Expert class library
Antitrust
Before-and-after regression · Benchmark or yardstick comparison
Plaintiff common-impact economistPlaintiff sidePricing structure analysis · Class-wide regression with impact dummies
Indirect-purchaser pass-through economistEither sidePass-through regression · Distribution chain mapping
Defense class-certification antitrust economistDefense sideUninjured class member analysis · Disaggregated regression testing
Market-definition economistEither sideHypothetical monopolist (SSNIP) test · Critical loss analysis
Exclusionary-conduct damages economistPlaintiff sideBut-for market share modeling · Yardstick and benchmark analysis
Labor-market antitrust economistPlaintiff sideCompensation structure analysis · Wage regression with conduct variables
Defense cartel econometricianDefense sideRe-estimation of the plaintiffs' overcharge regression · Benchmark period and structural break testing
Securities
Market-model event study · Price impact rebuttal
Plaintiff event-study and loss-causation econometricianPlaintiff sideSingle-firm event study · Disaggregation of confounding information
Market-efficiency expertPlaintiff sideCammer factor analysis · Krogman factor analysis
Securities accounting and GAAP expertEither sideGAAP compliance review · Restatement analysis
Section 11 negative causation economistDefense sideEvent study of disclosure dates · Market and industry index comparison
Commercial
Before-and-after method · Yardstick method
Forensic accountantEither sideFund tracing · Financial statement reconstruction
Industry custom and practice expertEither sideTrade usage analysis · Contract term interpretation in context
Commercial damages rebuttal expertDefense sideAssumption sensitivity testing · Causation and alternative explanation analysis
Banking and lending standards expertEither sideUnderwriting guideline review · Loan file sampling
Intellectual property
Georgia-Pacific factor analysis · Comparable license analysis
Trademark likelihood-of-confusion survey expertEither sideEveready survey format · Squirt survey format
Patent lost-profits damages expertPlaintiff sidePanduit factor analysis · Market share approach
Defense patent damages expertDefense sideNon-infringing alternative analysis · Design-around cost estimation
Technical patent infringement expertPlaintiff sideElement-by-element claim comparison · Doctrine of equivalents analysis
Trade-secret damages expertPlaintiff sideUnjust enrichment calculation · Avoided cost and head-start analysis
Copyright damages and apportionment expertEither sideInfringer profits apportionment · Deductible expense analysis
Patent invalidity and prior-art expertDefense sideAnticipation analysis · Obviousness and motivation to combine
Mass tort and product liability
Bradford Hill causation analysis · Weight-of-the-evidence review
Specific-causation physicianPlaintiff sideDifferential etiology · Medical record review
Product design engineerPlaintiff sideAlternative design analysis · Failure mode analysis
Toxicologist (dose-response)Either sideDose-response assessment · Exposure reconstruction
Warnings and human factors expertEither sideWarning adequacy analysis · ANSI Z535 standards review
FDA regulatory expertEither sideRegulatory history review · Labeling change analysis
Cumulative exposure causation expert (asbestos)Plaintiff sideCumulative dose theory · Fiber type potency analysis
Pharmacovigilance and signal detection expertPlaintiff sideFAERS and MAUDE data mining · Disproportionality analysis (PRR, ROR)
Environmental and toxic tort
Task-based exposure reconstruction from work history and co-worker testimony · Use of published exposure studies and historical air monitoring
Hydrogeologist (contaminant fate and transport)Either sideSite characterization from borings, wells and sampling · Groundwater flow and contaminant transport modeling
Personal injury
Momentum and energy analysis · Event data recorder download
Forensic economist (lost earnings)Either sideWorklife expectancy analysis · Earnings capacity projection
Biomechanical engineerDefense sideInjury mechanism analysis · Force and acceleration estimation
Life care plannerPlaintiff sideMedical needs assessment · Future care cost projection
Medical standard-of-care expertEither sideStandard of care comparison · Medical record review
Vocational rehabilitation expertEither sideTransferable skills analysis · Labor market survey
Slip resistance and walkway safety expertEither sideTribometer testing (variable incidence tribometer, BOT-3000E) · ASTM F2508 validation and ANSI A326.3 comparison
Alcohol toxicology and retrograde extrapolation expertEither sideRetrograde extrapolation · Widmark formula calculation
Transportation
FMCSR compliance review (driver qualification, hours of service, inspection and maintenance files) · Hiring, training and supervision audit against carrier policy
Human factors (driver perception and reaction) expertEither sidePerception-reaction time analysis · Driver expectancy and positive guidance analysis
Highway design and traffic engineerEither sideMUTCD and state standard drawing compliance review · Temporary traffic control (work zone) plan review
Employment
Multiple regression of pay or promotion · Standard deviation analysis
Wage-and-hour damages expertPlaintiff sideRepresentative sampling · Time and motion study
Defense labor economistDefense sideDisaggregated analysis by decision unit · Omitted variable testing
Industrial-organizational psychologistEither sideTest validation study · Job analysis
Consumer class actions
Choice-based conjoint survey · Willingness-to-pay estimation
Consumer perception survey expertEither sideConsumer perception survey · Materiality survey
Defense survey rebuttal expertDefense sideSurvey design critique · Control group testing
