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Mary J. Hildebrand




Chair, Privacy & Cybersecurity Group

Lowenstein Sandler LLP


For more than 30 years, Mary has drawn on her deep experience in privacy and data security, tech, and intellectual property to handle sophisticated technology deals from concept to conclusion.

Mary regularly serves as lead counsel to both public and private companies in complex commercial matters involving:

  • Digital and social media
  • Software
  • Clean tech
  • Renewable energy
  • Public utilities
  • Financial services
  • Medical devices
  • Entertainment
  • E-commerce
  • Transportation
  • Universities
  • Not-for-profit organizations 

Additionally, she counsels startups on the transactions and foundational legal structures needed to launch their businesses.

As a leading intellectual property lawyer, Mary has achieved an enviable track record in commercializing, protecting, and managing intellectual property, technology, and database assets around the world. She is also a recognized authority on EU and U.S. data privacy and information security laws, including the California Consumer Privacy Act (CCPA) and the General Data Protection Regulation (GDPR).

A highly regarded “top-notch,” “hugely responsive,” and “skilled, bright and knowledgeable” practitioner, Mary has been consistently recognized by Chambers USA (2009-2019) for her successful handling of complex transactions involving significant IP assets. Her clients commend her as “a phenomenal client manager” who gives “useful, pragmatic, practical advice.”

Mary has served as a member of Lowenstein Sandler’s board of directors and Strategic Planning Committee, as well as chair of the firm’s Diversity and Inclusion Committee.

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