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Medical Devices

KR

Karl R. Leinsing

MSME, PE

Dover, NH35 years+ yrs★ 8.8

Karl R. Leinsing, MSME, PE is a medical device engineering expert specializing in full life cycle medical device product development and consulting. With a career encompassing mechanical engineering, regulatory compliance, and innovative design, he brings a comprehensive framework to litigation work involving complex product development and patent disputes. His work centers on investigating patent infringement, assessing product liability, and evaluating whether industry standards were met in medical device development. Mr. Leinsing has been retained in numerous expert witness and consulting engagements across the United States, Canada, EPO, USPTO, ITC, and Australia, involving patent and liability cases in the medical device industry. His M.S. in Mechanical Engineering from North Carolina A&T State University, along with his Professional Engineer license in NH, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving medical device design and functionality.

Mechanical EngineeringMedical device product development

General Surgery

JD

JEFFREY DURHAM DURGIN, MD, FACS

Board Certified in General Surgery, Board Certified in Emergency Medicine

Midland, TX22 years+ yrs★ 8.8

JEFFREY DURHAM DURGIN, MD, FACS is a General Surgery and Emergency Medicine expert specializing in trauma surgery and emergency medical care. With a diverse career encompassing military service, academic roles, and clinical leadership, he brings a multifaceted perspective to litigation work. His work centers on investigating surgical outcomes, assessing emergency medical interventions, and evaluating whether standard of care deviations occurred. Dr. Durgin has been retained in numerous expert witness and consulting engagements across Texas and New Mexico, involving cases in trauma surgery, emergency medicine, and bariatric procedures. His MD in Doctor of Medicine from the University of Texas Medical School, along with certifications such as Board Certified in General Surgery and Emergency Medicine, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of standard of care in disputes involving surgical and emergency medical practices.

Emergency MedicineTrauma SurgeryVascular Surgery+3

Slip Trip & Fall

WH

William H. ElDorado

P.E., CXLT

Lewisville, Texas40 years+ yrs★ 8.8

William H. ElDorado, P.E., CXLT is a premises liability and property damage expert specializing in post-incident evaluations of slips, trips, and falls. With a career spanning engineering design, forensic analysis, and expert witness consulting, he brings a multidisciplinary framework to his litigation work. His work centers on investigating slip resistance, assessing structural integrity, and evaluating whether accessibility standards were met. Mr. ElDorado has been retained in numerous expert witness and consulting engagements across Texas, Arkansas, Kansas, Oklahoma, Louisiana, Missouri, and New Mexico, involving premises liability and property damage cases. His Bachelor of Science Degree in Civil Engineering, along with certifications as a Certified Operator of English XL Tribometer and Licensed Professional Engineer, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving slip, trip, and fall incidents.

Premises LiabilityProperty Damage

Engineering

JA

John A. Williams

PhD, PE, ASA, MBA, CFEI

South Bend, IN40+ years+ yrs★ 8.8

John A. Williams, PhD, PE, ASA, MBA, CFEI is an international engineering and energy technology expert specializing in engineering analysis and financial appraisals of renewable and conventional energy systems. With a career spanning intellectual property, economic damages, and regulatory analysis, he brings a multifaceted perspective to litigation work. His work centers on investigating industrial accidents, assessing energy market dynamics, and evaluating whether engineering standards have been met. Mr. Williams has been retained in numerous expert witness and consulting engagements across the United States, involving renewable energy, conventional energy, and manufacturing technologies. His Ph.D. in Chemical and Fuels Engineering, along with certifications such as Certified Fire and Explosion Investigator, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving energy technologies and industrial processes.

Forensic & IP ValuationEngineering AnalysisFinancial Appraisals+5

LSRP

RA

Rodger A. Ferguson Jr.

Licensed Site Remediation Professional

Newark, NJ20 years+ yrs★ 8.8

Rodger A. Ferguson Jr., Licensed Site Remediation Professional is a site remediation expert specializing in environmental compliance and hazardous substances management. With a career encompassing environmental assessments, regulatory compliance, and remediation strategy development, he brings a comprehensive framework to litigation work involving complex environmental issues. His work centers on investigating contamination sources, assessing remediation strategies, and evaluating whether regulatory compliance standards have been met. Mr. Ferguson has been retained in numerous expert witness and consulting engagements across New Jersey, involving cases related to site remediation, hazardous waste management, and environmental compliance. His Master of Science in Environmental Science from Rutgers University, along with his Licensed Site Remediation Professional certification from the New Jersey Department of Environmental Protection, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of responsibility in disputes involving site contamination and remediation efforts.

