Professional Services Legal Services Complex Litigation

Expert Witness Services

High-stakes engagements requiring expert coordination, evidence management, and structured decision paths.

Example organizations in this space: Analysis Group CRA International FTI Consulting Navigant

This interactive experience is the shipped product itself — the same application code customers run in production, mounted read-only in your browser over a real sample journey. Not a video, not a mockup: because the demo and the product are one codebase, it can never drift from the real thing.

Inside this journey
  1. Case Intake & Outcomes

    Align on case objectives, disclosure deadlines, disputed issues for expert analysis, key stakeholders, and measurable success criteria for the engagement.

    Discovery Questions

    Case snapshot, fast and focused

    • Tell us the brief case posture and the current expert report deadline.
    • Select the practice area that best fits this matter Options: Antitrust/competition, Commercial contract/dispute, Intellectual property, Securities/financial, Insurance coverage/loss allocation, Regulatory/administrative, Torts/personal injury, Other
    • Indicate the forum where the matter will be decided Options: Federal trial court, State trial court, Arbitration panel, Administrative agency, Appellate court, Unknown/undetermined
    • Approximately how many parties are aligned on your side (plaintiffs or defendants)? Options: Single party, 2-5 parties, 6-20 parties, More than 20
    • What single missing fact or document would make you stop retaining an outside expert right now?

    Where the pressure is: deadlines and exposure

    • Which disclosure or methodological risk feels most likely to derail your expert's admissibility? Options: Unverifiable data, Unsupported modeling assumptions, Prior inconsistent publications, Expert lacks domain bench depth, Communication style undercuts credibility, Other
    • Walk me through the timeline constraints and the next three hard dates we should know.
    • How many days from today until your nearest mandatory deadline? Options: Under 14 days, 14 to 28 days, 29 to 60 days, 61 to 120 days, More than 120 days
    • If the expert cannot produce a defensible report within your disclosure window, would you withdraw the claim, seek an extension, reassign internally, or take another path? Options: Withdraw claim, Seek extension, Reassign internally, Proceed without expert, Undecided
    • Who on your team owns the deadline and can authorize expert retention? Options: Lead partner, Senior associate, In-house litigation director, Practice group co-lead, Committee/consensus

    Where the case is fragile: impeachment and methodology risk

    • What prior testimony, publication, or public statement by a proposed expert would make you worry about impeachment risk?
    • Describe the opposing expert positions that have most complicated your strategy in similar matters.
    • How often do opposing experts in your matters rely on the same modeling assumptions you expect to use? Options: Always, Often, Sometimes, Rarely, Never
    • By what timeline would opposing counsel need underlying data to mount a timely admissibility challenge? Options: Immediately upon request, Within 7 days, Within 14 days, Within disclosure window, Depends on the request
    • Who typically handles vetting prior testimony and publications on your team? Options: Lead partner, Senior associate, Paralegal/researcher, External consultant, Shared responsibility

    How you want the expert to perform in deposition and at trial

    • What courtroom behavior from a testifying expert would make the judge and jury discount their entire opinion?
    • Describe the communication style you prefer from experts during deposition and trial Options: Plain and accessible, Technical but concise, Academic and cautious, Firmly advocacy-aligned, Adaptable to audience
    • How important is a candidate's prior Daubert survival record when you choose between otherwise similar experts? Options: Critical, Very important, Somewhat important, Not important
    • If an expert's prior testimony contains statements that could be used against you, would you proceed with mitigation, require a different candidate, or decline to retain? Options: Proceed with mitigation plan, Require different candidate, Decline to retain, Undecided
    • Would you terminate the engagement if a proposed expert failed a 2-hour mock cross-examination? Options: Yes, No, but require remediation, Depends on nature of failure, Unsure

    The other options on the table

    • List the other options you are considering, including internal teams, independent academics, boutique expert firms, and large consulting firms.
    • Which internal resources could you use instead of retaining an outside expert? Options: In-house economist/analyst, Corporate finance team, Independent academic contact, No viable internal resource, Other
    • What would have to be true about your current in-house approach for you to keep it rather than hire outside help?
    • Have any colleagues proposed solving this without an outside vendor or partner? Options: Yes, No, Not sure
    • Would you switch from internal plans if an external expert can demonstrate prior admissibility and a clean impeachment record this week? Options: Yes, Maybe, No

