Compare Expert Opinions Against Trial Record

---
name: compare-expert-opinions-trial-record
task_id: intellectual-property/compare-expert-opinions-against-trial-record
description: Post-trial memorandum evaluating the consistency and supportability of competing expert opinions against the trial record for post-trial motion purposes.
activates_for: [planner, solver, checker]
---

# Skill: Compare Expert Opinions Against Trial Record

## 1. Subject-matter triage
- Identify the two damages experts, the claims/remedies at issue, and the exact verdict component being tested.
- Separate written report opinions, deposition positions, trial testimony, cross-examination concessions, and any admissibility rulings; do not assume they align.
- If the record includes excluded opinions, stipulations, limiting instructions, or withdrawn theories, treat those as boundary conditions for the memorandum.
- If the analysis involves more than one expert, model, damages theory, time period, or award component, enumerate each one first and analyze them separately.

## 2. Failure modes the skill is correcting
- Comparing reports in the abstract without checking whether trial testimony sustained, narrowed, or contradicted the report.
- Missing the effect of pretrial admissibility rulings on what can properly be used in a post-trial challenge.
- Treating deposition excerpts and transcript passages as background instead of the primary evidence of deviation, concession, or recalibration.
- Failing to test whether the verdict can be reconciled with either expert’s actual trial position and the admitted record.
- Stopping at general disagreement instead of tying each point to record support, verdict impact, and motion relevance.

## 3. Legal frameworks / domain conventions that apply
- Post-trial relief on damages typically turns on the governing rules for renewed judgment, new trial, or remittitur under the applicable civil procedure rule and any local practice standard.
- The memorandum should distinguish sufficiency-of-evidence arguments from weight-of-the-evidence arguments and from methodology/reliability challenges under the applicable expert-evidence rule.
- Under the governing expert rule, admissibility turns on sufficient facts or data, reliable principles and methods, and reliable application; once admitted, the issue becomes whether the trial record supports the verdict and the opinion actually given.
- If the remedy is statutorily bounded or formula-driven, identify the controlling statute, regulation, or common-law cap and test the award against that framework.
- A jury may choose among competing expert views, but the verdict must still be traceable to evidence in the record and to a legally permissible damages theory.

## 4. Analytical scaffolds
- Expert-by-expert comparison: for each expert, compare report, deposition, trial direct, cross, rebuttal, and any clarifications against the same factual points.
- Supportability check: identify what in the admitted record supports each material proposition, what undermines it, and whether the expert changed position.
- Verdict reconciliation: determine whether the award falls within, departs from, or selectively borrows from the experts’ views, and whether the record explains that result.
- Reliability assessment: assess whether any opinion depends on assumptions, extrapolations, or exclusions that were challenged, corrected, or left unreconciled at trial.
- Motion-theory mapping: align each inconsistency with the available post-trial vehicle and the legal standard governing that vehicle.
- For every material issue, state the scale of the problem, identify the interacting record source, and explain the practical consequence for the verdict or motion.

## 5. Vertical / structural / temporal relationships
- Track shifts over time: report, deposition, pretrial motions, opening, direct, cross, rebuttal, post-trial.
- Track hierarchy of sources: written expert materials, sworn testimony, admitted exhibits, rulings, then verdict; later steps may narrow earlier opinions.
- Track cross-expert relationships: where one expert’s assumptions depend on, rebut, or contradict the other expert’s inputs.
- Track claim-to-damages relationships: tie each opinion to the specific liability theory, damages category, and period it addresses.

## 6. Output structure conventions
- Write a memorandum in conventional legal form with a short issue statement, governing standards, expert-by-expert analysis, verdict-consistency discussion, and post-trial recommendation.
- Include a comparison table or issue chart with columns for: issue, report position, trial position, record support or conflict, legal consequence, and motion relevance.
- Use pinpoint citations to transcript pages/lines, exhibit numbers, and ruling references throughout; avoid uncited conclusions.
- When stating a legal proposition, name the controlling authority or rule that supports it.
- Close with a Recommended Actions section that states what to argue, who should do it, and the timing tied to the post-trial motion deadline or hearing schedule.
- Keep the focus on supportability and inconsistency; do not re-litigate liability unless it bears directly on damages or the verdict’s coherence.