---
title: "Ownership records of one patent"
method: GET
path: "/v1/patents/{patent_number}/assignments"
tags: ["patent status"]
---

# Ownership records of one patent

`GET /v1/patents/{patent_number}/assignments`

## Request

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

Same as /v1/applications/{n}/assignments but keyed by patent number: who owns this patent and every recorded transfer or security interest against it.

## Path parameters

- `patent_number` string, required: US patent number without commas; design/plant/reissue prefixes allowed (D912345, PP12345, RE48123).

## 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)