Diane P. Sullivan


Practice Area: Litigation

    All Star


    “Ms. Sullivan is a litigation leader.”
    “Ms. Sullivan takes a very aggressive approach and typically wins for us.”


    Ms. Sullivan is a nationally recognized trial attorney. In 2012, The American Lawyer featured her in its “Litigator of the Year” edition, noting that she “isn’t a hired gun; she’s more like a hired bazooka repeatedly parachuting into high-stakes cases leading up to trial and securing victories.” In three different years, 2007, 2017 and 2019, The National Law Journal featured jury verdict wins by Ms. Sullivan in its annual series: “Winning: Successful Strategies from the Nation’s Top Litigators” which highlights significant trial wins by the nation’s top trial lawyers. The same publication highlighted her jury verdicts as among the “Top Verdicts of the Year” in seven different years. In 2017, she was one of 19 attorneys in the country named a “Lawdragon Legend” for being recognized as one of the 500 Leading Lawyers in America for ten years or more. Lawdragon noted “she has produced a batting average in jury trials in the Hall of Fame category” and described her as “one of the most feared trial lawyers in the nation.” The publication further stated: “In courts or arbitrations for corporate clients, she is as good as any advocate in the country.” She was named one of Law360’s 2015 “Trial Aces” in its inaugural list recognizing the top trial attorneys in the country based on success in high-stakes trials, and as one of Law360’s 2016 Trial “MVPs” in the publication’s inaugural ranking of the five most valuable trial lawyers in the country based on significant trial victories. In 2018, Benchmark Litigation described her as “one of the nation’s most iconic trial lawyers” and in 2019 she received the prestigious Benchmark Litigation “Hall of Fame” award and is listed on Benchmark’s 2020 and 2021 Top 100 Trial Lawyers list.

    Visit All Star's Firm »