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Prior results do not guarantee a similar outcome. Each case is unique and depends on its own facts.
About Margaret Donovan
Margaret joined Koskoff after serving as an Assistant United States Attorney for the United States Attorney's Office, District of Connecticut. She has also served as a lawyer in the United States Army JAG Corps. With an even-keeled and consistent perspective on complex legal issues, she brings a commitment to accountability in her pursuit of justice. She joined Koskoff in 2024 in support of the firm's growing firearms litigation practice and other malpractice areas.
Throughout 2025 and 2026, Margaret, along with Chris Mattei, has led national litigation on behalf of federal law enforcement and national security officials who have been unconstitutionally purged from federal service. She currently represents current and former government officials and other individuals who have been unlawfully targeted by the government. During her tenure as a federal prosecutor, her cases focused on firearms prosecutions, domestic terrorism, and violent crime. She has tried numerous federal criminal trials to verdict and has briefed and argued multiple cases before the Second Circuit Court of Appeals.
Before joining the Department of Justice, Margaret was a Captain in the Army, serving in the 101st Airborne Division and 5th Special Forces Group. As a JAG officer, she spent significant time overseas, deploying to Iraq and Syria, advising on disaster relief operations in Liberia, and being stationed over a year on the Korean peninsula. She served on two combat deployments and is a Bronze Star recipient for meritorious service. Margaret has taught repeat courses at Yale Law School on federal prosecution and on the Russo-Ukrainian War as a Visiting Lecturer in Law.
She is currently a coordinating attorney with Yale Law School's Peter Gruber Rule of Law Clinic. Margaret is often called on by major media outlets like CNN, MSNOW, ABC News, and NewsNation, to provide legal commentary concerning the rule of law, government overreach, the law of armed conflict, and federal criminal justice. Her work is frequently featured in national publications, including The New York Times, The Wall Street Journal, The Washington Post, and Bloomberg News.
Proven verdicts and settlements at Koskoff Koskoff & Bieder, P.C.
These results are credited to Koskoff Koskoff & Bieder, P.C.. A result appears under an attorney's own name only when a published source names them as counsel on the case.
On December 14, 2012, a 20-year-old gunman used a Bushmaster XM15-E2S rifle made by Remington to kill 20 first graders and six educators at Sandy Hook Elementary School in Newtown, Connecticut. Nine of the victims' families sued Remington in 2014, arguing that its marketing of the AR-15-style rifle to young, violence-prone men was an unfair trade practice that fell outside the federal immunity gun makers enjoy. The Connecticut Supreme Court let that claim proceed in 2019, the U.S. Supreme Court declined to intervene, and after Remington went through bankruptcy twice its four insurers agreed on February 15, 2022 to pay the families the full $73 million available under five policies. Remington also had to release thousands of pages of internal marketing documents.
A Waterbury jury awarded Dominic and Cathy D'Attilo and their son Daniel $58.6 million after finding that obstetrician Richard Viscarello delayed a necessary cesarean section during Daniel's birth, depriving him of oxygen and leaving him with severe cerebral palsy.
A federal jury awarded Cara Munn $41.7 million after she contracted tick-borne encephalitis on a school-sponsored trip to China and lost the ability to speak, and the Connecticut Supreme Court later held that schools can owe students a duty to warn about and protect against insect-borne disease on trips abroad.
E.M. was a boarding student at the Yeshiva of New Haven from 2001 to 2005, and from age 14 to 17 the school's rabbi and chief administrator, Daniel Greer, sexually abused him on a frequent, sometimes weekly basis. In May 2017 a federal jury in Connecticut awarded E.M. $15 million against Greer and the school, and on June 6, 2017 the court entered a $21,749,041.10 judgment after adding $5 million in punitive damages and $1.75 million in offer-of-compromise interest. The Second Circuit affirmed in full on March 3, 2020, rejecting the argument that the award was excessive. Greer was separately convicted and sent to prison; by 2021 less than $240,000 of the judgment had been collected, and E.M.'s collection suits against Greer's real-estate nonprofits were resolved privately in 2024.
A New Haven jury awarded the estate of Maria Ocasio $15.4 million after finding that an anesthesiologist and nurse anesthetist from Meriden-Wallingford Anesthesia Group failed to recognize and respond to her respiratory collapse during a routine outpatient endoscopy, leading to her death.
Prior results do not guarantee a similar outcome. Each case is unique and depends on its own facts.
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Prior results do not guarantee a similar outcome. Each case is unique and depends on its own facts.






