is the go-to for FTC investigations and disputes before the NAD.

Kirkland & Ellis LLP has a strong advertising, marketing and promotions team which is well-equipped to assist clients in a number of contentious issues. False advertising claims, FTC investigations, consumer class actions and trade mark litigation are all key focal points of the group. Defending consumer class actions and consumer fraud actions are where the team stands out. The team is split across Chicago, Washington DC, Los Angeles and New York. In Chicago, Ross Weisman leads the team and is an expert in defending and challenging advertising and marketing claims, while Robin McCue specializes in IP litigation. Over in Washington DC, Gregg LoCascio advises clients as lead counsel on a mix of IP and commercial litigation matters and Richard Cunningham is the go-to for consumer protection claims. Robyn Bladow is well-versed in class actions and resides in Los Angeles, while Dallas and Washington DC-based Olivia Adendorff  handles a mix of false advertising, consumer class actions and FTC investigations.

The false advertising practice at Patterson Belknap Webb & Tyler LLP is known for its expertise in the advertising space, particularly assisting brands from food and beverage, cosmetics, pharmaceutics and other key areas in high-stakes litigation and regulatory proceedings. The firm has been active in consumer class actions over the last year involving issues such as labeling issues. Practice head Steven Zalesin leads the New York-based team and is an authority on false advertising cases, having represented both plaintiffs and defendants in trial and appellate courts. Jane Metcalf is noted for her expertise in commercial litigation, representing clients in false advertising claims, class actions and ligation involving FDA-regulated products. Pharmaceutical, dietary supplement, cosmetic, insurance and finance clients area all served by false advertising specialist Joshua Kipnees.

Katten's advertising, marketing and promotions practice is headed up by Christopher Cole in Washington DC, and it is noted for its expertise across contentious advertising matters. The team defends its clients in class actions, false advertising litigation, First Amendment issues, Lanham Act cases and unfair competition laws. Typical industries the team advises include consumer products, food and beverage, fashion, medical and technology. Cole is a specialist litigator who excels in representing technology and brands in consumer class actions brought by competitors, regulators and claimants. Kristin Achterhof is a first-chair trial attorney based in Chicago who leads on IP disputes and Lanham Act cases. Washington DC-based Michael Justus is experienced in handling contentious issues in front of the FTC and NAD as well as being well-versed in AI and IP.

Kelley Drye & Warren LLP is known for its expertise in defending and bringing NAD challenges, assisting clients with evaluating data, assessing statistical issue and analyze surveys. The firm is well-versed in successfully dismissing case claims on dispositive motions before discovery. Other than NAD cases, the team also represents clients in state and federal consumer class actions related to labelling and advertising claims, deceptive trade and pricing. Clients of the team range from large domestic clients to multinational corporations. Practice head Lauri Mazzuchetti resides in New Jersey and leads on consumer class actions and commercial litigation for major US brands. On the New Jersey team, Geoffrey Castello handles false advertising and consumer product litigation. Co-head John Villafranco heads up the Washington practice and has a wealth of experience proving that his client's advertising and marketing campaigns are not deceptive. He is also skilled in defending C-suite executives from individual liability cases brought by regulators. New York-based Jaclyn Metzinger and James Saylor are both in active in consumer class actions.

Loeb & Loeb LLP‘s advertising disputes practice is jointly led out of New York and Chicago by advertising experts David Mallen and Thomas Jirgal, respectively. The firm is the go-to for NAD disputes work, regularly representing advertisers in a variety of issues from comparative and environmental claims to disputes involving native advertising, product packaging and pricing. The team is well-versed in all types of NAD procedures including complex track which it has actively assisted clients with since its inception in 2020. The firm also represents clients in advertising litigation outside of the NAD such as Lanham Act litigation, consumer class actions and FTC investigations. Jirgal has acted as lead counsel for advertising clients before the NAD for a wide range of industries including entertainment, communications, consumer goods and personal care. Mallen utilizes his previous experience as former deputy director of the NAD to defend and challenge NAD claims. In Chicago, Libby O'Neill focuses on advertising claim substantiation and disputes as well as promotions.

