Karen O. Hourigan

Partner | San Francisco

Industry Experience:

Karen Hourigan is a skilled litigator with over two decades of experience focused on discovery-related issues in complex state and federal litigation.  Her practice focuses on matters concerning eDiscovery, information governance, compliance, and data privacy, and she routinely counsels clients on preservation, collection, data processing, document review, privilege claims, and production-related strategies.  Karen has represented clients in matters concerning product liability, antitrust, insurance, and environmental, and across numerous industries, including pharmaceuticals, technology, food and beverage, manufacturing, automobiles, energy, construction, transportation, and banking.  Her significant background regarding litigation readiness and litigation response plans allows Karen to develop innovative, practical, and cost-effective discovery strategies.  

Karen consistently monitors and evaluates evolving law regulations (U.S. and international) to help guide clients in relation to new business opportunities, products, and services.  In 2020, Karen received an Executive Diploma in Strategy, Development & Innovation from the University College of Dublin Smurfit Graduate Business School.  With this additional insight and understanding into the development of effective business strategies, Karen is uniquely situated to best assist organizations as they evolve in complex global business and regulatory environments.

Karen has been an integral team member for special master and expert witness engagements focused on eDiscovery and information governance.  She has also spoken and written extensively on issues and solutions related to eDiscovery.

Some of Karen’s recent work experience includes:

  • Counseling Fortune 100 clients on policy and process improvements to enhance legal and regulatory compliance and reduce litigation costs and regulatory risks
  • Negotiating scope of discovery, ESI Protocols, TAR Protocols, and defending clients in disputes related to eDiscovery and privilege challenges
  • Preparing corporate 30(b)(6) witnesses to testify regarding eDiscovery efforts and information management and retention policies and practices
  • Advising clients in pre-litigation settings on the development of enterprise-wide plans for the preservation and collection of information
  • Developing and implementing eDiscovery playbooks and related processes and procedures
  • Advising clients on developing practical and tailored information governance approaches, policies, and training, including those related to emerging technologies such as collaboration tools, communication applications and platforms, social media, file sharing and storage platforms, and mobile devices
  • Revising existing records and information management policies and schedules, as well as other policies related to acceptable use of technologies, bring your own device (BYOD), legal holds, and social media
  • Advising clients on the retention, migration, and disposal of redundant, obsolete, and trivial (ROT) data and legacy or archived data, and releasing and right-sizing preservation efforts
  • Overseeing large scale document review projects, including privilege reviews
  • Assessing the impact of data privacy and protection regulations on the development and execution of eDiscovery processes for multinational organizations
  • Developing expert witness testimony regarding state-of-the-art and best practices in eDiscovery

Before rejoining Redgrave LLP in 2021, Karen was a partner at Morgan, Lewis, & Bockius LLP.  Her previous experience has also included working with clients on information governance and eDiscovery matters as well as on litigation matters as a Partner and Of Counsel at Redgrave LLP, as a Senior Advisor at Business Intelligence Associates, as Counsel at Redgrave Daley Ragan & Wagner LLP, and as an associate at Jones Day.  Karen also served as a law clerk to Hon. Elizabeth D. Laporte (U.S. District Court for the Northern District of California) and Hon. David Warner Hagen (U.S. District Court for the District of Nevada).

Organizational Involvement & Memberships:

Karen is a member of The Sedona Conference® Working Group on Electronic Document Retention and Production (WG1), Working Group on International Electronic Information Management, Discovery and Disclosure (WG6), and Working Group on Data Security and Privacy Liability (WG11).  She is also a member of ARMA International, Association of Certified Electronic Discovery Specialists (ACEDS), and International Association of Privacy Professionals (certified (CIPP/US)).


Karen received her J.D. from Georgetown University Law Center, an Executive Diploma in Strategy, Development & Innovation, with merit, from the University College of Dublin Smurfit Graduate Business School, and her B.A. from Emory University.  She is admitted to practice in California and the District of Columbia.