Morgan Lewis

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Photo of  Lorraine M. Casto

practice areas

honors + affiliations

Technical Editor, Santa Clara Law Review

Recipient, Oral Advocacy Award in Moot Court

Recipient, Award for Excellence in Commercial Transactions Studies

Recipient, Yellow Belt, Legal Lean Sigma®

bar admissions

  • California

Court Admissions

  • U.S. Court of Appeals for the Federal Circuit
  • U.S. Court of Appeals for the Ninth Circuit
  • U.S. District Courts for the Northern, Southern, Eastern, and Central Districts of California
  • U.S. District Court for the District of Colorado
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Lorraine M. Casto

San Francisco
One Market, Spear Street Tower
San Francisco, CA 94105-1596
United States
Phone: +1.415.442.1216
Fax: +1.415.442.1001

Lorraine M. Casto is an associate in Morgan Lewis's eData Practice with jury and bench trial experience (state and federal), as well as international arbitration, domestic arbitration, government investigations such as FTC investigations, and appellate experience. Ms. Casto focuses her practice on complex litigation, including intellectual property litigation and developing tailored strategies and discovery management plans, with an emphasis on electronic discovery.

The eData Practice is an innovative practice founded by Morgan Lewis to address the impact of electronic data on business and legal strategies, helping clients meet increasingly demanding regulatory and legal requirements with cost-effective prelitigation risk management, eDiscovery consulting and document review.

We partner with in-house legal, IT, and records-management teams as well as outside technology vendors to apply best practices, inside and outside litigation. We offer start-to-finish litigation management, from litigation holds and data preservation, to negotiations with opposing counsel, to discovery motion practice, depositions, and trial support. We are a national team with both West Coast and East Coast capabilities.

The eData Practice plays a large role in defending clients in corporate matters, including complex commercial litigation such as intellectual property litigation, product liability, mass torts, antitrust, M&A, regulatory, white collar, compliance, construction and insurance coverage.

Ms. Casto serves on her office's Pro Bono Committee, facilitating the firm's juvenile delinquency record sealing program. She also represents clients seeking domestic violence or elder abuse restraining orders and negotiates landlord-tenant disputes, among various other pro bono matters.

Prior to attending law school, Ms. Casto worked as a senior IP paralegal at a large multinational law firm, as well as at a large multinational corporation in its IP law department.

Ms. Casto earned her J.D. from Santa Clara University School of Law, where she was a technical editor for the Santa Clara Law Review and where she won awards for oral advocacy in Moot Court and for excellence in commercial transactions studies. While in law school, Ms. Casto served as a judicial extern to Judge Patricia V. Trumbull of the District Court for the Northern District of California and, upon graduating from law school, Ms. Casto returned to Judge Trumbull as her judicial clerk. Ms. Casto earned her B.A., magna cum laude, in economics from San José State University.

Ms. Casto is admitted to practice in California and before the U.S. Court of Appeals for the Federal Circuit; the U.S. Court of Appeals for the Ninth Circuit; the U.S. District Courts for the Northern, Southern, Eastern, and Central Districts of California; and the U.S. District Court for the District of Colorado.


  • Santa Clara University School of Law, 2005, J.D.
  • San José State University, 2002, B.A., Magna Cum Laude