Expert Witnesses for Litigation
You bring the case. We find the expert who can make it, whatever the field: software, electronics, pharmaceuticals, medical devices, economic damages, and more, in the US and internationally.
Free. Confidential. Conflicts-checked. Paid only if you retain.
A technical case usually comes down to one witness.
The wrong one looks perfect on a CV. Then the paper expert gets excluded at Daubert, folds at deposition, or spends your client's budget learning the technology. Finding an expert through your own network, an associate, or a directory is a lottery, and you only learn you drew the paper expert at the worst possible moment.
Before You Search
Why not just run the search yourself?
Four ways to find an expert witness, and what each one costs you.
Run your own search
Your network is a coincidence.
Limited to who you happen to know. The exact niche expert, with a clean conflicts position, is usually outside it. Our database is a system.
Hand it to an associate
A resume isn't a Daubert record.
Burns billable hours your client would rather see spent on the merits. Telling an expert with a tested record from a good resume takes vetting experience, not just a careful reader.
Use a directory or competitor
You still vet everyone yourself.
Generic, often pay-to-list names with no engineering vetting. You still do the work of figuring out who is real.
Bring it to Barr Group
Engineer-vetted. Matched to your case.
We do the vetting: conflicts checked, credentials verified, and matched to the issues you have to prove. The fee is in the expert's rate, so we are paid only if you retain.
- Free
- Confidential
- Conflicts-checked
- Paid only if you retain
Michael Barr
Barr Group carries his name. He is an electrical engineer who has been retained as an expert in U.S. District Court, ITC, and PTAB cases and in foreign courts and arbitrations, has testified before judges and juries more than two dozen times, and has seen his opinions survive Daubert challenges. His work is in two of our case studies: Toyota unintended acceleration and DirecTV satellite TV piracy.
He knows what cross-examination does to a weak expert because he has been the one in the chair.
How it works
Tell us about the case.
A short, confidential call or note. We check conflicts before anything else.
Get a matched shortlist.
Often by the next business day, each expert explained against your case and vetted by an engineer. See what your expert will do at each stage of the case.
Retain the one you choose.
The search is free and confidential for the attorney. Our fee is built into the expert's hourly rate, so we are paid only if you retain.
Deep expertise across
every technical field
We started in software and electronics. Then attorneys in other fields started calling and we found that the same rigorous methodology translated.
Software & Electronics
Our founding strength. Software expert witnesses for source code review, firmware, embedded systems, hardware design, reverse engineering, and failure analysis.
Today we support cases across a broad range of technical and scientific disciplines, with hundreds of experts under contract and thousands more in our proprietary database.
Pharmaceuticals & Life Sciences
Hatch-Waxman ANDA disputes, biosimilar litigation, formulation chemistry, bioequivalence, and FDA regulatory.
Economic Damages
Lost profits, reasonable royalties, unjust enrichment, and damages modeling with experts who communicate complex financials clearly in court.
Medical Devices
Device design and defect cases, FDA regulatory matters, software-driven medical systems, and product liability support.
Materials & Engineering
Structural failures, materials science, manufacturing defects, and industrial accident cases across mechanical and civil engineering disciplines.
What we do
From initial consultation to courtroom testimony, we support every stage of your case.
Testifying Expert Witnesses
Trial and deposition testimony from experts with deep technical credentials and proven courtroom composure.
Consulting Expert Witnesses
Non-testifying technical support, strategic case guidance, document review, and expert prep without disclosure requirements.
Source Code Review & Analysis
Independent software audits by engineers who understand what they're reading, not just running tools, but interpreting findings for legal context.
Reverse Engineering & Forensic Analysis
Hardware and software investigation, disassembly, protocol analysis, and technical reconstruction to support IP and product liability cases.
Expert Reports & Declarations
Court-ready technical documentation, clear, defensible, and prepared with cross-examination in mind from the first draft.
Why attorneys trust the search
Barr Group started as an embedded software and electronics engineering firm. For more than a decade its engineers built real products, and attorneys with patent, trade secret, and product liability cases started calling because they needed engineers who could read the technology, not a directory listing.
That engineering habit is how every candidate is still vetted, in every field.
The methodology that
works in any field
We built one of the deepest expert networks in software and electronics. Then attorneys in pharma, medical devices, and other fields started calling. Turns out rigorous vetting and deep technical prep work everywhere.
Founded by Engineers,
Not Recruiters
We have the technical background to evaluate whether an expert truly understands the technology, not just their CV. Faster onboarding, sharper opinions, and experts who hold up under cross.
Conflict-Checked Against
80,000+ Cases
Before recommending anyone, we check testimony history, prior Daubert challenges, and opposing-party engagements across USDC, ITC, PTAB, and international proceedings. No surprises at deposition.
One Point of Contact,
One Invoice
We manage the full expert relationship, scheduling, deliverables, billing, and any difficult conversations. One point of contact, one monthly invoice, no friction between you and your witness.
Trusted by attorneys
who need to win.
The arbitration went well, and your expert was a very good witness. He was great to work with and very knowledgeable in his field. We would recommend him for sure.
I've had a great experience with Barr Group in the past, and though I'm not looking for an expert witness right now, I'll be sure to keep you all in mind next time I am.
Kevin's been awesome and very thorough. Very satisfied.
What attorneys ask us
Quick answers to the most common questions
Introductions are often possible by the next business day. Tell us your deadline when you reach out.
The search is free and confidential for the attorney. Our fee is built into the expert's hourly rate, so we are paid only if you retain. You see the rate before you decide.
Yes. We support cases across pharmaceuticals, medical devices, economic damages, materials science, and more. If you're not sure whether we cover your field, reach out, we almost certainly can help or point you in the right direction.
Yes. Courtroom composure and communication are part of our vetting process. We look for experts who can explain complex technical issues clearly, not just to judges and attorneys, but to juries.
Yes. We support cases in US federal and state courts, ITC proceedings, international arbitration, and matters in other jurisdictions. Our expert network extends internationally as well.
We work with you until we get it right. If the first recommendation doesn't fit your case, we'll keep looking. Our goal is a match you're confident in, not just a quick placement.
Yes. We maintain a database of more than 80,000 cases across federal courts, ITC, PTAB, and international proceedings. Before recommending an expert, we check for prior Daubert challenges, exclusions, and opposing-party conflicts, so you're never blindsided.
We stay involved throughout. We manage scheduling, deliverables, and communication between you and your expert and also handle any issues that come up so the attorney-expert relationship stays focused on the case. Billing is simple: one monthly invoice from Barr Group covering all experts on your matter.
Tell us about your case.
Whatever the field, you get a shortlist of experts who fit it, often by the next business day. The search is free; our fee is in the expert's hourly rate, so we are paid only if you retain.