---
title: "P027 Re-examination and Invalidation"
method: GET
path: "/advanced-patent-data/re-examination-and-invalidation"
tags: ["Patent Legal Data"]
---

# P027 Re-examination and Invalidation

`GET /advanced-patent-data/re-examination-and-invalidation`

## Request

- Base URL: `https://connect.patsnap.com`
- URL: `https://connect.patsnap.com/advanced-patent-data/re-examination-and-invalidation`
- Auth: HTTP bearer
- TypeScript: <https://skmtc.dev/patsnap/apis/patsnap-open-platform-api/docs/advanced-patent-data/re-examination-and-invalidation/get.ts> (a function with typed inputs; its response is checked against the schema)

Receive re-examination and invalidation data by patent_id or patent_number. This includes re-examination applicant, invalidation applicant, case type, decision number, decision date, and legal ground.

## Query parameters

- `patent_id` string: patent_id
- `patent_number` string: patent_number

## Response `200`

Successful p027 re-examination and invalidation response.

- P027AdvancedPatentDataReExaminationAndInvalidationResponse
  - `data` P027AdvancedPatentDataReExaminationAndInvalidationPatentReexamInvalidResponse[]: response data
    - `pn` string: patent number
    - `lang` string: lang
    - `patent_id` string: patent id
    - `patent_reexam_invalid_data` P027AdvancedPatentDataReExaminationAndInvalidationPatentReexamInvalidData[]: patent re-examination and invalidation
      - `country` string: Authority code
      - `applicant` P027AdvancedPatentDataReExaminationAndInvalidationApplicant[]: applicant
        - `name` string: name
        - `sequence` integer: sequence
      - `case_type` string: Case type:<p>FS - reexamination，WX - invalidation，KS - oral proceedings，appeal，EPR，IPRex，SE，判定，訂正無効の審，異議の決，拒絶査定不服の審，訂正の審，請求書却下の決定，補正却下の決，無効の審，補正却下不服の審 .etc</p>
      - `legal_ground` unknown[]: Legal ground
        - unknown
      - `decision_date` integer: Decision date
      - `decision_number` string: Decision number
  - `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)