---
title: "P071 Classification Number Assistant Query"
method: GET
path: "/search/patent/classification/helper-section-subclass"
tags: ["Patent Data Search"]
---

# P071 Classification Number Assistant Query

`GET /search/patent/classification/helper-section-subclass`

## Request

- Base URL: `https://connect.patsnap.com`
- URL: `https://connect.patsnap.com/search/patent/classification/helper-section-subclass`
- Auth: HTTP bearer
- TypeScript: <https://skmtc.dev/patsnap/apis/patsnap-open-platform-api/docs/search/patent/classification/helper-section-subclass/get.ts> (a function with typed inputs; its response is checked against the schema)

This interface supports querying the list of all subcategories of each type of classification (supporting IPC, CPC, LOC).

## Query parameters

- `code` string: Classification Number
- `type` string, required: The classification number assistant category includes ipc, cpc, and loc

## Response `200`

Successful p071 classification number assistant query response.

- P071ClassificationHelperSectionSubclassResponse
  - `data` P071ClassificationHelperSectionSubclassClassificationHelperResponse[]: response data
    - `id` string: Classification code
    - `has_children` boolean: has children nodes
    - `lang_desc_map` P071ClassificationHelperSectionSubclassLangDescMap
      - `cn` string: Chinese description
      - `en` string: English 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)