Marissa Lalli's practice focuses on intellectual property litigation and complex commercial and antitrust disputes. She represents clients in high-stakes patent infringement and licensing disputes involving a variety of technologies, including semiconductors, digital imaging, smartphones, VoIP devices, data storage systems, and automobiles, as well as disputes involving pharmaceuticals. Ms. Lalli also represents clients in trade secret, trademark, unfair competition, and antitrust matters in courts throughout the country. Ms. Lalli's practice encompasses all aspects of litigation, including pre-suit investigations, pleadings, fact and expert discovery, depositions, motion practice, settlement, trial preparation, trial and appeals. Her experience includes litigating in federal district courts and the International Trade Commission.

Outside of her work at the firm, in 2022, Ms. Lalli was seconded to the in-house intellectual property group at one of the largest technology companies in the world. As a secondee, she managed high-stakes global patent matters. A few years earlier, in 2016, Ms. Lalli served as a Special Assistant District Attorney in Middlesex County, Massachusetts, where she tried more than a dozen criminal cases to judges and juries. She has also taught Civil Litigation and Patent Trial Advocacy courses at Boston College Law School and Harvard Law School. Prior to joining WilmerHale, she was a law clerk for the Honorable Patti B. Saris of the United States District Court for the District of Massachusetts.

Ms. Lalli is committed to pro bono representation. She has achieved significant victories on behalf of individuals seeking political asylum in the United States, victims of domestic violence, and disabled veterans appealing the denial of certain disability benefits before the US Court of Appeals for Veterans Claims. She was also a key member of the litigation team in a federal class action suit challenging the imprisonment of women in Massachusetts who have been civilly committed for drug or alcohol addiction treatment.

Professional Activities

Ms. Lalli is admitted to practice before the US Court of Appeals for the First Circuit and the US District Court for the District of Massachusetts.