Impact

What clients say about Insight:

Below are excerpts of unsolicited feedback from our clients.

“You have an impressive command of the record and you were, simply put, excellent on the stand.”

Law Firm Partner, Washington DC

“I was impressed with the degree to which you dug into the facts, the detailed factual citations, and the clear writing.”

Law Firm Associate, Boston

“We appreciate how well-prepared, responsive and focused you were throughout the process. It went well, as expected.”

Law Firm Partner, Chicago

“It has truly been a pleasure working with you. You know what you’re doing, plus you’re good people who are pleasant to work with. A hat trick!”

Law Firm Partner, Silicon Valley

“DeForest performed flawlessly at deposition with little preparation.”

Law Firm Partner, Chicago

“Thanks again to you and your team for your excellent work. Looking forward to the next one!”

Law Firm Partner, Silicon Valley

“DeForest was the first person I called. And he and his team did not disappoint.”

Law Firm Partner, Chicago

“Just a note to say what a pleasure it was to work with [DeForest] and Ryan. Your analysis was spot on and your team’s efficiency made our lives a lot easier when we had dozens of balls in the air.”

Law Firm Partner, Wisconsin

“DeForest McDuff and his team at Insight are without question one of the “go to” consultants I turn to when I have a critical case.”

Law Firm Partner, Chicago

“You’re a rockster— Thank you SO MUCH for all of your hard and great work and flexibility.”

Law Firm Counsel, Miami

“Clean sweep – huge thanks to you and your team for helping us get there!”

Law Firm Partner, Silicon Valley

“We thank you and your team for stepping up to turn around such a high level of work product in such a short time frame.”

Law Firm Associate, New Jersey

What courts say about Insight:

Below are excerpts from judicial opinions referencing our work.

“[Party] has demonstrated irreparable injury… Loss of goodwill and market share destroys [Party’s] relationships with its end-use customers that have been developed over decades…”

US Court of International Trade

“The Court notes… that [defendant] has made a substantial showing that the nexus between the commercial success and the [patent] is tenuous at best… ”

District Court of New Jersey

“Dr. McDuff testifies that Patent Owner’s asserted evidence… does not represent a strong case… Again, we credit Dr. McDuff’s opinions… ”

USPTO PTAB

“The Board found that [Party’s] commercial success evidence was ultimately “weak”… We reject [Party’s] challenge to the Board’s reasoning… ”

Federal Circuit

“At the outset, … [Party] does not challenge Dr. McDuff’s qualifications, which the Court finds are substantial.”

Central District of California

“…we do not agree that the [claimed benefits]… are attributable to the claimed method… we credit Dr. McDuff’s opinions, which stand unrebutted…”

USPTO PTAB

“In addition, the Court found Dr. McDuff’s testimony persuasive with respect to the “lack of nexus”…”

District of New Jersey

“We credit Dr. McDuff’s testimony and find… that Patent Owner’s insulin glargine patents may have precluded others from entering the market…”

USPTO PTAB

“…Dr. McDuff’s conclusions stem from his expertise in economic markets.”

Northern District of California

“The defendants offered unrebutted testimony from an expert in economics and pharmaceuticals…”

Federal Circuit

IAM Patent 1000 – Top Experts of 2025

The IAM Patent 1000 is the most definitive directory dedicated to identifying the world’s leading patent service providers – a distinction achieved through a rigorous and far-reaching research process that gathers feedback from over 6,000 clients worldwide.

From IAM: “The team at Insight Economics are excellent communicators and highly responsive; they have the ability to handle complex issues and come up with creative solutions. Insight has solidified its position as a leading economic consulting firm. Its experienced professionals with substantial testifying experience offer a solid range of expertise. Insight consultants aim for economic clarity and reasoning for the betterment of our courtrooms, boardrooms, and broader society.”

DeForest McDuff “garners praise for being a fantastic testifier who is exceedingly skilled and whip smart… He really digs in to present credible, cogent analysis that moves the needle. He is knowledgeable about patent economic issues and is very creative and thoughtful in his approach to developing opinions in cases.”

Ryan Penkowski is “one of the best economic analysts and researchers out there. He enhances the team with his keen work ethic and exceptional talent. He possesses a profound understanding of the commercial and legal intricacies of deals, and he eagerly explores innovative and non-obvious solutions. Ryan is particularly good at explaining complex economic principles to a lay audience.”
Read more about Insight Economics at the IAM Patent 1000

IAM Strategy 300 – The World’s Leading IP Strategists 2025

The IAM Strategy 300 is a guide to pioneers in the IP Industry. It focuses exclusively on patent practitioners and has firmly established itself as the definitive resource for professionals seeking world-class legal patent expertise. It acknowledges those who innovatively create and implement strategies that amplify the worth of IP portfolios. 

 From IAM : “With over 175 expert reports and extensive courtroom experience, DeForest McDuff is recognized for his expertise in damages, intellectual property, and antitrust matters. His extensive experience provides invaluable insights across various sectors, including pharmaceuticals and electronics.”

Pro Bono Expert Services

At Insight Economics, we are committed to making a difference by providing pro bono expert analysis and expert witness support, ensuring legal teams have the critical insights they need to advocate for their clients.

We support the Pro Bono Institute’s ExpertConnect Pro Bono Hub, a pilot program designed to connect pro bono and public interest legal teams with expert services.
Find out more about the Pro Bono Institute’s ExpertConnect Pro Bono Hub .