---
title: "Claims, abstract and CPC of a pre-grant publication"
method: GET
path: "/v1/publications/{publication_number}/claims"
tags: ["patent status"]
---

# Claims, abstract and CPC of a pre-grant publication

`GET /v1/publications/{publication_number}/claims`

## Request

- Base URL: `https://api.patentdata.ai`
- URL: `https://api.patentdata.ai/v1/publications/{publication_number}/claims`
- Auth: one of:
  - API key in header `X-API-KEY`
  - HTTP bearer

Answers: what does this published application (as published, not as later amended) actually claim, what is it about, and how is it classified. Returns `claims` [{number, text, dependent_on}] (dependent_on lists the claims a dependent claim refers to; empty for independent claims; `canceled: true` marks claims canceled by amendment, `number_raw` flags a claim USPTO mis-numbered), `independent_claims`, `claim_count`, `canceled_claims`, `abstract`, `cpc` (CPC symbols as classified at publication, main first), `title`, `kind`, `application_number`, `date`. Text comes from USPTO's weekly full-text XML; a number outside the weeks we hold is a 404 whose `detail` states the covered dates — the status endpoints cover every application regardless. Costs 1 request. A bare number (2023/0080435) returns the latest kind on file (A9 corrected over A2 over A1).

## Path parameters

- `publication_number` string, required: Pre-grant publication number, e.g. US20230080435A1 or 2023/0080435.

## Response `200`

Successful Response

- unknown

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/patentdata/apis/patent-status-api.md) · [All operations](https://skmtc.dev/patentdata/apis/patent-status-api/llms.txt) · [OpenAPI document](https://skmtc.dev/patentdata/apis/patent-status-api/revisions/320133a82b42?raw)