    Practical readiness: data, compliance, and access

    • What single data or compliance constraint could block the expert from completing the analysis on time?
    • Select the data sources the expert will need access to for damages modeling Options: Transaction records, Audited financial statements, Internal pricing history, Customer or subscriber lists, Third-party market data, Regulatory filings, Other
    • Identify the team or role that controls access to those sources and the typical turnaround time for producing them
    • Do you have regulatory, confidentiality, or protective order restrictions that limit data sharing? Options: Yes, No, Unsure
    • Please outline the gating approvals or redactions required for data release, if any.
    • Do you have secure data transfer methods available now that the expert must use (SFTP, secure portal, encrypted upload)? Options: Yes, No, Need to set up
    • How many internal hours per week can your team commit to support expert analysis and model validation? Options: Under 5 hours, 5 to 10 hours, 11 to 20 hours, 21 to 40 hours, More than 40 hours

    Scope and success: what would make this engagement worth it

    • Name the measurable outcome, stated as a concrete metric, that would make you call this engagement a success.
    • Choose from the list the deliverables and formats that must be produced for you to accept the work Options: Expert report with methodology section, Rebuttal report, Fully documented model files, Expert CV and prior testimony list, Deposition prep session(s), Trial exhibits and visuals
    • Identify the roles that must sign off on final deliverables and the acceptance criteria they apply
    • When a pilot analysis aligns with your expectations, which internal outcome typically follows? Options: Retain expert and proceed, Expand scope of work, Fast-track deposition/trial prep, Require additional validation, No immediate change
    • How soon after initial retention do you expect a draft report to be delivered? Options: 2 weeks, 4 weeks, 6 weeks, 8 weeks, Depends on data readiness

    Decision mechanics: price, approvals, and next steps

    • Name the single logistical or budgetary barrier that would stop you from signing an engagement this week.
    • State your decision timeline and the role who will be the final approver Options: Immediately, Within 1 week, 1 to 2 weeks, 2 to 4 weeks, More than 1 month
    • How would you prefer fees structured for this engagement? Options: Hourly time and materials, Fixed fee for report, Fixed plus success fee, Retainer plus hourly, Alternative arrangement
    • Do you require an NDA or master services agreement before sharing confidential data? Options: NDA required, MSA required, Neither required, Already in place
    • Please indicate whether you can schedule a selection call within 5 business days if provided a sample expert outline, CV, and proposed timeline within 48 hours Options: Yes, Maybe, No
  2. Evidence & Witness Working Sessions

    Run structured sessions to review facts, interview witnesses, align methodology with counsel, and conduct mock cross-examination to assess impeachment risk.

