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Class Action Expert Witnesses

Class action expert witnesses and consultants listed here may be able to form expert opinions, draft expert witness reports, provide expert witness testimony at deposition and/or trial as or serve as consulting (non-testifying) experts on class action. The class action expert witness listings on this page are typically from fields/areas of expertise such as: Advertising, Business Damages, Economics, Employment, Financial, Insurance, Intellectual Property, Manufacturing, Marketing, Products Liability, Statistics, and Technology.

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Eric Forister, PhD

Econ One Research, Inc.

Los Angeles, California

Economics, Business Damages - Damages, Lost Profit, Reasonable Royalty, False Advertising, Consumer Fraud, Class Certification, Class Action, Market Power, Market Definition, Patent, Survey, Valuation

Dr. Eric Forister is an expert economist with testifying experience on market definition, market power, and damages. His expertise includes applying advanced statistical techniques to datasets, synthesizing information from documents, and designing and evaluating surveys. He focuses on relevant questions to tackle complex issues with an efficient and effective style of communication. Dr. Forister also has extensive experience consulting on issues including royalty rates, irreparable harm, sampling, survey design, common impact, and materiality. He is a Senior Economist at Econ One and can be reached for more information upon request. Learn more at www.econone.com/staff-member/eric-forister.

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Michael Trousdale, PhD

Economic Damages Expert Witness

Econ One Research

Los Angeles, California

Economics, Business Damages - Damages, Personal Injury, Wrongful Death, Medical Malpractice, Discrimination, Employment, Antitrust, Market Power, Market Definition, Class Action, Class Certification, Economic Analysis, Econometric Analysis, Economic Consulting

Dr. Michael Trousdale is a managing director at Econ One Research with over 15 years of experience conducting and managing complex economic research. As an economic expert, Dr. Trousdale applies economic and statistical analysis to liability and damages estimation for litigation matters. He has consulted on behalf of both plaintiffs and defendants across a wide array of industries and products, including professional sports, commercial real estate, steel products manufacturing, air & surface transportation, oil & gas, electricity, pharmaceuticals, radio equipment, and a variety of others.

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Nicole Liska, M.A. (Economics)

Economic damages expert witness

Fulcrum Financial Inquiry LLP

Los Angeles , California

Economics, Financial - economic damages, personal injury, wrongful death, wrongful termination, discrimination, medical malpractice, product liability, lost earnings, loss of income, life care plan present value, present value medical care costs, pension Loss, wage and hour, unpaid overtime, meal breaks, false advertising, breach of contract, class action

Ms. Liska specializes in applied economic and statistical modeling, with over 25 years of experience on a diversity of cases across industries. She has extensive experience addressing economic damages, most often in the areas of (i) personal injury/wrongful death, (ii) employment-related cases (e.g., wrongful termination, discrimination) (iii) analyses to address class action claims (e.g., wage and hour, false advertising, statistical sampling), and (iv) commercial claims (e.g., breach of contract). She has provided economic and financial analyses on these matters by combining sophisticated economic and statistical techniques. Ms. Liska has testified as an expert witness in federal and state courts, arbitration, and deposition. She also regularly collaborates with others at her firm, Fulcrum Financial Inquiry, in complex cases where expertise across different areas is required to address needs for forensic accounting, fraud investigation and business valuation. When appropri...

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Philip J. Cross, Ph.D.

Class action, antitrust & economic damages expert

Kenyon Consulting LLC

California

Economics, Statistics - Lost wages, Antitrust, Class certification, Lost profits, Breach of contract, Damages, Liability, Platform economics, Conjoint surveys, Health insurance, Class action, Economic damages, Discrimination, Wrongful termination, Wage and hour, Industrial espionage, Fraud detection, Employment discrimination, Statistical sampling, FLSA

Phil Cross is Kenyon Consulting’s principal and founder. He has over twenty years’ experience as an economist and statistician in academia, government and consulting. His consulting experience includes opining in large class-action litigations, high-profile arbitrations, antitrust matters, breach-of-contract matters, wage-and-hour matters and employment discrimination matters. He is widely recognized as being an effective testifier, able to break down complex economics ideas and empirical findings into plain English for judges and juries. Phil has his Ph.D. in Economics from the University of Wisconsin, has taught at Georgetown, Johns Hopkins and the University of Melbourne and has published in top academic journals. Phil has a wide range of experience, including opining on video game distribution, health insurance provision, health-care worker markets, higher education finance, automotive supply distribution, probationary service provision, health care, financial services, energ...

