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GET
/
v1
/
classifications
List Classifications
curl --request GET \
  --url https://api.example.com/v1/classifications
{
  "object": "list",
  "data": [
    {
      "class_number": 9,
      "title": "Computers and Scientific Devices",
      "type": "goods",
      "description": "Scientific, research, navigation, surveying, photographic, cinematographic, audiovisual, optical, weighing, measuring, signalling, detecting, testing, inspecting, life-saving and teaching apparatus and instruments; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling the distribution or use of electricity; apparatus and instruments for recording, transmitting, reproducing or processing sound, images or data; recorded and downloadable media, computer software, blank digital or analogue recording and storage media."
    },
    {
      "class_number": 35,
      "title": "Advertising and Business Services",
      "type": "services",
      "description": "Advertising; business management, organization and administration; office functions."
    },
    {
      "class_number": 42,
      "title": "Science and Technology Services",
      "type": "services",
      "description": "Scientific and technological services and research and design relating thereto; industrial analysis, industrial research and industrial design services; quality control and authentication services; design and development of computer hardware and software."
    }
  ],
  "has_more": false,
  "pagination": {
    "cursor": null
  },
  "livemode": true,
  "request_id": "req_qJ6aB2cD"
}

Overview

Returns the complete Nice Classification system used to categorize goods and services in trademark applications. Each class includes its number, title, and description. The Nice Classification is maintained by WIPO and updated annually; Signa always reflects the current edition. This reference endpoint is useful for building class pickers, validating user input, and displaying human-readable class descriptions alongside trademark data.

Query Parameters

type
string
Filter by classification type: goods (classes 1-34) or services (classes 35-45)

Response

data
object[]
{
  "object": "list",
  "data": [
    {
      "class_number": 9,
      "title": "Computers and Scientific Devices",
      "type": "goods",
      "description": "Scientific, research, navigation, surveying, photographic, cinematographic, audiovisual, optical, weighing, measuring, signalling, detecting, testing, inspecting, life-saving and teaching apparatus and instruments; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling the distribution or use of electricity; apparatus and instruments for recording, transmitting, reproducing or processing sound, images or data; recorded and downloadable media, computer software, blank digital or analogue recording and storage media."
    },
    {
      "class_number": 35,
      "title": "Advertising and Business Services",
      "type": "services",
      "description": "Advertising; business management, organization and administration; office functions."
    },
    {
      "class_number": 42,
      "title": "Science and Technology Services",
      "type": "services",
      "description": "Scientific and technological services and research and design relating thereto; industrial analysis, industrial research and industrial design services; quality control and authentication services; design and development of computer hardware and software."
    }
  ],
  "has_more": false,
  "pagination": {
    "cursor": null
  },
  "livemode": true,
  "request_id": "req_qJ6aB2cD"
}

Code Examples

curl "https://api.signa.so/v1/classifications?type=services" \
  -H "Authorization: Bearer sig_live_xxxxxxxxxxxx"

Errors

StatusTypeDescription
400validation_errorInvalid type parameter
401unauthorizedMissing or invalid API key
429rate_limitedToo many requests