    Working Meetings

    • Engagement Assumptions and Evidence Intake
    • Structured Witness Interview Session 1
    • Evidence Review and Methodology Alignment with Counsel
    • Mock Cross-Examination and Impeachment Testing
    • Evidence and Witness Risk Register and Mitigation Plan
    • Produce the mock cross scorecard and annotated transcript for review.
    • Compile prior publications and testimony that may affect admissibility and prepare rebuttal notes.
    • Explain scoring rubric and objectives for the mock cross
    • Mock cross-examination scorecard with ranked weaknesses and exemplar strong answers.
    • List of specific revisions to testimony scripts and report language to mitigate impeachment risk.
    • Schedule and scope of additional preparation sessions based on performance gaps.
    • Confirm case objectives and success criteria
    • Update report passages and expert talking points to address identified weaknesses.
    • Plan follow-up mock sessions focusing on the highest risk issues before depositions.
    • Review identified risks and categorize by impact
    • Finalized risk register with mitigation actions, owners, and deadlines accepted by stakeholders.
    • Agreed cadence for risk review and escalation path documented.
    • Next checkpoint meeting scheduled for status review before disclosure or deposition dates.
    • Publish the finalized risk register to the shared workspace and notify the stakeholder list.
    • Execute the first-wave mitigation tasks for high severity risks by the agreed deadlines.
    • Schedule the next risk review and confirm availability for final deposition prep sessions.
    • Complete evidence inventory with provenance and outstanding gaps recorded.
    • Prioritized witness roster produced and scheduled for interviews or follow-up.
    • Immediate data and collection tasks with deadlines documented for the next session.
    • Add all provided documents to the shared evidence inventory with metadata tags.
    • Request and track missing documents identified during intake with target delivery dates.
    • Schedule the first set of structured witness interviews based on the prioritized roster.
    • Written witness summary produced with timeline and key factual assertions recorded.
    • Set interview scope and ground rules
    • List of statements requiring corroboration and potential impeachment flags captured.
    • Clear list of follow-up documents or clarifying questions to resolve disputed points.
    • Draft and circulate the witness summary for accuracy review within the agreed timeframe.
    • Collect or pull the documents identified as corroborating or contradicting the witness statements.
    • Schedule a follow-up interview if material discrepancies or new facts emerge.
    • Present proposed analytic framework
    • Ratified methodology memo approved for drafting the expert analysis and report.
    • Complete list of data inputs and documentary evidence required to run the models.
    • Documented plan to address identified admissibility or prior-testimony risks.
    • Produce a methodology memo reflecting agreed assumptions, models, and known limitations.
    • Request the specified data items and documents by the agreed dates to support analysis.
    • Collect and catalog available evidence
    • Conduct mock cross-examination
    • Assign mitigation actions and set deadlines
    • Map evidence to model inputs and identify gaps
    • Obtain witness chronological narrative
    • Targeted questioning on disputed issues
    • Identify and prioritize witnesses
    • Assess admissibility and Daubert risk areas
    • Confirm communication and escalation protocol
    • Debrief and capture observed weaknesses
    • Confirm final methodology decisions and deliverables
    • Sign off and schedule next checkpoints
    • Confirm follow-up evidence and close
    • Agree on immediate remediation steps
    • Document evidence gaps and next steps
  3. Engagement Scope

    Define the deliverables (expert search, vetting, damages models, report drafts, deposition and trial prep), responsibilities, timeline, and explicit out-of-scope items.

    Scope Configuration

    • Expert Search and Candidate Vetting
    • Prior Testimony and Publication Review
    • Forensic Document and Data Analysis
    • Economic Damages Model Development
    • Causation and Counterfactual Analysis
    • Court-Ready Expert Report Drafting
    • Rebuttal Report Preparation
    • Daubert Support Memorandum
    • Deposition Preparation with Mock Cross-Examination
    • Trial Testimony and Direct-Examination Support
    • Exhibit and Demonstrative Development
    • Workpapers, Reproducible Code, and Data Package
    • Sensitivity and Reliability Testing of Models
    • Regulatory Testimony and Declaration Package

    Scope Questions

    Expert Search and Candidate Vetting

    • Identify the core subject-matter area for the search (e.g., antitrust price-impact, lost profits in contract dispute, environmental remediation cost estimation).
    • List the minimum credibility artifacts you require for candidates (examples: curriculum vitae with testimony list, copies of prior district-court reports, docket citations to prior qualifications).
    • Specify the allowable jurisdictions or courts for prior testimony that matter to you (e.g., federal district court, state supreme court, arbitration panels). Options: Federal courts only, State courts acceptable, Arbitration panels acceptable, International tribunals acceptable, No jurisdictional restriction
    • Provide the timeline for expert retention relative to your disclosure deadline (e.g., retain within 2 weeks, retain within 4 weeks). Options: Within 1 week, Within 2 weeks, Within 3-4 weeks, Flexible beyond 4 weeks
    • Indicate non-negotiable disqualifiers for candidates (examples: prior advocacy for the opposing party on the same issues, public statements inconsistent with your theory, lack of direct industry experience).
    • Name any specific industries or companies where you prefer the expert to have direct work experience (e.g., telecom carriers, commercial banks, pharmaceutical manufacturers).

