EoU Claim Chart

Suspecting that a competitor has stolen your patented technology is incredibly frustrating. However, in the eyes of the law, simply pointing at a rival product and saying "it looks the same" is not enough to win a lawsuit or demand royalty payments. You must prove exactly how their product violates your specific legal rights.

To turn your suspicions into actionable legal proof, you need a highly structured, technical document known as an Evidence of Use (EoU) Claim Chart. This document is the ultimate weapon for enforcing your intellectual property rights and forcing infringers to the negotiating table.

What is an EoU Claim Chart?

A patent is essentially a list of specific, numbered "claims" that define the exact boundaries of your invention. An EoU Claim Chart takes those complex legal claims and maps them directly, side-by-side, to the physical or software features of the infringing product.

We break down your granted patent claim into individual elements (Step A, Step B, Step C). Next to each element, we place undeniable proof showing that the competitor's product performs that exact same step. This evidence is usually gathered through reverse engineering, product teardowns, software analysis, or digging through their public user manuals.

The Strategic Power of a Claim Chart

Having a professionally drafted claim chart completely changes the power dynamic between you and a competitor. It is used for three major commercial strategies:

• Sending Cease and Desist Letters: Sending a generic warning letter is often ignored. Attaching a detailed EoU chart proves you have done the technical homework and are fully prepared for a lawsuit, which usually forces the competitor to immediately stop production.
• Driving Licensing Revenue: If a massive company is already using your technology, taking them to court can be expensive. Instead, we use the claim chart as leverage to force them into a highly profitable patent licensing agreement, turning an infringer into a paying customer.
• Defending Against Attacks: If someone accuses your business of infringement, we can build a reverse claim chart. We meticulously show exactly where your product differs from their patent, proving your innocence and protecting your market share.

Our 5-Step Methodology for Undeniable Proof

Creating this document requires a rare combination of legal expertise and deep engineering knowledge. At M&P IP Protectors, our technical team follows a strict, five-step methodology to build undeniable evidence:

• Understand the Patent: We start by thoroughly reviewing your patent's claims, specifications, and the historical file wrapper. We identify the broadest independent claim and isolate the key elements and limitations described within it.
• Identify Potential Infringers: We analyse the market and identify specific competitor products or technologies that appear to infringe on your protected rights.
• Analyse the Accused Product: We examine the target product in microscopic detail to identify its exact features, components, and internal steps. This involves digging through product documentation, software analysis, and conducting physical product teardowns.
• Compare Claims to the Product: We place your legal claim elements side-by-side with the physical features of the accused product, systematically determining whether every single element of your claim is physically present in their technology.
• Visual Mapping: Finally, we construct the actual chart. We map the target claim elements using strategic color coding to clearly and visually indicate the presence of each element within the infringing product.

Turn Suspicions into Actionable Strategy

Do not let competitors profit from your hard work. If you believe another company is manufacturing, selling, or using your patented invention without permission, you need hard technical proof before taking legal action. Reach out to the litigation support team at M&P IP Protectors to discuss a target product, and let us help you build the undeniable evidence required to enforce your rights and protect your revenue. Contact our team today or call 07948005141 to discuss your case.