Morrison Foerster are class action specialists able to handle a range of consumer class actions brought in California and New York. The team represents food and personal care manufacturers and distributors in misbranding class actions and false advertising litigation related to ingredient claims. Technology and life sciences clientele also seek out the practice for representation in advertising claims and class actions. Based in San Francisco, Tiffany Cheung excels in class action litigation often handling cases involving marketing and privacy claims. Also residing in San Francisco Alexis Amezcua represents clients in proceedings involving unfair competition and deceptive trade practice law, while Claudia Vetesi is the go-to for competitor advertising disputes and NAD challenges. Los Angeles-based Purvi Patel focuses on representing retail and e-commerce clients in advertising and unfair competition cases. Erin Bosman chairs the advertising and litigation group from San Diego and co-head Katie Viggiani leads from New York on advertising claims.

Weil, Gotshal & Manges LLP specializes in representing multinational corporations in prosecuting and defending against Lanham Act false advertising cases as well as representing clients in consumer class actions related to false advertising, unfair competition and deceptive business practices. The team combines the firm's expertise in IP, consumer protection, antitrust and litigation and media to fully assist clients in advertising and marketing litigation. Practice head Drew Tulumello sits in Washington DC and is a renowned first-chair trial lawyer and US Supreme Court advocate who excels in defending brands in class actions related to product advertising claims. Co-leading the practice alongside Tulumello in Washington DC is Arianna Scavetti who is the go-to for cases involving product labeling and marketing which is claimed to be false or misleading. In Silicon Valley, David Singh leads the litigation team and class actions practice, advising fortune 500 companies on false advertising cases.

DLA Piper LLP (US)‘s advertising litigation group unites the firm’s knowledge in trade mark, copyright and media to advise multinational clients on litigation involving consumer products and retail. The team focuses on false advertising and regulatory issues, Lanham Act cases, trade mark and patent litigation. It is particularly well-versed in cross-border IP disputes and IP issues involving the federal government. Tamar Duvdevani leads the team from New York alongside Gina Durham and centers her practice on false litigation advertising cases and right-of-publicity issues in front of federal courts. Melissa Reinckens resides in San Diego and is well-versed on false advertising, trade mark, trade dress and trade secret disputes. Kevin Fee sits in Washington DC and is the go-to for false advertising cases before trial and appellate courts.

Frankfurt Kurnit Klein & Selz PC handles a mix of advertising litigation, class actions and matters before the National Advertising Division (NAD) in both state and federal courts for national and international brands and advertising agencies. The team is well-equipped to handle disputes before federal and state agencies such as cases before the FTC involving native advertising, influencers and claim substantiation. The practice is jointly led by Jason Howell and Brian Murphy. Kimberly Maynard leads on false advertising and trade mark issues, while Terri Seligman is the go-to for NAD matters where she represents both advertisers and challengers. Hannah Taylor advises clients on advertising compliance obligations. Also noted is Katelyn Patton who advises on a mix of advertising, marketing and IP issues. The firm recently strengthened its practice with the hire of Howell, in January 2025, from Perkins Coie LLP, while Holly Melton joined from Crowell & Moring LLP in May 2025.

Venable LLP's Washington-based advertising and marketing practice advises advertising companies, automotive, retail, food and beverages as well as healthcare companies in advertising litigation. The team is also the go-to for trade associations. Common cases include unfair competition, class actions and NAD proceedings. The team has been particularly active in the food and beverages space, advising on issues related to packaging, definitions of produce such as 'pasture-raised', dietary supplement marketing and slack fill. Roger Colaizzi chairs the practice and is well-versed in time-sensitive retail litigations, Lanham Act false advertising and FTC regulatory issues. Daniel S. Silverman resides in Los Angeles and leads on food and average consumer class actions.

Winston & Strawn LLP's complex commercial litigation practice has strong capabilities in advertising litigation, serving as counsel, lead trial counsel and appellate counsel in a class action claims related to false or misleading labels involving ingredients. The team also defends clients in pricing and warranty cases and represents consumer brands in product recalls. Privacy litigation is also a key area of the practice which assists clients in privacy-related advertising litigation and class actions. Team lead Ronald Rothstein resides in Chicago and leads on claims related to violation of unfair competition law, false advertising law as well in consumer class actions. Los Angeles-based Amanda Groves is sought out for her expertise in handling cases involving California's laws and regulations such as consumer fraud statues and enforcement issues. Over in Miami, Jared Kessler leads on class action litigation for food and beverage clients.