AssessmentRemediationCERCLA+18

Structural Engineering

MG

Marcor G. Platt

SE, PE, CBO, PMP, PMI-ACP

South Jordan, UT15 years+ yrs★ 8.8

Marcor G. Platt, SE, PE, CBO, PMP, PMI-ACP is a structural and forensic engineering expert specializing in structural design, forensic analysis, and project management. With a career encompassing diverse engineering disciplines, he brings a multifaceted perspective to litigation work involving complex structural and civil engineering issues. His work centers on investigating structural failures, assessing compliance with building codes, and evaluating project management practices. Mr. Platt has been retained in numerous expert witness and consulting engagements across the Southwestern United States, Pacific Northwest, and US Virgin Islands, involving residential, commercial, and industrial building cases. His MS in Civil Engineering, structural emphasis, along with certifications such as Certified Building Official (CBO) and Project Management Professional (PMP), reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving structural integrity, construction defects, and environmental compliance.

Civil EngineeringStructural DesignForensic Engineering+3

Pharmaceutical Regulation

DM

Debra M. Leibold, MD, PhD

Global Labeling Strategist: Clinical, Regulatory, Risk, Safety

Blue Bell, PA33 years+ yrs★ 8.8

Debra M. Leibold, MD, PhD is a pharmaceutical regulation expert specializing in labeling strategy and compliance within the global pharmaceutical industry. With a career spanning clinical risk management, safety surveillance, and regulatory labeling, she brings a strategic framework to litigation work involving complex pharmaceutical labeling disputes. Her work centers on investigating labeling inconsistencies, assessing regulatory compliance, and evaluating whether safety standards have been met. Dr. Leibold has been retained in numerous expert witness and consulting engagements across the US, EU, and Japan, involving cases related to pharmaceutical labeling, regulatory compliance, and safety surveillance. Her MD and PhD in Medicine and Molecular Biology, along with her Medical Physician & Surgeon license in Pennsylvania, reinforce her ability to deliver objective, defensible analyses. She is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of regulatory compliance in disputes involving pharmaceutical labeling and safety standards.

Warnings & LabelsClinical Risk ManagementSafety Surveillance+1

Industrial Hygiene

MP

Michael P Menz

President and Partner

Runnemede, NJ33 years+ yrs★ 8.8

Michael P Menz, CIH, CHMM is an industrial hygiene expert specializing in environmental consulting and indoor air quality assessments. With a career spanning industrial hygiene, environmental consulting, and hazardous materials management, he brings a comprehensive framework to litigation work involving environmental health and safety. His work centers on investigating asbestos and mold contamination, assessing silica exposure risks, and evaluating whether industry standards for indoor air quality have been met. Mr. Menz has been retained in numerous expert witness and consulting engagements across the United States, involving cases related to asbestos, mold, lead-based paint, and other hazardous materials. His Bachelor of Science in General Studies from Villanova University, along with certifications such as Certified Industrial Hygienist and Certified Hazardous Materials Manager, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving industrial hygiene and environmental safety.

Indoor Air QualityEnvironmental Consulting

Human Factors

KS

Karol Silva

Senior Consultant

Blue Bell, PA14 years+ yrs★ 8.8

Karol Silva, Ph.D., M.P.H. is a human factors expert specializing in child and adolescent safety litigation. With interdisciplinary training in developmental psychology and public health, she brings a comprehensive understanding of how cognitive and motor development, risk perception, and caregiver supervision impact safety outcomes. Her work centers on investigating risk behaviors, assessing product safety features, and evaluating whether caregiver practices align with safety standards. Dr. Silva has been retained in numerous expert witness and consulting engagements across the United States, involving cases related to consumer product safety, playground equipment, and child supervision. Her Ph.D. in Developmental Psychology from Temple University, along with certifications as a Certified Playground Safety Inspector and Child Passenger Safety Technician, reinforce her ability to deliver objective, defensible analyses. She is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving child safety and product design.