Hedonic regression price-premium economistPlaintiff sideHedonic regression · Product attribute coding
Medical malpractice
Labor curve and partogram review · Pitocin dosing review
Emergency medicine standard-of-care expertEither sideChart and triage record review · Differential diagnosis analysis
Pediatric neurology birth-injury causation expertEither sideDifferential etiology · Review of fetal monitoring, cord gases and Apgar scores
Anesthesiology standard-of-care expertEither sideAnesthesia record and vital sign trend review · Preoperative evaluation and ASA classification review
Radiology missed-diagnosis expertEither sideBlinded and unblinded image review · Comparison with prior studies
General surgery standard-of-care expertEither sideOperative report and video review · Comparison with recognized operative techniques such as the critical view of safety
Orthopedic surgery standard-of-care expertEither sideOperative and implant record review · Imaging review before and after surgery
Hospital nursing standard-of-care expertEither sideNursing chart and flowsheet review · Review of vital sign trends and early warning criteria
Product engineering
NFPA 921 scientific method · Fire pattern analysis
Automotive crashworthiness engineerPlaintiff sideCrash testing and sled testing · FMVSS compliance review
Machine guarding and industrial equipment engineerEither sideANSI B11 and OSHA 1910 comparison · Guarding and interlock analysis
Metallurgical failure analystEither sideFractography · Scanning electron microscopy
Electrical engineer (product failure)Either sideCircuit and schematic analysis · Component failure testing
Occupant restraint and airbag engineerEither sideBelt witness mark examination · Airbag control module data review
Tire failure analystEither sideTire teardown and shearography · Belt adhesion analysis
Civil rights
Use-of-force continuum and policy comparison · POST training standard review
Correctional healthcare standards expertPlaintiff sideReview of medical records, sick-call requests and grievances · Comparison of intake screening and care with NCCHC and ACA standards
False confession and interrogation expertPlaintiff sideReview of interrogation recordings, transcripts and police reports · Identification of interrogation techniques such as isolation, confrontation and minimization
Eyewitness identification expertEither sideReview of identification procedures, such as show-ups, photo arrays and lineups · Analysis of estimator variables such as stress, lighting, distance, weapon focus and cross-race effects
Forensic science
Autopsy and histology review · Injury pattern interpretation
Digital forensics examinerEither sideForensic imaging with write blockers and hash verification · Mobile device extraction with tools such as Cellebrite and Magnet Axiom
Firearms and toolmark examinerEither sideComparison microscopy of test-fired and evidence bullets and cartridge cases · AFTE theory of identification based on sufficient agreement of individual characteristics
Cell site location analystEither sideAnalysis of carrier call detail records and cell site lists · Mapping of tower locations, sectors and azimuths
Forensic document examiner (handwriting)Either sideComparison of questioned writing with known exemplars · Analysis of letter forms, spacing, pressure, line quality and natural variation
Forensic toxicologistEither sideGas chromatography and mass spectrometry testing of blood and urine · Blood alcohol analysis and retrograde extrapolation
DNA and forensic genetics expertEither sideSTR profiling and mixture interpretation · Probabilistic genotyping with software such as STRmix and TrueAllele
Polygraph examinerEither sideComparison question technique · Physiological chart scoring of respiration, skin conductance and cardiovascular responses
Healthcare fraud and False Claims Act
Probability sample design (RAT-STATS) · Stratified random sampling
Medical coding and billing auditorEither sideCPT and E/M level review · NCCI edit analysis
Real estate and condemnation
Professional liability
Family law
Income and market approaches · Excess earnings method
Child custody evaluatorEither sideParent and child interviews · Parent-child observation
Insurance
Claim file review · Industry claims practice comparison
Insurance actuaryEither sideLoss development triangles · Reserve adequacy analysis
Property loss causation engineerEither sideSite inspection and damage mapping · Wind versus water analysis
Business interruption loss accountantEither sideProjected versus actual income analysis · Period of restoration analysis
Construction
Critical path method analysis · Windows analysis
Construction defect engineerEither sideForensic site investigation · Building code compliance review
Geotechnical engineerEither sideSubsurface boring and test review · Standard penetration testing (ASTM D1586)
Building envelope and water intrusion expertEither sideWater testing (ASTM E1105, AAMA 511) · Destructive and invasive testing
Construction site safety expertEither sideReview of OSHA construction standards (29 CFR Part 1926) and industry practice · Site safety plan and contract safety provisions review
International arbitration
Bankruptcy and valuation
Discounted cash flow analysis · Comparable company multiples
Solvency expertEither sideBalance sheet test · Cash flow test
Real estate appraiserEither sideSales comparison approach · Income capitalization approach
Valuation and fairness-opinion economistEither sideDiscounted cash flow analysis · Comparable companies and guideline public company multiples
For how to read these alongside the cases, see the guides, the sample brief and how it works. The library summarises public decisions for orientation; it is not legal advice. Read the opinion before relying on any ruling.