Patent Infringement Analysis & EoU Charting

Service Overview

Patent infringement analysis and Evidence of Use (EoU) charting are the cornerstone of any patent monetization, licensing, or enforcement program. A rigorous EoU chart demonstrates how each element of a patent claim reads onto a competitor's product or process — creating the evidentiary foundation for licensing negotiations, cease-and-desist letters, and litigation. PatseanIP has prepared over 15,000 infringement analyses and EoU charts for patent owners, licensing programs, and litigation counsel worldwide.

Our process goes beyond superficial comparison. We conduct reverse-engineering-level research — analyzing product datasheets, technical manuals, regulatory filings, source code disclosures, and expert presentations — to build airtight element-by-element charts. Where literal infringement is not straightforward, our team analyzes doctrine-of-equivalents positions and argues function/way/result equivalence with precision and legal rigor.

The quality of an EoU chart directly determines the strength of a licensing position or litigation strategy. PatseanIP's charts are prepared by technically trained researchers supervised by experienced IP professionals who understand what courts and PTAB decision-makers look for. Our clients consistently report higher licensing success rates and stronger litigation positions when they bring our research-backed analysis to the negotiation table.

Key Benefits

• Element-by-element claim mapping

• Supports licensing and enforcement actions

• Strengthens litigation positions

• Covers literal and doctrine-of-equivalents analysis

What You Get

Element-by-element claim chart(s) for each asserted claim

Evidence citations with source documentation

Doctrine of equivalents analysis where applicable

Product/service technical research and findings

Visual diagrams and annotations from product documentation

Executive summary for licensing or litigation use

Our Process