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What is a Claim Chart?

A claim chart is a visual representation of evidence showing how each claim limitation has been implemented by an infringing product or service. While formatting can vary, at a minimum a claim chart lists all relevant claim limitations in one column, and provides evidence (such as screenshots or text from product marketing material, developer documentation, FAQs, videos, network tests and/or photographs of the product or teardowns of the product) in another column against each of the claim limitations.

Great claim charts, such as those made by Copperpod, also provide detailed analyst comments explaining how the evidence shows that the charted product or service implements the claim limitation, and annotations highlighting the most important portions of the cited evidence.

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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 has helped plaintiff attorneys prepare detailed infringement contentions and evidence of use Claim Charts on over 100 patent litigation matters. We understand the burden of proof our clients must satisfy - and work hard to make sure that our claim charts are not only thorough, on time but also explain technical concepts fully through easy-to-understand expert comments.​

Whether it is multimedia delivery networks, consumer electronics or medical devices, our experts bring the right expertise and the right resources to unearth key evidence to form the best infringement theory. We work with clients throughout the case so that our Evidence of Use reports, Claim Charts and Infringement Contentions consistently align with the case facts to achieve success.

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Indirect Patent Infringement

What is it and how to prove it?

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

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Patent Infringement Analysis: Copperpod's claim charts enable enforcement of Industrial Internet of Things (IIoT) patents by Houston entrepreneur.


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

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