Nicotine & Cannabis Vaping Expert Witness Services

A vaping technology expert witness is a technical specialist who provides independent analysis and testimony in legal cases involving vape devices, e-cigarettes, or related products. If your case involves issues like how an e-cigarette works, whether a vaporizer is defective, or whether a vape product infringes a patent, an expert like Arnaud Dumas de Rauly is critical. He will explain the complex engineering or scientific evidence in simple terms for the court. Essentially, whenever you face litigation that hinges on the design, safety, or function of a vaping product, a vaping expert witness can strengthen your position by providing credible, fact-based insights.

Arnaud supports a broad range of cases in this domain. This includes patent infringement lawsuits (e.g. one vape company suing another over technology – even in ITC §337 trade cases), product liability suits (such as an injury from an exploding e-cigarette or claims of toxic emissions), and commercial litigation involving vape technology (contract disputes, trade secrets, etc.). He’s also well-versed in cannabis vape industry matters, such as hardware failures or compliance issues specific to cannabis oil vaporizers. In short, if it’s litigation about an electronic nicotine delivery system (ENDS) or cannabis vaping device, Arnaud has the expertise to assist.

Arnaud offers a rare combination of qualifications that few vape expert witnesses can match. He is an engineer and inventor who has worked directly in the vaping industry, giving him practical know-how about how these products are built and used. At the same time, he is a global standards leader (chairing ISO and CEN committees) which means his methodologies align with internationally accepted best practices. Arnaud is also an excellent communicator – as clients attest, he can break down complex science into layman’s terms. Finally, he approaches every case with professionalism and neutrality, prioritizing facts over advocacy. This blend of deep technical insight and clear, unbiased communication is exactly what attorneys and fact-finders look for in an expert witness.

Yes. Arnaud has provided deposition testimony multiple times and has given evidence in formal hearings (including an International Trade Commission §337 proceeding). He is familiar with courtroom procedures and has been cross-examined on his opinions. While some cases he’s involved in have settled before trial, he prepares extensively for any potential trial testimony. His focus is on delivering consistent, fact-based answers under oath. In every instance to date, his testimony has been well-received for its clarity and objectivity. (Notably, his contributions in one ITC case helped clarify technical issues to the extent that the patent in question was found invalid.) Arnaud’s courtroom and deposition experience mean you can trust him to be a composed, effective witness if your case proceeds to testimony.

Absolutely. Arnaud Dumas de Rauly serves as a neutral, independent expert witness. He has no industry agenda or bias – whether engaged by a plaintiff or a defendant, his role is to provide truthful, technically sound analysis. In fact, Arnaud has been retained in different capacities (including as a defense expert in an ITC case and as a consulting expert via an agency) and in each scenario, his approach remains the same: objective and evidence-based. He is also transparent about any potential conflicts and will decline an engagement if there is a personal or financial conflict (to date, none have been found). Both sides of the aisle can rely on his integrity and commitment to the facts. The bottom line: Arnaud’s opinions are independent – they won’t change based on who hires him, which is exactly what courts expect from an expert witness.