---
title: "P023 Application Domain V2"
method: GET
path: "/high-value-data/application-domain-v2"
tags: ["Patent Mining Data"]
---

# P023 Application Domain V2

`GET /high-value-data/application-domain-v2`

## Request

- Base URL: `https://connect.patsnap.com`
- URL: `https://connect.patsnap.com/high-value-data/application-domain-v2`
- Auth: HTTP bearer
- TypeScript: <https://skmtc.dev/patsnap/apis/patsnap-open-platform-api/docs/high-value-data/application-domain-v2/get.ts> (a function with typed inputs; its response is checked against the schema)

Receive application domain classification data by patent_id or patent_number.

## Query parameters

- `lang` string: Select the language , you can choose cn or en.
- `patent_id` string: patent_id
- `patent_number` string: patent_number

## Response `200`

Successful p023 application domain v2 response.

- P023HighValueDataApplicationDomainV2Response
  - `data` P023HighValueDataApplicationDomainV2ApplicationDomainTreeResponse[]: response data
    - `pn` string: Patent number
    - `lang` string: language
    - `patent_id` string: Patent id
    - `application_domain_data` P023HighValueDataApplicationDomainV2ApplicationDomain[]: Application domain data
      - `code` integer: Domain classification code
      - `node_list` unknown[]: Application domain data
        - unknown
      - `description` string: Domain classification description
  - `status` boolean, required: Status
  - `error_msg` string: Error Message
  - `error_code` integer, required: Error Code

## Other responses

- `401`: Unauthorized.
- `403`: Forbidden.
- `404`: Not Found.

---

[API](https://skmtc.dev/patsnap/apis/patsnap-open-platform-api.md) - [All operations](https://skmtc.dev/patsnap/apis/patsnap-open-platform-api/llms.txt) - [OpenAPI document](https://skmtc.dev/patsnap/apis/patsnap-open-platform-api/revisions/c2264a0de595?raw)