Engineering and Technical Expert Witnesses in Civil Litigation

 

Technical disputes in civil litigation, including product liability cases, construction defect claims, patent infringement actions, and industrial accident cases, frequently require the testimony of expert witnesses with specialised scientific, engineering, or technical knowledge. Understanding how expert witnesses function in litigation, and how to select and work effectively with technical experts, is important for attorneys and litigants in technical cases.

 

At stephens-adamson.com you will find a legal resource covering expert witness practice in technical litigation, engineering and construction disputes, product liability, patent litigation, and the full range of legal issues that arise when technical expertise is required in civil and commercial litigation.

 

The Role of Expert Witnesses in Litigation

An expert witness is a person who, by virtue of their education, training, experience, or specialised knowledge, is permitted to offer opinion testimony on matters beyond the common understanding of lay jurors or factfinders. Unlike lay witnesses (who can only testify about facts they personally observed), expert witnesses are permitted to offer opinions and conclusions that apply their specialised knowledge to the facts of the case.

 

Expert witness is a witness who by virtue of education, training, skill, or experience, is believed to have expertise and specialised knowledge in a particular subject beyond that of the average person. Federal Rule of Evidence 702 (and equivalent state rules) govern the admissibility of expert testimony. Under the Daubert standard (applicable in federal courts and many state courts), the trial court serves as a “gatekeeper” to ensure that expert testimony is based on sufficient facts or data, is the product of reliable principles and methods, and has been applied reliably to the facts of the case.

 

Engineering Expert Witnesses in Construction Disputes

Construction litigation frequently requires engineering expert witnesses to address questions about the design of structures, the adequacy of construction methods, the causes of structural failures, and the cost of repair or reconstruction. A structural engineer can provide expert testimony about whether a building’s design met applicable standards and whether deficient construction practices caused observed damage.

 

Product Liability and Forensic Engineering

In product liability cases, forensic engineers examine failed products to determine the cause of failure and whether the failure resulted from a design defect, a manufacturing defect, or a failure to provide adequate warnings. Forensic engineering investigations typically involve physical examination of the product, testing, and review of design and manufacturing documentation.

 

Patent Litigation Expert Witnesses

Patent infringement litigation requires technical experts who can explain to the court the nature of the patented technology, whether the accused product or process infringes the patent’s claims, and (in validity challenges) whether the patent claims are valid in light of the prior art. Patent litigation technical experts typically have advanced degrees and significant experience in the relevant technical field.

 

Selecting and Working with Technical Experts

The selection of a technical expert for litigation requires consideration of the expert’s technical qualifications in the specific area of dispute, their experience as an expert witness (including their track record in having their opinions admitted and accepted), their ability to communicate complex technical concepts clearly to a lay audience, and the absence of conflicts of interest.

 

Working effectively with a technical expert requires early engagement (giving the expert sufficient time to conduct a thorough investigation), clear communication about the legal issues and the questions that expert opinion is needed to address, and preparation for both direct examination and cross-examination.