The Lanham Act

Also known as the Trademark Act of 1946. The federal statute governing trademark law, including registration (with the US Patent and Trademark Office), maintenance, and protection of trademarks used in or affecting interstate commerce. The Lanham Act provides a federal cause of action for infringement of trademarks registered with the US Patent and Trademark Office. The Lanham Act also provides federal causes of action for trademark dilution, cybersquatting, and several unfair competition claims, such as unregistered trademark infringement (including claims for infringement of unregistered trade dress and trade names), false advertising, false endorsement, and false designation of origin. The Lanham Act generally does not preempt state common law trademark and unfair competition principles or state trademark statutes.

Rhonda Harper - Expert Witness

Rhonda Harper is routinely retained to formulate expert surveys, conduct rebuttal critiques, or construct rebuttal surveys to show the potential difference in results with properly designed and executed surveys. She has extensive experience and a deep understanding of survey design, sampling, question construction, data analysis, and methodological pitfalls that introduce bias or systematic error.

Located in Dallas, TX, Rhonda Harper has been retained by 95+ law firms since 2005. With a focus on Trademark and Trade Dress Infringement, Misleading and Deceptive Advertising, Licensing, and Commercial Reasonableness cases, Rhonda Harper has conducted hundreds of research studies, including 50+ Likelihood of Confusion and Secondary Meaning surveys. She has been deposed ~50 times and served in ~20+ trials and arbitrations.

Contact: Rhonda Harper at 214-244-4608 or