What clients say about Insight:

Below are excerpts of unsolicited feedback from our clients.

“DeForest was the first person I called. And he and his team did not disappoint. They were somehow able to review countless deposition transcripts and exhibits and tens of thousands of documents/Excel spreadsheets in short order, and quickly and correctly figure out the nuances of the pharmaceutical marketplace and the economic theories in short order. It was impressive.”

Law Firm Partner, Chicago

“Just wanted you to know that the Patent Board ruled for us and specifically credited your testimony. Thanks for everything!”

Law Firm Partner, Washington DC

“I was pleasantly surprised with your citations to case law many of which were spot on, and generally not what one would expect from a pair of economists.”

Law Firm Associate, Boston

“… Thanks for the draft report. 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

“Thank you again for your time, patience and efforts this past week preparing for the deposition. We appreciate how well-prepared, responsive and focused you were throughout the process. It went well, as expected.”

Law Firm Partner, Chicago

“It is the quality of your expert reports and your deposition efforts v. their positions that led them to [drop the issue]. Thank you and your team for all your efforts and for winning your part without having to actually take the ball and head to the mound.”

Law Firm Partner, Washington D.C.

“… the Supreme Court turned down Acorda’s cert petition yesterday, finally bringing our victory to a close.  Congrats on helping to solidify this law!”

Law Firm Partner, Chicago

“It was a pleasure working with you. Your skill as an expert and a witness helped us present a strong case, which led to this settlement.”

Law Firm Associate, Chicago

“You’re definitely on the top of our list of experts for cases like these.”

Law Firm Partner, New York

“The parties have reached a settlement and are working out the agreement (your report must have scared them!).”

Law Firm Partner, Silicon Valley

“That was the best explanation of commercial success I’ve ever seen.”

Law Firm Partner, Washington DC

“We’ve gotten such good feedback about you and your team from our colleagues in the last few days that we’d like to save you the trip and set up a call to move forward.”

Law Firm Partner, Washington DC

“I can’t tell you enough how we have appreciated ALL of your help in our matter.”

Client, Los Angeles

“Once again, thank you for your patience, flexibility, and, most importantly, excellent work in putting together the report in this case. As I mentioned, we think it is excellent work.”

Law Firm Partner, Dallas

“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

“We settled on Friday. It was a long day but the client is happy. Thank you both for the help, it was just what we needed!”

Law Firm Associate, Los Angeles

“I just wanted to add I enjoyed working with you. Though the settlement is great for the client, I’ll miss doing trial together.”

Law Firm Partner, San Diego

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

Law Firm Partner, Silicon Valley

“Thank you for being an amazing resource throughout this case—we look forward to working with you again in the future!”

Law Firm Associate, San Francisco

“It’s always a pleasure working with you and will definitely work together in the future.”

Law Firm Partner, Houston

“I want to thank you both for your amazing work in this matter.”

Law Firm Partner, Silicon Valley

“You guys stepped up for me at a time of need”

Client, Los Angeles

“You guys are the best, thanks!”

Law Firm Associate, Chicago

“Thanks for your work on the case. Your analysis and report are really good.”

Law Firm Partner, New York

“Thanks for your work. We got a great resolution!”

In-house counsel, North Carolina

“Thank you for all of your help. You did a great job before and during the trial. We’ll be talking.”

Law Firm Partner, Boston

This is an excellent report. Thank you for the great work…We are in a strong position here!

Law Firm, Utah

What courts say about Insight:

Below are excerpts from judicial opinions referencing our work.

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


“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…”


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

District of New Jersey

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

Federal Circuit

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


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

Federal Circuit

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

Northern District of California

“[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 as best…”

District Court of New Jersey

“We are persuaded, rather, by Petitioner’s arguments that the blocking patent would have deterred others…”


“Accordingly, we determine that Petitioner presents sufficient evidence to rebut the presumption of nexus between the commercial success… and the claimed method.”


“Having considered the arguments and evidence…, we agree with Petitioner that Patent Owner has not met its burden of…[showing] commercial success.”


IAM Patent 1000 – Top Experts

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.” Though a relatively young firm, Insight Economics packs a punch, thanks to the deep expertise of its testifiers and their commitment to providing top-notch client care.”

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.”

Philip Kline “immediately understands our questions and maps out efficient ways to find the answers. He is a rising star who is extremely knowledgeable, hardworking, responsive and totally on top of the details – he is quick to get into the specifics and understands the larger context as well as the finer points.”

Ryan Penkowsi is “one of the best economic analysts and researchers out there. He possesses a deep knowledge of the relevant case law and is very thorough in his damages analysis. Ryan is particularly good at explaining complex economic principles to a lay audience.”