When you’re navigating patent enforcement, ambiguity is not an option. You need precise, defensible evidence—and that’s exactly where Evidence of Use (EoU) charts come into play.

An EoU chart serves as a structured proof document that illustrates how each patented claim corresponds to real-world product functionality, thereby bridging legal language and technical implementation. In the document, each claim is bifurcated into its core components and aligned with concrete, verifiable product evidence.

At Ingenious e-Brain, we draft Rule 11-compliant EoU charts to support litigation, licensing, and commercial negotiations. Our approach transforms complex legal claims into clear technical mappings supported by credible product-side documentation, enabling confident decision-making and enforcement.

Inside Our Evidence of Use Chart Preparation Methodology

Step 1: Understand the Patent

Breaking down the patent’s claims, file history, and core inventive elements to define the precise scope of protection. This ensures every inference and comparison is rooted in legal and technical accuracy.

Step 2: Identify Potential Infringers

anning the market landscape, technologies, and competitors to shortlist products most likely to practice the patent. The focus remains on real, high-probability infringement targets, but not speculative matches.

Step 3: Analyze the Accused Product/Technology

Conducting a deep investigation using product manuals, technology evaluation, teardown data, and product behavior. Each feature is examined at a component or process level to identify claim-relevant functionality.

Step 4: Compare Claim Elements to Product Features

Evaluation of every claim element against product evidence to check literal or functional alignment. Only elements backed by verifiable proof move forward—strengthening the infringement narrative.

Step 5: Prepare an Evidence of Use (EoU) Mapping & Evidence Visualization

Mapping claim elements to product features with precise citations and visual references for clarity and defensibility to draft color-coded, structured charts that are presentable in legal proceedings, making overlaps obvious.

What Sets Us Apart?

Deep Cross-Domain Expertise
Deep Cross-Domain Expertise

Multidisciplinary IP experts and law professionals across electronics, ICT, mechanical, chemicals, biotech, pharma, and life sciences domains

Advanced Technical & Standards Capability
Advanced Technical & Standards Capability

Proven experience in decoding complex source code, telecom protocols, wireless standards, and high-tech system architectures

Evidence-first Approach
Evidence-first Approach

Authentic, traceable, and verifiable evidence—cross-checked at every stage to ensure legal defensibility and technical accuracy

AI-augmented Human Insights
AI-augmented Human Insights

AI-driven clustering for initial result screening that blends advanced machine intelligence with expert human insight for tailored, precise research outcomes

Rule-11 Compliant, Court-Ready Deliverables
Rule-11 Compliant, Court-Ready Deliverables

Crisp, structured, and color-coded litigation-ready Evidence of Use charts built to withstand legal scrutiny and support strong enforcement narratives

Rigorous Search & Validation Framework
Rigorous Search & Validation Framework

A thorough research approach is followed to evaluate claims, products, and technology footprints with precision—no assumptions, no gaps

Competitive & Customized Pricing Models
Competitive & Customized Pricing Models

Custom delivery timelines, reporting formats, and pricing structures aligned to project needs, budget considerations, and strategic priorities

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Domain Expertise

Our services are designed to support enterprises within the below mentioned industries and sectors, helping them achieve their strategic goals.

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