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.

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.​

Claim Chart

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.


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

Based on an analysis of 200+ cases spanning the last decade, this article provides instances when their claim charts actually do more harm than good in forming, advocating and ultimately proving the patent infringement position in the case.

Why is Copperpod IP the Best Patent Research Firm?

Copperpod IP team works with leading patent attorneys across the United States, Europe, and Japan to power patent licensing and litigation, with technology research and analytics. Our analysts have driven revenues of more than $2 billion for clients through patent licensing, jury verdicts, and patent portfolio transactions.

Indirect Patent Infringement: What is it and how to prove it?

Receiving a patent does not automatically provide patent holders with security against patent infringement of the patent. When a patent holder feels that their innovation is vulnerable, they must take necessary measures to protect their invention from exploitation. This includes the patent holder proceeding for a patent infringement litigation.

Can You Sue The Government For Patent Infringement?

A patent is a contract between the patent owner and the government that gives the patent owner the legal right to exclude others from making, using, selling and importing an invention for a limited period of years, in exchange for publishing an enabling public disclosure of the invention. But what happens when the infringer is the government itself?