EDRM Process: The Standard Framework for US Litigation Support

In today's digital age, virtually every legal dispute involves electronically stored information (ESI) — emails, documents, databases, social media posts, text messages, and more. The challenge of finding, preserving, and producing this digital evidence has spawned an entire industry around e-Discovery.

At the heart of e-Discovery lies the Electronic Discovery Reference Model (EDRM) — the de facto industry standard framework that guides legal teams through the complex process of managing ESI in litigation, investigations, and regulatory matters.

What is the EDRM?

The Electronic Discovery Reference Model was developed in 2005 to create a common framework and language for e-Discovery practices. It's now maintained by the Duke Law School Bolch Judicial Institute and provides:

• A visual roadmap of the e-Discovery process
• Standardized terminology across the industry
• Best practices at each stage
• A framework for defensible processes in court
• Foundation for technology and service providers

EDRM by the Numbers

The 9 Stages of EDRM

The EDRM consists of nine interconnected stages that flow from left to right — though in practice, the process is often iterative rather than linear.

Stage 1: Information Governance

The foundation of effective e-Discovery — proactive management of information to reduce risk and cost when litigation arises.

• Data retention and destruction policies
• Records management programs
• Information mapping and inventory
• Defensible deletion practices
• Privacy and security controls

Stage 2: Identification

Once litigation is reasonably anticipated, identify potentially relevant ESI sources.

• Interview custodians (key personnel)
• Map data sources (email, file shares, cloud, mobile)
• Identify third-party data (cloud providers, partners)
• Document the identification process
• Assess data volumes and complexity

Stage 3: Preservation

Take steps to prevent destruction, alteration, or loss of potentially relevant ESI.

• Issue legal hold notices to custodians
• Suspend auto-deletion policies
• Preserve in-place or collect for safeguarding
• Maintain hold acknowledgments and reminders
• Document chain of custody from inception

Stage 4: Collection

Gather ESI from identified sources in a forensically sound manner.

• Use defensible collection methods
• Preserve metadata and original file structure
• Maintain chain of custody documentation
• Collect from email servers, file systems, cloud, mobile devices
• Use forensic imaging for critical sources
• Hash files for integrity verification

Stage 5: Processing

Prepare collected ESI for review by reducing volume and converting to reviewable formats.

• De-duplication: Remove identical copies
• De-NISTing: Remove system files
• Email threading: Group conversation chains
• OCR (Optical Character Recognition): Make images searchable
• Date range filtering: Narrow to relevant timeframes
• Keyword filtering: Initial relevance screening

Stage 6: Review

The most expensive and time-consuming stage — attorneys review documents for relevance, privilege, and confidentiality.

• Relevance review: Documents responsive to discovery requests
• Privilege review: Attorney-client and work product protections
• Confidentiality review: Trade secrets, PII, HIPAA-protected info
• Issue coding: Categorize by case themes
• Technology-Assisted Review (TAR): ML-powered prioritization
• Quality control: Validation samples and audits

Stage 7: Analysis

Analyze ESI to understand facts, identify key documents, and develop case strategy.

• Timeline analysis of events
• Communication pattern mapping
• Concept clustering and visualization
• Custodian network analysis
• Predictive coding insights

Stage 8: Production

Deliver responsive, non-privileged ESI to requesting parties in the agreed format.

• Apply Bates numbering for tracking
• Redact privileged or confidential content
• Produce in native, TIFF, or PDF formats
• Include metadata as agreed
• Generate privilege log for withheld documents
• Document production protocols (ESI Order)

Stage 9: Presentation

Use ESI effectively at depositions, hearings, mediation, and trial.

• Trial presentation software (Trial Director, Sanction)
• Document call-outs and annotations
• Exhibit creation and witness binders
• Real-time courtroom display
• Jury presentations and demonstratives

Federal Rules Governing e-Discovery

e-Discovery in US federal courts is governed by the Federal Rules of Civil Procedure (FRCP):

• Rule 26: Duty to disclose, including ESI
• Rule 26(f): Meet and confer requirements
• Rule 33: Interrogatories regarding ESI
• Rule 34: Production of ESI
• Rule 37(e): Sanctions for failure to preserve ESI
• Rule 45: Subpoenas for ESI from non-parties

The Proportionality Principle

Modern e-Discovery emphasizes proportionality — discovery efforts must be proportional to the case's importance and stakes:

• Amount in controversy
• Parties' resources
• Importance of issues at stake
• Importance of discovery in resolving issues
• Burden and cost vs. likely benefit

Leading e-Discovery Platforms

Major platforms used across the EDRM lifecycle:

• Relativity / RelativityOne: Industry leader for review and analysis
• Nuix: Powerful processing and investigation
• Reveal: AI-powered review platform
• DISCO: Cloud-native e-Discovery
• Everlaw: Modern collaborative platform
• OpenText (formerly Recommind, Axcelerate): Enterprise solutions
• Logikcull: Self-service e-Discovery

Common e-Discovery Challenges

Data Volume Explosion

Average cases now involve millions of documents. Effective scoping, culling, and TAR are essential to manage costs.

Modern Data Types

Slack, Microsoft Teams, mobile apps, IoT devices, and cloud platforms create new ESI challenges. Each requires specialized collection approaches.

Cross-Border Issues

GDPR, PIPEDA, and other privacy laws restrict cross-border data transfers. International cases require careful planning.

Privilege Protection

Inadvertent privilege disclosure is a major risk. Use clawback agreements (FRE 502(d)) and robust privilege review protocols.

Cost Management

e-Discovery typically represents 50-90% of litigation costs. Early case assessment and proportionality are key.

EDRM Best Practices

• Start with Information Governance — proactive beats reactive
• Issue legal holds quickly and document delivery/acknowledgment
• Use defensible collection methods — forensic when needed
• Embrace TAR and AI tools for large reviews
• Meet and confer early — agree on ESI protocols upfront
• Document everything — defensibility matters

The Future of e-Discovery

Generative AI in Review

GenAI is transforming document review — summarization, key fact extraction, privilege identification, and translation are becoming AI-augmented.

Cloud Collection

As data moves to cloud platforms (M365, Google Workspace), API-based collection is replacing traditional forensic imaging.

Cross-Platform Communications

Modern collaboration tools (Slack, Teams, Zoom) require specialized collection and review approaches that traditional EDRM didn't contemplate.

Privacy-Aware Discovery

Balancing discovery obligations with privacy laws (GDPR, CCPA) is increasingly complex — requiring built-in privacy controls.

Conclusion

The EDRM remains the foundational framework for e-Discovery — but the underlying technologies, data types, and legal requirements continue to evolve rapidly. Success in modern litigation requires not just understanding the EDRM stages, but knowing how to apply them with cutting-edge tools and proportional strategies.

Whether you're a law firm partner, in-house counsel, paralegal, or e-Discovery service provider, mastering the EDRM is essential. The framework provides the defensibility, repeatability, and standardization needed to handle the complex realities of digital evidence in 21st-century legal practice.