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Bamboo Leaves


What is Evidence of Use (EoU)?​

While working on large portfolios, the best and most efficient way forward is generating one or more Evidence of Use (EoU) reports. EoUs provide a visual representation of evidence showing how patented technology has been implemented by an infringing product or service, based on screenshots or text from product marketing material, developer documentation, FAQs, videos, network tests and/or photographs of the product or teardowns of the product.


Evidence of Use (EoU) claim charts are an essential artifact during any patent licensing or enforcement campaign, as it articulates the infringement theory in an easy to understand and difficult to refute format. Moreover, claim charts may evolve throughout a campaign, as new evidence is discovered during fact discovery, and the infringement positions become consolidated pre-trial.


Copperpod analyzes technology products to identify key evidence of patent infringement. Our EoU reports help attorneys articulate, evaluate and negotiate patent infringement disputes - and form the basis for the overall patent monetization campaign for the client.

Whether it is enterprise software, consumer electronics or medical devices, our experts bring the right expertise and the right resources to unearth key evidence to form the best patent infringement theory. We work with clients throughout the case so that our evidence of use reports, claim charts and patent infringement contentions consistently align with the case facts.

Data Processing

Indirect Patent Infringement

What is it and how to prove it?


Patent Infringement Analysis: Copperpod helps patent owner enforce firmware generation patent against 35 System-On-Chip (SoC) Manufacturers.

Computer Processor
Justice Scale

When Do Claim Charts Do More Harm Than Good For Patent Litigation and Licensing?

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