Advertising & Marketing Expert Witness

Overview

About Advertising & Marketing Expert Witnesses

An advertising and marketing expert decides what an ad actually told consumers, whether that message mattered to the purchase, and whether the advertiser had support for it before it ran. Those three questions carry most false advertising disputes. This page covers advertising claims and marketing practice. Likelihood of confusion over a mark or trade dress belongs to a trademark expert, and pricing the resulting loss usually belongs to a damages expert.

Two Enforcement Routes

The private route is the Lanham Act. Section 1125(a)(1)(B) reaches anyone who, in commercial advertising or promotion, misrepresents the nature, characteristics, qualities or geographic origin of goods, services or commercial activities ¹. Standing is narrower than the text suggests. In Lexmark v. Static Control (2014), the Supreme Court held that a plaintiff must allege an injury to a commercial interest in reputation or sales, and must ordinarily show the injury flows directly from the deception wrought by the advertising ². A misled consumer cannot use the statute ². A plaintiff seeking an injunction is entitled to a rebuttable presumption of irreparable harm once a violation or likely success is found ³, which leaves the defendant to rebut it.

The public route is the FTC. Section 5 of the FTC Act declares unfair or deceptive acts or practices unlawful. The Commission's 1983 policy statement finds deception where a representation, omission or practice is likely to mislead a consumer acting reasonably in the circumstances, to the consumer's detriment ⁴. State consumer protection law adds its own tests, so the expert must work from the statute pleaded.

What the Ad Communicated: Survey Evidence

An ad can mislead by implication, and that is where survey work usually enters. The FTC says that in some situations it reads the meaning from the ad itself, and in others it will require extrinsic evidence that reasonable consumers reach the implied claim ⁴. Courts use surveys to probe how consumers would have interpreted an allegedly misleading advertisement, and to assess the value of the deceptive claim to consumers ⁸.

A litigation survey is attacked on design. The Reference Manual on Scientific Evidence frames the main points:

• Universe. It must be defined carefully. The manual gives the example of a survey about software sold to police departments where the right population was potential buyers in law enforcement ⁸
• Cause. The question is not merely whether consumers hold inaccurate beliefs, but whether exposure to the ad misleads them. That is why a control group matters: it nets out background noise and guessing ⁸
• Attorney distance. Counsel should not take part in survey implementation or interact with participants, and double-blind research is standard practice in litigation surveys whenever possible ⁸

The report also needs the instrument, the sampling design, and the rates and patterns of missing data ⁸.

Support, Endorsements and Reviews

The FTC's substantiation policy requires advertisers and ad agencies to have a reasonable basis for claims before they are disseminated ⁵. If the ad does not state a level of support, the Commission weighs the type of claim, the product, the consequences of a false claim, the benefits of a truthful claim, the cost of developing support, and the amount of substantiation experts in the field believe is reasonable ⁵. The expert reads the claim file, the test reports, the agency's clearance record and the dates, because support gathered after the ad ran does not answer the question.

Endorsements and reviews now have specific text. Under 16 CFR Part 255, an advertiser is subject to liability for misleading or unsubstantiated statements made through endorsements, and for failing to disclose unexpected material connections with endorsers ⁶. An endorser's experience is treated as a claim about what consumers will generally achieve, unless the ad discloses generally expected performance ⁶. Under the consumer reviews rule at 16 CFR Part 465, it is a violation for a business to write, create or sell a review or testimonial that materially misrepresents that the reviewer exists, used the product, or had the stated experience ⁷.

Who Is Qualified

There is no license or board for advertising practice. Two backgrounds recur. One is the academic marketing or consumer behavior researcher, often with a doctorate, who designs and defends surveys. The manual says any expert giving opinions on a survey should have general skills and experience with surveys and show familiarity with that survey's purpose, methodology and results ⁸. The other is the senior practitioner who has run brand campaigns, claim review or agency compliance and can speak to what the industry actually does.

Keep the roles apart. The survey expert measures what consumers took away. The practitioner addresses marketing practice and what the claim file should hold. A damages expert prices the lost sales or corrective advertising. Scientific proof of the claim itself, such as a product test, goes to a specialist in that science.

Qualifications

Qualifications to Look For

• ✓Doctorate or equivalent research record in marketing, consumer behavior or a related field for survey and perception opinions
• ✓Hands-on experience designing, fielding and defending consumer surveys
• ✓Senior agency or brand experience running campaigns, claim review or marketing compliance for practice opinions
• ✓Working knowledge of 16 CFR Parts 255 and 465 and the FTC's deception and substantiation statements
• ✓Published research or sustained professional work in the product category or channel at issue
• ✓No license or board certification exists in this field, so the record of work is the credential
• ✓Prior deposition or trial testimony, with reports that disclose the instrument and all data

FAQ

Frequently Asked Questions