SafetyChild and adolescent safetyProduct design+1

Construction Defects

MS

Mark S. Densmore

Board-Certified Forensic Engineer

Lakewood Ranch, FL30 years+ yrs★ 8.8

Mark S. Densmore, P.E., S.I., DFE, FRSE, MLE is a forensic structural engineering expert specializing in forensic property damage investigations and evaluations. With a career spanning structural design, forensic investigations, and expert witness testimony, he brings a comprehensive forensic framework to litigation work. His work centers on investigating construction defects, assessing structural damage, and evaluating whether building code violations have occurred. Mr. Densmore has been retained in numerous expert witness and consulting engagements across Florida, involving cases related to construction defects, hurricane damage, and roofing system failures. His Bachelor of Science in Civil Engineering from Worcester Polytechnic Institute, along with certifications such as Board-Certified Diplomate in Forensic Engineering and Florida-Recognized Structural Engineer, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving structural failures and property damage.

Structural EngineeringForensic property damage investigationsStructural design and analysis

Employment and Management

MC

Maureen Clark

Human Resource Management, Expert Witness Consultation

Menlo Park, CA56 years+ yrs★ 8.8

Maureen Clark, SHRM-SCP, SPHR-CA is a Human Resource Management expert specializing in employment and management litigation. With a career spanning infrastructure development, problem-solving, and neutral fact-finding, she brings a comprehensive framework to her litigation work. Her work centers on investigating workplace practices, assessing compliance with HR standards, and evaluating whether employment policies have been properly implemented. Ms. Clark has been retained in numerous expert witness and consulting engagements across the United States, involving high tech, manufacturing, services, not-for-profit, education, and public sectors. Her M. Ed. in Counseling from San Jose State University, along with certifications such as SHRM-SCP and SPHR-CA, reinforce her ability to deliver objective, defensible analyses. She is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of responsibility in disputes involving employment practices, wrongful termination, and workplace discrimination.

InfrastructureProblem solvingNeutral fact-finding+1

Pharmacology

JM

James M Sonner, MD

Physician-Scientist and Professor Emeritus

Rancho Santa Margarita, CA35 years+ yrs★ 8.8

James M Sonner, MD is a pharmacology and anesthesiology expert specializing in drug interactions, perioperative medication safety, and the identification of adverse drug reactions or toxic effects. With a career spanning chemistry, pharmacology, and clinical medicine, he brings a scientifically rigorous framework to litigation work involving complex pharmacological outcomes. His work centers on investigating drug interactions, assessing perioperative medication safety, and evaluating whether adverse drug reactions have occurred. Dr. Sonner has been retained in numerous expert witness and consulting engagements across the United States, involving cases related to pharmacology of the nervous system and anesthesiology. His Doctor of Medicine from Harvard Medical School, along with certifications from the American Board of Anesthesiology and the Drug Enforcement Administration, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving drug interactions and toxicology.

ToxicologyChemistryClinical Medicine+4

Expert Witness

AA

Andrew Allocco, P.E.

Forensic Consulting Engineer

Port St. Lucie, FL50+ years+ yrs★ 8.8

Andrew Allocco, P.E. is a forensic consulting engineer expert specializing in construction litigation and insurance claims. With a career spanning forensic engineering, construction consulting, and insurance litigation, he brings a multifaceted perspective to his litigation work. His work centers on investigating construction defects, assessing insurance claims, and evaluating whether industry standards were met. Mr. Allocco has been retained in numerous expert witness and consulting engagements throughout Florida, involving construction defects, insurance disputes, and personal injury cases. His Bachelor of Science in Nuclear and Marine Engineering, along with certifications such as Florida Licensed Mold Assessor & Mold Remediator and FAA Part 107 Licensed Drone Pilot, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving construction and insurance claims.