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Zal Phiroz, PhD, MBA

Product Liability | Supply Chain | Manufacturing

Harvard University, Michigan State University (Previously UCSD, USC)

Los Angeles, California

Products Liability, Manufacturing - Product Liability, Supply Chain, Manufacturing Defect, Product Defect, Product Recall, Mass Tort, Class Action, Quality Assurance, Labelling, Product Safety, Causation, Standard of Care, Supply Chain Disruption, Third-Party Logistics, Distribution, FDA Compliance, California Proposition 65, Inventory Loss, Warehousing, CPSC Compliance

Dr. Phiroz is a nationally recognized expert witness specializing in product liability, manufacturing defects, and supply chain failures. He provides expert testimony in cases ranging from individual product defect claims to mass tort and class action litigation, representing both plaintiffs and defendants in matters involving product recalls, quality assurance failures, supply chain disruption, causation analysis, and regulatory compliance. At Procter & Gamble (NYSE:PG), Dr. Phiroz held senior leadership roles driving transformative supply chain initiatives overseeing demand forecasting, supply chain infrastructure, and recall analysis. He currently holds faculty positions at Harvard University and Michigan State University, teaching undergrad/grad courses in supply chain and operations management. In 2023, he was appointed as a Fellow at Harvard University (Inclusive Practice Fellowship). As a retained testifying expert, Dr. Phiroz has provided expert testimony in federal and s...

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Philip J. Cross, Ph.D.

Class action, antitrust & economic damages expert

Kenyon Consulting LLC

Washington, District Of Columbia

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Zal Phiroz, PhD, MBA

Product Liability | Supply Chain | Manufacturing

Harvard University, Michigan State University (Previously UCSD, USC)

Florida

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Joseph L Sutherland, PhD

Data, analytics, and technology - Emory Faculty

J.L. Sutherland & Associates, Inc.

Atlanta, Georgia

Business Damages, Technology - Economics, Econometrics, Data, Data Analytics, Big Data, Machine Learning (ML), Artificial Intelligence (AI), Software, Cloud Computing, Data Science, Survey Research, Digital Advertising, Finance, Banking, Healthcare, Antitrust, Class Action, Class Certification, Contractual Disputes, Cybersecurity

Dr. Joe Sutherland is the founding director of Emory's Center for AI Learning, a professor in Emory’s Department of Quantitative Theory & Methods, associate faculty at the Empathetic AI for Health Institute at Emory Healthcare, principal investigator of the Emory branch of the U.S. AI Safety Institute Consortium, and fellow of the Weidenbaum Center on the Economy, Public Policy, and Government at Washington University in St. Louis. His work has been featured on FOX 5 Good Day Atlanta, Atlanta Journal-Constitution, Forbes, Georgia Trend, Government Technology, MIT Sloan Management Review, and many other venues. His professional background includes leadership service at The White House, Cisco, Amazon, and as CEO of an AI startup. His research exploring the utilization of machine learning and AI in congressional lawmaking, state policy leadership, and development economics is published in top peer-reviewed journals. He holds patents for systems that manage and analyze petabyte-level da...

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Philip J. Cross, Ph.D.

Class action, antitrust & economic damages expert

Kenyon Consulting LLC

Illinois

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Brian Sowers, MBA

Testifying Consumer Survey Expert

Applied Marketing Science, Inc.