    Prior Testimony and Publication Review

    • Specify which prior materials we should obtain and review for each candidate (examples: full deposition transcripts, published articles, expert reports listed by case docket number).
    • Indicate whether you require an impeachment-risk memo for each candidate that flags inconsistent prior opinions, academic publications, or industry consulting engagements. Options: Yes, for all finalists, Yes, for shortlisted candidates only, No
    • Identify the maximum acceptable number of prior depositions or reports citing issues you consider high risk (e.g., more than two opposing-qualification challenges). Options: 0, 1, 2, 3+
    • Describe the scope of publication checks you want performed (examples: Google Scholar citation list, SSRN papers, industry white papers, op-eds).
    • Indicate whether we should obtain courtroom rulings related to prior admissibility challenges (e.g., Daubert/Kumho orders) and include redline excerpts. Options: Yes, include rulings, Only if there was a successful challenge, No
    • Who on your team will review and approve the vetting memo and candidate shortlist?

    Forensic Document and Data Analysis

    • List the primary data sources we must analyze (examples: production BATES ranges, transactional CSV exports, accounting general ledger, ERP extracts).
    • Attach or name the dominant file formats and sizes we should expect (examples: Excel workbooks with macros, SQL database exports, PDFs, email ESI TAR files).
    • Specify whether privilege-redaction or a privilege-log review is required before forensic processing. Options: Yes, redaction before processing, Privilege log review only, No
    • Indicate required deliverables from the forensic review (examples: chain-of-custody log, searchable load file, concordance of key documents). Options: Chain-of-custody log, Searchable document set (OCR/PDF), Extracted datasets (CSV), Privilege log mapping, Other
    • Identify any specific custodians or email accounts that must be prioritized for early review (provide aliases or BATES ranges if available).
    • Estimate the expected record volume to scope processing and sampling (e.g., number of documents or rows). Options: Under 10,000 documents/rows, 10,000-100,000, 100,000-1,000,000, Over 1,000,000

    Economic Damages Model Development

    • Specify the damages theories to model (examples: lost profits using before-and-after analysis, reasonable royalty via Georgia-Pacific factors, diminution in value). Options: Lost profits, Reasonable royalty, Diminution in value, Statutory damages, Other
    • Identify the primary financial inputs we must obtain from you (examples: revenue by product line, cost of goods sold by month, ledger-level entries).
    • State the preferred deliverable format for the model (examples: Excel workbook with locked formula tabs, Python/R scripts plus CSV inputs, integrated dashboard). Options: Excel workbook, R/Python scripts + CSV, Both Excel and scripts, Other
    • Indicate the discount rate or discount-rate approach you want applied to future-value damages (examples: company WACC, market-risk premium approach). Options: Use provided discount rate, We need help estimating discount rate, Apply statutory rate where applicable
    • Identify mitigation or offset items that the model must accommodate (examples: alternative revenue sources, saved costs, insurance recoveries).
    • Who will provide signed source-authority for financial inputs (name and role), and by what date relative to the report deadline?

    Causation and Counterfactual Analysis

    • Describe the counterfactual scenarios to be analyzed (examples: but-for market share absent alleged conduct, counterfactual pricing path using historical trend).
    • Indicate key external data required for counterfactuals (examples: market-index time series, competitor sales data, industry reports).
    • Specify the econometric approaches you prefer or that courts in your jurisdiction have accepted (examples: difference-in-differences, synthetic control, hedonic regressions). Options: Difference-in-differences, Synthetic control, Hedonic regression, Time-series forecasting, None specified—advise
    • Identify required reliability checks for the causation analysis (examples: alternative sample windows, placebo tests, instrument-variable sensitivity).
    • Name datasets you will provide for counterfactual construction and include formats and expected delivery dates.
    • Specify whether you need an expert-ready chain-of-evidence table linking each counterfactual input to a production BATES range or source file. Options: Yes, No, Only for core inputs

