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Leonid Grinberg

Leonid Grinberg’s practice focuses on complex civil litigation, appellate litigation, intellectual property litigation, and white collar matters.

Prior to joining MoloLamken, Mr. Grinberg clerked for the Honorable Frederic Block of the United States District Court for the Eastern District of New York.

Previously, he worked as a legal intern at the Securities and Exchange Commission in Commissioner Stein’s office, as a legal extern for the United States Attorney’s Office in the Eastern District of New York, and as a legal intern at the Criminal Division of the Department of Justice in Washington, D.C.

Mr. Grinberg holds an S.B. in Computer Science and Engineering from the Massachusetts Institute of Technology. Before attending law school, he worked as a software engineer for a large media company in New York, NY.

Mr. Grinberg is fluent in Russian.

Representative Matters

  • American Indian nation pursuing state-law claims against e-cigarette manufacturers, distributors, and retailers.
  • Technology company appealing adverse lower-court orders in the Federal Circuit.
  • Advertisers pursuing class action claims against a major social media company.
  • Technology company pursuing patent infringement claims.
  • Financial institutions pursuing residential mortgage-backed securities “putback” suits against securitization sponsors.

  • A foreign-owned gas utility defending against an arbitration enforcement action in a federal court of appeals.

  • A Fortune 50 company as amicus curiae at the merits stage in the United States Supreme Court, addressing the application of copyright’s fair use doctrine to computer software.

  • Two law professors as amici curiae at the certiorari stage in the United States Supreme Court, arguing for a reexamination of the “plain view” exception.

  • An incarcerated individual pursuing section 1983 claims against a municipality and other responsible individuals.



  • Law clerk to the Honorable Frederic Block, United States District Court for the Eastern District of New York


New York University School of Law, J.D.

Editor-in-Chief, NYU Annual Survey of American Law

Semifinalist, 2018 Orison S. Marden Moot Competition

Intake Volunteer, Manhattan Legal Services

Massachusetts Institute of Technology, S.B.

Karl Taylor Compton Prize 

Kelly-Douglas Essay Contest, First-place essay

Corporation Joint Advisory Committee

Bar and Court Admissions

  • New York
  • Massachusetts
  • United States Courts of Appeal for the 2nd and Federal Circuits
  • United States District Courts for the Eastern and Southern Districts of New York
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