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Expert Witness Blog

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Environmental Toxicology Expert Witness Testimony Not Allowed in Deepwater Horizon Litigation

Summary:  Environmental Toxicology Expert Witness testimony not allowed even though the expert stated that in order to prove exposure, he would have to base his opinion on the scientific methods of an environmental toxicology. Facts:  This case (Pettaway v. BP Exploration & Production, Inc. et al – United States District…

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Addiction Medicine Expert Witness Allowed in Prescription Conspiracy Litigation

Summary: Addiction Medicine Expert Witness testimony is allowed because the court ruled that the expert’s testimony will not include a legal opinion Facts:  This case (United States v. Taylor – United States District Court – Eastern District of Kentucky – December 2., 2022) involves a claim by the United States…

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Environmental Engineering Expert Witness Testimony Allowed in Hazardous Contaminant Spill Litigation

Summary:  Environmental Engineering Expert Witness allowed to testify even though the defendant argued that he did not follow NCP standards when obtaining field samples of a hazard contaminant. Facts:  This case (Courtland Co. v. Union Carbide Corp. – United States District Court – Southern District of West Virginia – April…

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Business Valuation Expert Witness Testimony Allowed in Part in Securities Lawsuit

Summary: Business Valuation Expert Witness testimony allowed in part because the plaintiff’s charge that Dr. Finnerty relied on unknown information should be discussed on cross-examination. Facts:  This case (Overwell Harvest, Limited v. Widerhorn et al – United States District Court – Northern District of Illinois – December 2, 2022) involves…

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Accident Reconstruction & Safety Expert Witness Testimony Not Allowed in Slip & Fall Litigation

Summary: Accident Reconstruction & Safety Expert Witness not allowed to testify even though the plaintiff argued that Kroger’s argument that Balian’s opinion was general knowledge should be brought up at cross-examination. Facts:  This case (Sutton v. Kroger Co. – United States District Court – Eastern District of Tennessee – July…

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Civil Engineering Expert Witness Testimony Allowed in Part in Water Slide Injury Litigation

Summary: Civil Engineering Expert Witness testimony allowed in part even though the plaintiff argued that the expert’s testimony involving visibility and ride duration will not assist the trier of fact because it rehashed other testimony. Facts:  This case (Saulsbery v. Mark Twain Water Zone, LLC et al – United States…

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Statistics Expert Witness Testimony Allowed in Phlebotomy Promotion Litigation

Summary: Statistics Expert Witness testimony not allowed even though the defendant argued that they have not been able to replicate the expert’s analysis. Facts:  This case (Stewart v. Quest Diagnostics Clinical Laboratories, Inc. et al – United States District Court – Southern District of California – October 5, 2022) involves…

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Business Valuation Expert Witness Testimony Allowed in Hotel Dissolution Litigation

Summary: Business Valuation Expert Witness testimony is allowed despite the defendant’s argument that her report is unreliable because she applied the incorrect valuation date and the wrong evaluation standard. Facts:  This case (Agnelli v. Lennox Mia. Corp – United States District Court – Southern District of Florida – May 5th,…

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Supply Chain Expert Witness Testimony Not Allowed in Trade Secrets Case

Summary: Supply Chain Expert Witness not allowed to testify even though the plaintiff’s argued that he has decades of experience in the general field of transportation logistics. Facts:  In this case (Keystone Transportation Solutions, LLC v. Northwest Hardwoods, Inc et al – United States District Court – Western District of…

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Aviation Expert Witness Testimony Not Allowed in Aerospace Contract Litigation

Summary:  Aviation Expert Witness testimony not allowed even though the defense expert admitted that there were flaws in the defendant’s supplier performance management data. Facts:  This case (Spearman Corporation Marysville Division et al v. The Boeing Company – United States District Court – Western District of Washington – October 11,…

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