    Court-Ready Expert Report Drafting

    • What acceptance criteria will confirm the expert report meets disclosure obligations under Federal Rule of Civil Procedure 26(a)(2) (examples: CV with list of cases, all relied-upon data attachments, model appendices)?
    • Specify the report structure you require (examples: executive summary, methodology, data sources with BATES references, calculation appendix, limitations). Options: Standard FRCP 26(a)(2) structure, Executive summary plus technical appendix, Custom structure—describe below
    • Indicate whether you require redline-able draft rounds and how many review cycles we should budget (examples: two draft rounds, three draft rounds). Options: One draft, Two drafts, Three drafts, Open-ended
    • Identify any jurisdiction-specific citation or formatting rules the report must follow (examples: local rules on exhibits, page limits, court-seal requirements).
    • Provide the deadline for the final report and the date you expect to receive the draft for internal review.
    • Who on your side will provide factual corrections and sign off on factual sections of the report (name and role)?

    Rebuttal Report Preparation

    • Identify the opposing expert reports and the key opinions you expect to rebut (include docket numbers or BATES ranges where available).
    • Specify the time window available to prepare a rebuttal after receiving the opposing disclosure. Options: Less than 7 days, 7-14 days, 15-30 days, More than 30 days
    • Indicate whether you want a focused technical rebuttal (targeted methodological points) or a full alternative damages estimate. Options: Technical rebuttal only, Full alternative damages model, Both
    • List the core documents we should prioritize to develop the rebuttal (examples: opposing model Excel workbook, relevant depositions, underlying contracts).
    • State whether rebuttal work requires expedited forensic validation of opposing datasets (e.g., row-level reconciliation with your production). Options: Yes, expedited validation, Standard validation, No
    • Who will own final approval of the rebuttal scope and whether to proceed to full alternative modeling?

    Daubert Support Memorandum

    • Specify the admissibility risks you want addressed in the memorandum (examples: methodology reliability, expert qualifications, exemplar prejudicial statements).
    • Identify applicable standards or landmark decisions to anchor the memorandum (examples: Daubert v. Merrell Dow, Kumho Tire, regional appellate decisions).
    • Indicate whether you require proposed briefing language or a sealed expert declaration in support of the memorandum. Options: Memorandum only, Memorandum plus proposed briefing language, Include draft declaration
    • List supporting exhibits to include with the memorandum (examples: methodology flowchart, validation results, prior-court rulings for the expert).
    • Provide the deadline for the Daubert support deliverable relative to the filing date.
    • Name the counsel who will coordinate the Daubert filing and who should receive draft review copies.

    Deposition Preparation with Mock Cross-Examination

    • Specify the format of mock examinations you prefer (examples: full mock with actor-led cross, focused methodology grilling, hot-seat rapid-fire). Options: Full mock with actor, Focused methodology mock, Hot-seat rapid-fire, Combination
    • Indicate the number of mock sessions desired and their timing relative to the deposition (examples: two sessions, final session 3-5 days before deposition). Options: One session, Two sessions, Three sessions, More than three
    • List core documents to use during the mock (examples: draft report, opposing expert report, key deposition transcripts, demonstrative slides).
    • Name any sensitive lines of questioning to rehearse (examples: prior inconsistent statements, consulting engagements, methodological limitations).
    • Who will play the role of opposing counsel in mocks and who will observe and score performance?
    • Specify deliverables after mock sessions (examples: written Q&A log, scored performance summary, suggested language for direct-examination). Options: Q&A log, Performance summary, Suggested direct language, All of the above

    Trial Testimony and Direct-Examination Support

    • Specify the anticipated trial role for the expert (examples: primary testifying expert, rebuttal witness, declaration-only witness). Options: Primary testifying expert, Rebuttal witness, Declaration-only witness, Undetermined
    • Identify logistics we should plan for (examples: travel to courthouse, secure exhibit binder, real-time model runs in trial laptop).
    • Indicate whether you require courtroom technology support for live demonstratives (examples: trial presenter software, video playback, live polling of jurors). Options: Yes, No, Limited support
    • Name the hearing schedule and any in-court deadlines we should coordinate with the expert's calendar.
    • Provide any venue-specific affidavit or disclosure requirements for testifying experts (examples: judge-specific orders, local rule forms).
    • Who will be the day-of trial point of contact for logistics and exhibit handling (name and phone/email)?
  4. Engagement Agreement

    Finalize fee structure, terms (MSA/NDA/SOW as needed), scheduling milestones, and mutual obligations before work begins.

