/api/v1/cpc_class/

In data version 20261027.2 this endpoint answers 501 ERR_NOT_IMPLEMENTED: cpc_classes: /api/v1/cpc_class/ (each patent's CPC classes come in its cpc_current and cpc_at_issue groups).

Upstream view CPCClassList (index cpc_classes, response key cpc_classes). Any field may be null where the bulk data has no value. Default fields (f): cpc_class_id, cpc_class_title. Default sort (s): [{"cpc_class_id": "asc"}]. A lookup endpoint: q may be omitted to list every record. When the build in service does not carry this endpoint's data set it answers 501 with X-Status-Reason-Code ERR_NOT_IMPLEMENTED and X-Status-Reason naming the data set.

Routes

GET POST /api/v1/cpc_class/ GET POST /api/v1/cpc_class/{pk}/

Response key

cpc_classes

Default f

cpc_class_id, cpc_class_title

Default s

[{"cpc_class_id": "asc"}]

Default o

{}

q

may be omitted (a lookup endpoint lists every record)

Detail key

cpc_class_id in the path; a "/" in a key is written ":"

Example

curl -s -G -H "X-Api-Key: $KEY" https://patentref.io/api/v1/cpc_class/ \
  --data-urlencode 'o={"size": 10}'

import json, os, requests

base_url = "https://patentref.io"
headers = {"X-Api-Key": os.environ["PATENTREF_KEY"]}
params = {"o": {"size": 10}}
r = requests.get(base_url + "/api/v1/cpc_class/", headers=headers,
                 params={k: json.dumps(v) for k, v in params.items()})
r.raise_for_status()
data = r.json()
print(data["total_hits"], data["cpc_classes"][:3])

Fields

Kind is how q treats the field (grammar, Field kinds). Sortable fields go in s. Nested fields are named with a dot in q and f; naming the group returns its upstream fields, and a field whose note says it is present only when f names it comes back only then. The rows of a group come in the order of their source (grammar, the response and paging).

Machine-readable: this page's data as JSON, and the operation in openapi.json (operationId CPCClassList).