• American University, B.A. (2008) cum laude
  • St. John's University School of Law, J.D. (2014) magna cum laude


  • New York
  • U.S. District Court for the Southern District of New York
  • U.S. District Court for the Eastern District of New York
  • U.S. Bankruptcy Court for the Southern District of New York
  • U.S. Court of Appeals for the Second Circuit

Mara Lieber


Mara Lieber is a counsel in Crowell & Moring’s New York office and a member of the firm’s Litigation Group. Mara has significant experience representing large and small commercial entities from pre-litigation through appeal. Understanding that not all disputes are the same, she is skilled at identifying and addressing her client’s objectives with minimal disruption.

Mara’s representation experience includes consumer class actions, commercial disputes, and complex financial matters. Mara is experienced in managing large-scale, multi-party litigations, as well as counseling smaller companies and individuals in connection with business disputes. She has experience in all procedural aspects of litigation, including venue and jurisdictional disputes, discovery, motion practice, trial/arbitration, and appeal. Prior to joining Crowell & Moring, Mara was a litigation associate at a New York law firm, where she concentrated on complex commercial, security, and bankruptcy litigation matters, as well as employment disputes.  


Admitted to practice: New York, U.S. District Courts for the S.D.N.Y. and E.D.N.Y., U.S. Bankruptcy Court for the S.D.N.Y., and U.S. Court of Appeals for the Second Circuit.

Representative Matters

  • Representing major automobile manufacturer in nationwide class action alleging vehicle performance defects, breach of warranty, fraud, and consumer protection claims.
  • Representing CSX Transportation in multidistrict litigation alleging a price-fixing conspiracy among certain providers of rail freight transportation services.
  • Represented large institutional investor in Texas litigation seeking to recover over $70 million in losses on certain project finance notes issued by a contractor of Petróleo Brasileiro, Inc. (Prior firm).
  • Represented a global financial services firm in the prosecution of hundreds of millions of dollars in indemnification claims against loan originators for the benefit of the firm’s creditors. In connection with that litigation, successfully opposed multiple motions to dismiss and transfer venue. (Prior firm).
  • Represented a subsidiary of the fourth-largest investment bank in the U.S. in prosecution of claims against major financial institutions and entities in their capacities as Trustees, Issuers, and/or Noteholders in connection with the termination of synthetic credit default obligations. (Prior firm).
  • Represented Connecticut-based contractor sued in New York court and successfully obtained dismissal of the action based on lack of personal jurisdiction. (Prior firm).

Speeches & Presentations


Client Alerts & Newsletters

Firm News & Announcements

January 3, 2022 Crowell & Moring Elects 13 New Partners, Promotes Seven to Senior Counsel, and 19 to Counsel
April 10, 2020 LITIGATION NOTE: Crowell & Moring Secures Win for Client Molson Coors’ Hard Seltzer Launch