---
title: "Claim Chart - Air Market"
description: "You need to show, piece by piece, that each part of a claim is backed by something. This builds that chart - for a patent claim or for any cause of action or defence - with a pin cite in every cell.…"
canonical: "https://airmarket.ai/app/claim-chart"
---

[Air Market](/) / [Legal](/category/legal) / Claim Chart

Skill by [Anthropic](/@anthropics)

# Claim Chart

See element by element what you can prove and what you cannot

## What this does

You need to show, piece by piece, that each part of a claim is backed by something. This builds that chart - for a patent claim or for any cause of action or defence - with a pin cite in every cell. Its main job is telling you where the holes are, so ask it what you are still missing to prove something.

### Top 3 things it does for you

- Build a patent claim chart for infringement or invalidity
- Map a cause of action element by element
- Review a chart somebody else built

## Information

**Claim Chart at a glance**

|  |  |
| --- | --- |
| Kind | Skill |
| Publisher | [Anthropic](/@anthropics) |
| Category | [Legal](/category/legal) |
| Works with | Agent Skills - an open standard supported by 40+ agents |
| Size | 59 KB |
| Licence | Apache-2.0 |
| Repository | [anthropics/claude-for-legal](https://github.com/anthropics/claude-for-legal/tree/4d55f53962293ab0ec0dcfad84c51afb54535975/litigation-legal/skills/claim-chart) |
| GitHub stars | 9,242 (as of Nov 2026) |
| Installs | 694, counted by skills.sh (Nov 2026) |

## Security report

**Verified.** AIR scanned this exact version of Claim Chart and flagged nothing. AIR's verdict: **safe**.

**What Claim Chart's check was run against**

|  |  |
| --- | --- |
| Commit | 4d55f53962293ab0ec0dcfad84c51afb54535975 |
| Content hash | 6c7303f47ed509f3307dbb315d8491c1971851217b13cae7c5fb38ba25b77cd3 |
| Files read | [Browse the files at this exact commit](https://github.com/anthropics/claude-for-legal/blob/4d55f53962293ab0ec0dcfad84c51afb54535975/litigation-legal/skills/claim-chart/SKILL.md) |

A scan is named by the exact content it read, not by a version number. A different version is a different artifact, and nothing here applies to a version AIR has not scanned.

[Read the full security report for Claim Chart](/security/claim-chart)

## About Claim Chart

This builds or reviews an element chart. That covers patent claim charts - infringement, invalidity, or review - and civil element charts for any cause of action or defense.

Every cell is pin-cited, and gap detection is the priority output: what the chart is really for is showing you which elements are not yet supported.

Ask for a claim chart, an element or proof chart, an infringement or invalidity contention, an element-by-element mapping, or simply what you are missing to prove a claim.

## What's inside

- SKILL.md - instructions
- references/element-templates.md - reference

## Questions

### Is Claim Chart safe to install?

AIR scanned this exact version of Claim Chart and flagged nothing. AIR's verdict: safe. The verdict is named by the content that was read, at commit 4d55f5396229, so it cannot drift onto a version nobody scanned. The full report is at https://airmarket.ai/security/claim-chart.

### How do I install Claim Chart?

Open https://airmarket.ai/app/claim-chart on Air Market and use the install action: Air Market hands Claude a prompt naming this exact skill, and Claude sets it up. Source, pinned to the exact commit this listing describes: https://github.com/anthropics/claude-for-legal/tree/4d55f53962293ab0ec0dcfad84c51afb54535975/litigation-legal/skills/claim-chart. Install from that link, not the branch.

## Related on Air Market

- [More Legal listings](/category/legal)
- [Everything by Anthropic](/@anthropics)

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Canonical URL: <https://airmarket.ai/app/claim-chart>