Category: Expert Challenges
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Public Health Expert Was Allowed to Opine on the Quality of Care
This is a securities class action, led by Chicago Laborers’ Pension Fund and New York Hotel Trades Council & Hotel Association of New York City, Inc. Pension Fund (collectively, “Plaintiffs”). Plaintiffs alleged that Acadia Healthcare Company, Inc. (“Acadia”) and several of its current and former executives, including David M. Duckworth, Brent Turner, and Joey A.…
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Avionics Expert Allowed to Opine on Engine Failure
This case arises from an accident involving a Robinson R44 II helicopter, registration N442VB (“Helicopter”), that occurred on the evening of December 30, 2021, in Levy County, Florida. The Helicopter was being flown at night by the owner-pilot, Ronald Hicks (“Pilot Hicks”), from a local friend’s residence to his private property. At the time of…
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Economics Expert Was Allowed to Opine on Recidivism
Plaintiff John Doe brought facial and as-applied constitutional challenges to the reporting requirements contained in Arizona’s sex offender registry statutes. Under Arizona’s statutory scheme, Doe is required to register as asex offender for life. Intervenor-Defendants Warren Petersen and Ben Toma retained Dr. John Lott as an expert witness. Plaintiff filed a motion to exclude the…
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Class Action Expert Was Allowed to Opine on the Notice Procedure
The Telephone Consumer Protection Act (TCPA) prohibited robocalls to cellphones except in emergencies or with the recipient’s consent. Jason Saggio and Jude Furr, on behalf of a proposed nationwide class, alleged that Defendant Medicredit, a medical debt collector, erroneously and unlawfully placed robocalls to their cellphones to collect debts they didn’t owe. Plaintiffs proposed a…
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Infectious Disease Expert Was Allowed to Opine on Masking and Testing
Eight former Redmond firefighters sued the City of Redmond (“City”) after being terminated for refusing COVID-19 vaccinations on religious grounds. They argued the City should have let them continue working with masking and testing rather than requiring vaccination. Plaintiffs filed a Daubert motion to exclude the testimony of the City’s expert, Dr. John Lynch. Infectious…
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Political Science Expert Was Allowed to Opine on Paraguay’s Legal System
On September 12, 2025, Maik Evert Ens Loblein (“Petitioner”) filed the Petition for the Return of Children to Paraguay pursuant to the Hague Convention. The Petition asserted that Roxana Andrea Alcaraz de Ens (“Respondent”) unlawfully retained in the United States two children who habitually reside in Paraguay. On September 15, 2025, Petitioner filed an Amended…
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Preventive Medicine Expert Was Allowed to Opine on the Clinical and Operational Duties
On January 28, 2021, Demetrius Nichols died while incarcerated at Menard Correctional Center. Plaintiff Diane Jones, Administrator of the Estate of Demetrius Nichols, filed this action against Wexford Health Sources, Inc., Dr. Mohammed Siddique, Ali Dearmond, NP, and Dr. Stephen Ritz, asserting wrongful death. Plaintiff retained Ryan D. Herrington, M.D., MPH to support her claims.…
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Infectious Disease Expert Was Allowed to Opine on the Lack of Severe Lung Damage
Roy Edward Ates, Jr., is a federal prisoner. He alleged that prison officials’ negligence caused him to become infected with COVID and that prison personnel were negligent in providing him medical treatment thereafter. Defendant retained Dr. Alysse Wurcel as an expert witness. She has assisted Massachusetts sheriffs in their response to COVID beginning in March…
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Engineering Expert Was Allowed to Opine on the Ruptured Pipe
Plaintiffs, BME Fire Trucks LLC (“BME”) and 223 Roedel Avenue LLC’s (“Roedel”), brought this action against their insurer, Defendant The Cincinnati Casualty Company (“Cincinnati”), seeking damages caused by a ruptured natural gas pipeline. On October 31, 2022, BME submitted a claim to Cincinnati, and Cincinnati retained Brian Hansen of Northwest Investigative Engineering to inspect the…
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Economics Expert Was Allowed to Opine on Assisted Living Facility Administration Issues
Plaintiffs are the estates of three decedents, Robert W. Petersen (“Mr. Petersen”), Mary Ann Simons, (“Ms. Simons”) and Charlotte Elaine Guilford (“Ms. Guilford”) (collectively, “Plaintiffs”). Plaintiffs were residents of Canyon Creek, an assisted living facility in Billings, Montana specializing in memory care, during the height of the COVID-19 pandemic in 2020. Plaintiffs alleged that Canyon…