    Agreement Modules

    • Master Services Agreement (MSA)
    • Statement of Work (SOW)
    • Engagement Letter & Fee Schedule
    • Confidentiality & Non-Disclosure Agreement (NDA)
    • Scheduling & Milestones Agreement
    • Expenses & Reimbursement Addendum
    • Data Access & Security Addendum (conditional)
    • Acceptance, Closeout & Ongoing Support Agreement
  5. Report & Testimony Delivery

    Execute the plan: expert selection, data analysis and modeling, report preparation, deposition preparation, and trial testimony logistics with named owners and checkpoints.

  6. Case Outcome & Ongoing Support

    Confirm acceptance of deliverables, capture lessons learned, and maintain a shared channel for post-case issues, follow-up analyses, and enhancement requests.

    Success Reviews

    • Post-Delivery Health Check (Week 1-4)
    • First Outcome Measurement (Week 4-10)
    • Acceptance Gate Review (Day ~90)
    • Ongoing Case Support Quarterly Review

    Issues & Enhancements

    • Schedule the next quarterly review and circulate a brief pre-read with updated metrics.
    • A documented acceptance decision is recorded for each acceptance criterion, with pass/fail outcomes.
    • Named signatory or buyer owner has confirmed the acceptance decision where required by the engagement governance.
    • Any required remediation items are bounded, dated, and captured for closure tracking outside of the acceptance gate.
    • Publish the formal acceptance record showing pass/fail status for each criterion and the named signatory.
    • If remediation is required, publish the remediation scope, deliverables, and deadline for each open item.
    • Add acceptance outcomes to the shared post-case channel and update the blocker tracker.
    • Review open post-case issues and follow-up analyses
    • Open follow-up analyses are tracked with clear delivery dates and owners.
    • The rate of implementation blockers resolved since the prior review is documented and acceptable to both parties.
    • Each prioritized initiative has a client-side owner assigned or a clear plan to assign one.
    • Update the shared support tracker with statuses, owners, and delivery dates for all open follow-up analyses.
    • Publish the lessons-learned summary and any agreed process changes to the shared channel.
    • Confirm deliverable receipt and completeness
    • Buyer confirms receipt of all deliverables or documents missing items to be remedied.
    • Immediate blockers are identified, triaged, and assigned remediation actions with target dates.
    • A shared post-case communication channel and escalation path are agreed.
    • Publish a short deliverables checklist noting any missing items and expected delivery dates.
    • Log urgent defects in the shared channel and assign remediation target dates.
    • Confirm the persistent post-case communication channel and document escalation contacts.
    • Present outcome data against acceptance criteria
    • Stakeholders agree the current findings acceptance rate and prioritized action count status and understand root causes for any gaps.
    • A short, dated remediation plan is agreed to address any unresolved blockers before the Acceptance Gate.
    • A clear timeline to the Acceptance Gate is confirmed, including verification steps for each remediation item.
    • Publish a remediation plan listing each corrective action, its acceptance criteria, and target completion date.
    • Collect and circulate any additional evidence or clarifying documentation needed to improve findings acceptance rate.
    • Update the shared channel with a tracker for implementation blockers resolved and open items.
    • Restate acceptance criteria and numeric targets
    • Reconfirm acceptance criteria and owners
    • Present final outcome data
    • Track blocker resolution and owner assignment
    • Root-cause analysis for any shortfalls
    • Lessons learned and process improvements
    • Agree corrective actions and timelines
    • Early issue triage
    • Document pass/fail per criterion and formal decision
    • Confirm readiness for Acceptance Gate
    • Agree limited remediation (if required)
    • Operational next steps and monitoring
    • Short-term remediation planning
    • Shared channel and escalation path
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