Burlington, Massachusetts

Marketing, Advertising - Survey research, Lanham Act, trademark infringement, trade dress infringement, likelihood of confusion, dilution, secondary meaning, genericness, false/deceptive advertising, class action, Intellectual property

Federal and state level qualified consumer survey expert with 30 years market research experience. Principal at Applied Marketing Science, Inc., a full-service market research and consulting firm. Mr. Sowers has served as a testifying expert and submitted reports to Federal and State Courts, as well the Trademark Trial and Appeal Board, in a variety of litigation matters on behalf of plaintiffs and defendants. He has personally designed and conducted thousands of market research surveys across a broad range of modalities and a broad range of populations. Mr. Sowers hosts an annual CLE accredited webinar on survey evidence in Intellectual Property and serves as an editor for The Trademark Reporter. His expert services include survey design, implementation and analysis, expert report preparation, critique of opposing expert reports, expert testimony, guidance on the deposition and trial questioning of opposing expert witnesses.

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Patricia Yanes

Consumer Survey Expert – Class Actions

Applied Marketing Science, Inc.

Burlington, Massachusetts

Marketing, Advertising - Conjoint Analysis, Class Action, Class Action Lawsuits, Class Action Damage Models, Class Action Litigation, Class Certification, Economic Damages, Market Research, Marketing, Survey Design, Survey Research, Damage Calculations, Damages

Patricia Yanes serves as an expert witness for civil litigation, with a specialty in on conjoint analysis and discrete-choice methodologies for class actions. She has led domestic and international market research engagements for over a decade as a Principal at Applied Marketing Science, Inc. (AMS). Her litigation research experience includes supporting affiliated academic experts in the design and execution of high-stakes consumer litigation, and in preparing rebuttals. She has managed projects with testifying experts on cases related to deceptive advertising, class actions, patent infringement and more. Patty is a master of conjoint analysis, maximum-difference scaling (MaxDiff), total unduplicated reach and frequency (TURF), and choice-modeling techniques. Patty is a member of the American Association for Public Opinion Research (AAPOR), the Institute for Operations Research and Management Science (INFORMS), the Insights Association (IA), and Women in Research (WIRe). She has gu...

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Amanda T. Bulian, MBA

Testifying Consumer Survey Expert

Applied Marketing Science, Inc.

Burlington, Massachusetts

Marketing, Advertising - Survey research, Intellectual property, Lanham Act, Trademark infringement, Trade dress infringement, Likelihood of confusion, Secondary meaning, Genericness, Dilution, False advertising, Deceptive advertising, Class action

Amanda T. Bulian is a senior manager at Applied Marketing Science, Inc. (AMS) and serves as a testifying survey expert on matters related to intellectual property, false and deceptive advertising, and class actions. At AMS, she provides expert research consultation and rebuttal critiques for consumer survey evidence in federal and state civil litigation matters and cases brought to the National Advertising Division (NAD). She has comprehensive experience designing and executing consumer surveys for matters involving trademark and trade dress likelihood of confusion, secondary meaning, and genericness, as well as surveys assessing consumer perceptions and materiality of allegedly deceptive advertising and marketing claims. Amanda’s expert services include survey design, data collection, experimental data analysis, expert report preparation, critiques of opposing expert reports, expert testimony, and guidance on the deposition and trial questioning of opposing expert witnesses. S...

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Megan Todd, PhD

Western Research Systems LLC

Ennis, Montana

Economics, Employment - Wage and Hour, Class Action, Unpaid Overtime, Discrimination, Wrongful Termination, Compensation, Economic Loss, Economic Damages, Breach of Contract, Lost Income, Meal Breaks, Employment Discrimination, Pay Equity, False Advertising

Dr. Megan Fasules Todd is a skilled economist with expertise spanning both consumer class actions and labor and employment matters. She has extensive experience analyzing economic issues in matters involving deceptive business practices, consumer overcharges, and damages estimation, as well as disputes related to pay equity, discrimination, wage and hour violations, and labor negotiations. Her deep knowledge of economic analysis and methods has helped clients navigate complex issues, including evaluating surveys and samples, cost-benefit analysis, economic impacts, hypothesis testing, and regressions. Her multidisciplinary background extends to health economics, bankruptcy, and public economics, providing an invaluable perspective to the work she does. With a passion for applying economic theory to real-world issues, Dr. Todd has established herself as trusted expert and consultant for businesses, legal teams, and organizations. Dr. Todd earned her B.A. in Mathematics and Economic...

