Retain.Expert Witness

The expert witness library

Practical guides on expert witness work — for the attorneys who retain physicians, and the physicians who serve.

Fundamentals

Medical Patent Expert Witnesses: Physicians in Device and Pharmaceutical IP Litigation

Why patent cases over medical devices and drugs need physician experts, what the POSA standard demands, and how to choose the right one.

Michael TorresMichael TorresSep 12, 20263 min read
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Medical Patent Expert Witnesses: Physicians in Device and Pharmaceutical IP Litigation

Why patent cases over medical devices and drugs need physician experts, what the POSA standard demands, and how to choose the right one.

Sep 12, 2026 · 3 min read

Medical Billing and Coding Expert Witnesses: Fraud, Overbilling, and Reimbursement Disputes

Where billing and coding experts fit in FCA, payer, and fee-dispute litigation, and when you need a physician versus a certified coder.

Sep 12, 2026 · 2 min read

Physician Compensation Expert Witnesses: Fair Market Value, Stark Law, and Pay Disputes

Where compensation experts fit in Stark and Anti-Kickback matters, FMV opinions, and physician contract litigation.

Sep 12, 2026 · 2 min read

Electronic Health Record (EHR) Expert Witnesses: Audit Trails, Metadata, and Documentation Disputes

How EHR audit trails, late entries, and copy-paste documentation shape medical litigation, and when to retain an EHR expert witness.

Aug 22, 2026 · 2 min read

What Is an Expert Witness?

What qualifies someone as an expert witness, what they do at each stage of litigation, and how courts decide whose opinion the jury hears.

Aug 14, 2026 · 2 min read

Expert Witness Fees: What Physicians Charge in 2026

Typical hourly rates for record review, deposition, and trial by specialty, and how engagement structures and retainers work.

Aug 14, 2026 · 1 min read

Expert Witness Qualifications: What Courts Require

The qualification standards for medical expert witnesses, evidentiary rules, state malpractice statutes, and the practical credibility bar.

Aug 14, 2026 · 1 min read

Expert Witness Glossary

Plain-English definitions of the terms attorneys and physicians encounter in expert witness work.

Aug 14, 2026 · 1 min read

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