Forensic Consulting EngineerConstruction LitigationBuilding Envelope+22

Structural Engineering

BH

Brian Huang

President, Structural Forensic Engineer

Houston, TXOver 25 years+ yrs★ 8.8

Brian Huang, PE, SE, LEED AP is a structural forensic engineering expert specializing in building collapse cause and origin. With a career spanning structural design, forensic analysis, and building envelope evaluation, he brings a multifaceted perspective to litigation work. His work centers on investigating structural failures, assessing construction defects, and evaluating whether building code violations contributed to damages. Mr. Huang has been retained in numerous expert witness and consulting engagements across the United States, involving cases such as structural engineering failures, construction defects, and premises liability. His MS in Structural Engineering from Tsinghua University, China, along with certifications including LEED™ 2.0 Accredited Professional, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving structural integrity and compliance with industry standards.

Construction DefectsForensic Structural EngineeringBuilding Collapse Cause & Origin+11

Aviation & Aerospace

KM

Keith M. Cianfrani

Aviation Accident Investigator

The Villages, Florida45 years+ yrs★ 8.8

Keith M. Cianfrani, Ed.D, (abd), MAS, CISM is an aviation accident investigation expert specializing in accident investigations and FAA enforcement proceedings. With a career spanning military aviation safety, commercial piloting, and safety consulting, he brings a multifaceted perspective to litigation work. His work centers on investigating aviation accidents, assessing risk management practices, and evaluating whether safety management systems were properly implemented. Mr. Cianfrani has been retained in numerous expert witness and consulting engagements across the United States, involving aviation accident investigations and safety audits for Part 135 and Part 91 operators, among others. His MAS in Aviation Safety from Embry Riddle Aeronautical University, along with his Certified Flight Instructor (CFI) certification, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving aviation safety and human factors.

Accident ReconstructionAviation Accident InvestigationRisk Management+4

Electronics

RO

Robert O. Peruzzi

PhD, PE, DFE

Bethlehem, PA35 years+ yrs★ 8.8

Robert O. Peruzzi, PhD, PE, DFE is a forensic electrical engineering expert specializing in intellectual property, patents, and product liability litigation. With a career encompassing electronics engineering, integrated circuits, and control systems, he brings a nuanced understanding of technical complexities to his litigation work. His work centers on investigating electrical failures, assessing patent infringement, and evaluating whether product specifications meet industry standards. Mr. Peruzzi has been retained in numerous expert witness and consulting engagements across the United States, involving cases related to electronics, communication systems, and personal injury from electrical failures. His PhD in Electrical Engineering, along with his Professional Engineer license in PA and Board Certification in Forensic Engineering, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving electrical and electronic systems.

EngineeringForensic EngineeringElectrical Engineering+2

Traffic Engineering and Safety

CW

Charles W. Huffine

PE, PTOE, AICP

Lakewood Ranch, FL35 years+ yrs★ 8.8

Charles W. Huffine, PE, PTOE, AICP is a traffic engineering and safety expert specializing in crash assessment and transportation planning litigation. With a career encompassing municipal and consulting roles, he brings a comprehensive framework for evaluating traffic safety and engineering standards in legal contexts. His work centers on investigating crash causation, assessing compliance with traffic control standards, and evaluating whether roadway design meets safety regulations. Mr. Huffine has been retained in numerous expert witness and consulting engagements across the United States, involving cases related to highway safety, traffic engineering impacts, and construction zone safety. His Bachelor of Science in Civil and Environmental Engineering from Cornell University, along with his Certified Professional Traffic Operations Engineer (PTOE) designation, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving traffic engineering and roadway safety.

Construction Zone SafetyCrash Assessment and AnalysisDriver Behavior/Human Factors+11

Energy and Construction Engineering

JW

Joshua Weiner

President & CEO

Menlo Park, CA18 years+ yrs★ 8.8

Joshua Weiner, NABCEP is an energy and construction engineering expert specializing in solar PV, energy storage, and microgrid design. With a career spanning solar project development, energy technologies, and policy frameworks, he brings a comprehensive understanding of the technical and regulatory aspects critical to litigation work. His work centers on investigating compliance with industry standards, assessing the viability of energy solutions, and evaluating whether project implementations meet contractual obligations. Mr. Weiner has been retained in numerous expert witness and consulting engagements across the United States, involving utility-scale, commercial, industrial, and residential solar and energy storage projects. His BA in Astrophysics/Astronomy, along with NABCEP certification, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of responsibility in disputes involving energy technologies and project execution.

Solar PVEnergy StorageMicrogrid Design

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