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Philip J. Cross, Ph.D.

Class action, antitrust & economic damages expert

Kenyon Consulting LLC

New York

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Gary S. Barach, CPA, CFE, CFF, CVA

BCG Forensics, LLC

West Chester, Pennsylvania

Business Damages, Economics - fraud, business valuation, business interruption, lost profits, product recall, personal injury, employment cases, discrimination, contract disputes, dispute resolution, economic damages, construction defects, insurance claims, class action, shareholder disputes, bankruptcy, commercial litigation

Gary S. Barach, CPA, CFE, CFF, CVA, is the founder of Barach Consulting Group, LLC (f/k/a Barach & Company). The firm was established in 1976. He has been retained as a financial forensic and economic expert in over 3,800 cases. His experience in litigation includes business valuation; fraud investigation; bankruptcy; and determining economic damages arising from contract and shareholder disputes, recalled product, and construction defects. Mr. Barach is also a well established expert in economic damages arising from personal injury and discrimination litigation. Mr. Barach’s professional credentials include Certified Public Accountant (CPA), Certified Fraud Examiner (CFE), Certified Valuation Analyst (CVA), and Certified in Financial Forensics (CFF). He has been qualified as an expert in federal, state, and local courts throughout the United States and has never been precluded from offering testimony as the result of a Daubert motion. Mr. Barach’s 40 years of experience include...

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Mark A Anderson, SCLA, PCLA, FCLA, LCLA, AIC, AIM, AIS, CCI

Coverage & Bad Faith Expert Witness

Anderson Claim Consulting, LLC

Ninety Six, South Carolina

Insurance - Bad Faith, Coverage, P&C Claims, Commercial Property Claims, Personal Property Claims, Best Practices, Exclusions, Denials, E&O Claims, Class Action, Extracontractual, Catastrophes, Hurricanes, Fraud, SIU, Subrogation, Commercial Auto Claims, P&C Operations

I began my career as an adjuster trainee and worked through every operating level within Claims. As VP of Property, Auto and Liability claims at Liberty Mutual for 36 years and AVP of Commercial Property, Auto and Agribusiness claims with Nationwide for 8 years, I was responsible for Claims operations nationwide. I partnered with defense, coverage and bad faith counsel in the review and oversight of coverage disputes and bad faith litigation. Throughout my career, I have been responsible for the handling, management and leadership of PL and CL Property and Auto claims, field operations along with technical oversight, including the development and implementation of Claim Handling Guidelines "Best Practices". I am extremely familiar with coverage interpretation, best claim practices, bad faith situations, limits, exclusions, claim procedures and building construction issues. As a P&C Insurance claim consultant, I work for both plaintiffs and defendants. I am currently available as...

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Rhonda Harper, MBA

Testifying Consumer Survey and Marketing Expert

Harper Litigation Consulting and Research

Dallas, Texas

Intellectual Property, Marketing - Trademark Survey, Advertising Survey, Consumer Survey, Secondary Meaning, Genericness, Fame, Dilution, Advertising, Class Action, Intellectual Property, Consumer Behavior, Licensing, Deceptive Trade Practices, Fraudulent Business Practices, Rebuttal, Likelihood of Confusion, Trademark Infringment, Standards and Practices, Marketing

Ms. Harper is a nationally recognized marketing and consumer perception expert retained by hundreds of law firms in high-stakes matters involving trademark infringement, false and misleading advertising, licensing disputes, branding conflicts, and complex marketing issues. Since 2005, she has been retained by more than 300 law firms to conduct or rebut nearly 300 litigation-focused consumer surveys and reports, author over 100 expert marketing reports, and testify more than 150 times. Her work is grounded in rigorous methodology, real-world marketplace experience, and a deep understanding of how consumers perceive brands, messaging, and competitive claims. With over 35 years of senior executive corporate leadership, Ms. Harper previously served as a Fortune 500 Chief Marketing Officer for two companies and as Senior Vice President and General Manager at a global communications agency. She has also served as an adjunct professor of marketing and is a successful serial entrepreneur....