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Getting Started

The Classification Prediction API is a collection of services supporting the patent examination process. Cooperative Patent Classification (CPC) prediction service aims to predict the top CPC symbol (subgroup level). This service utilises state-of-the-art Machine Learning technologies and Natural Language Processing to predict latest CPC symbols corresponding to a full-text patent specification.

For more details, and to request access to the API please visit the IP Australia Developer Portal.

Key Information

Base URL


The base URL for the Test instance of the Classification Prediction API is:


This API currently is not in production, check back for updates!


More details about each request will be available once the API is live in production, for full details about the api during its testing phase, including example request and response payloads, please view the Classification Prediction API on the IP Australia Developer Portal.

Response Format

All responses are in JSON

Contact Us

If you require further information or assistance regarding IP Australia’s APIs, please contact us via:



IPAustralia APIs enforce the OAuth 2.0 protocol for application and user authorisation. OAuth is the industry standard for assuring that online transactions are secure and your application must need provide a valid access token for each request it makes to the IP Australia API.

The OAuth 2.0 framework specifies several grant types for different use cases and IP Australia External Token API provides access tokens for following grant types:

Client credentials grant - Application access token

**This grant is intended for B2B Partner Applications to get access token using the provided client id/secret keys. **

The Client Credentials grant is used when applications request an access token to access their own resources, not on behalf of a user.

**Authorization code grant - **User access Token

**This grant is intended for 3rd Party Developer Apps to get access token on behalf of their end user. **

To be implemented in future

External Token API Endpoints



How to call API with OAuth Security Token

  1. Obtain OAuth2 Access Token From External Token API

Send HTTP Post Request to IPAustralia’s External Token API with following form parameters:


Sample Request

Content-Type: application/x-www-form-urlencoded


OAuth Access token (Json Web Token) is returned in the response JSON Payload under “access_token” as below:

Sample Response:

HTTP/1.1 200 OK

   "access_token" : "eyJraWQiOiJWc2kyU0l0SkpvN1pzekRzWWNDUWlUU1wvTFJQeHEyVW50MDc5ZjNSSTFpbz0iLCJhbGciOiJSUzI1NiJ9.eyJzdWIiOiI3M29hbTBpZWwxbjl0Zjk4Y24wMGxqYTY2MiIsInRva2VuX3VzZSI6ImFjY2VzcyIsInNjb3BlIjoiaHR0cHM6XC9cL2FwaS5pcGF1c3RyYWxpYS5nb3YuYXVcL2IyYlwvaXByaWdodHNcL2FnZW50IiwiYXV0aF90aW1lIjoxNTQ2NDg1MjA1LCJpc3MiOiJodHRwczpcL1wvY29nbml0by1",
   "expires_in" : 3600,
   "token_type" : "Bearer"

Access Token is valid for 1 hour, hence the same token can be reused across multiple API requests.

2.** **Pass OAuth Access Token in the HTTP Header of the actual API Request

Send the above OAuth Token in HTTP Authorisation Header of the API Request in the below format:

Authorizaton: {token_type} + space + {access_token}

Sample Patent Renewal Request


Authorization: Bearer eyJraWQiOiJWc2kyU0l0SkpvN1pzekRzWWNDUWlUU1wvTFJQeHEyVW50MDc5ZjNSSTFpbz0iLCJhbGciOiJSUzI1NiJ9.eyJzdWIiOiI3M29hbTBpZWwxbjl0Zjk4Y24wMGxqYTY2MiIsInRva2VuX3VzZSI6ImFjY2VzcyIsInNjb3BlIjoiaHR0cHM6XC9cL2FwaS5pcGF1c3RyYWxpYS5nb3YuYXVcL2IyYlwvaXByaWdodHNcL2FnZW50IiwiYXV0aF90aW1lIjoxNTQ2NDg1MjA1LCJpc3MiOiJodHRwczpcL1wvY29nbml0by1


   "submitterReference" : "MyPatentRenewal",

   "numOfYearsToRenew" : "1"