# EPO INPADOC Patent Family Lookup

> EPO INPADOC Patent Family Lookup is a paid API for AI agents from 2s.io, paid per call via x402, $0.0045/call, status unknown (last checked 2026-09-14).

Returns the INPADOC patent family for a given publication number via EPO OPS — all worldwide equivalents (same priority) with country, document number, kind code, and combined publication number.

## Facts

- Endpoint: GET https://2s.io/api/patents/epo-family
- Price: $0.0045/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/epo-inpadoc-patent-family-lookup-37e397e5
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_PR7kuC8a_rRPffiVZraOH

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability epo-inpadoc-patent-family-lookup-37e397e5
```

Example prompt: Can you find all the worldwide patent equivalents for EP1000000 — I want to see every country where this invention was also filed or granted, using the epodoc format?

## When to prefer this

Use this endpoint when you need to discover all international equivalents of a patent filing — especially when the user has a non-US publication number and wants global coverage. Prefer this over US-only patent databases when the invention may have been filed in Europe, Asia, or other jurisdictions. Ideal for IP due diligence, freedom-to-operate analysis, or competitive intelligence requiring cross-border patent landscape data.

## Known failure modes

- Invalid or malformed publication number returns an error
- Unknown number format causes rejection
- Patent not found in EPO OPS database returns empty family or 404
- Rate limiting or upstream EPO OPS unavailability returns 503
- Number too short or too long (outside 2-40 char range) fails schema validation

## How this service works

INPADOC patent family for a publication via EPO OPS — every worldwide equivalent of the same invention (same priority), each with country, document number, kind code, and combined publication number. Use it to find where a patent was also filed/granted globally. Net-new (no US-only equivalent).

## Output

A list of INPADOC patent family members for the queried publication, each including the country code, document number, kind code, and combined publication number — representing every worldwide equivalent sharing the same priority.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "queryParams"
   ],
   "properties": {
    "type": {
     "const": "http"
    },
    "method": {
     "const": "GET"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "number"
     ],
     "properties": {
      "format": {
       "enum": [
        "epodoc",
        "docdb",
        "original"
       ],
       "type": "string",
       "description": "Number format (default epodoc, e.g. EP1000000 or US20260170385)."
      },
      "number": {
       "type": "string",
       "maxLength": 40,
       "minLength": 2,
       "description": "Publication number, e.g. EP1000000."
      }
     },
     "additionalProperties": false
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/epo-inpadoc-patent-family-lookup-37e397e5/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from 2s.io](https://www.zero.xyz/host/2s.io/llms.txt)