# x402stock Patent Continuity

> x402stock Patent Continuity is a paid API for AI agents from agents.x402stock.xyz, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-19).

Returns the full patent family (parent and child applications) for a given US patent application number, including filing dates, status, and continuity relationships.

## Facts

- Endpoint: GET https://agents.x402stock.xyz/api/v1/patent/:application/continuity?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-19
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402stock-patent-continuity-df55f84e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_awONIg9eLg0I-lY7Nguc7

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 x402stock-patent-continuity-df55f84e
```

Example prompt: Show me the full patent family for US application number 17123456 — I want to see all parent and child applications, their filing dates, statuses, and how they relate to each other (continuation, divisional, national-stage, etc.).

## When to prefer this

Use this endpoint when you need to understand the full scope of IP protection around a specific invention — tracing how a single application has spawned continuations, divisionals, or national-stage entries. Prefer this over a general patent search when you already have a specific application number and need the family tree rather than keyword-based discovery.

## Known failure modes

- Invalid or non-existent application number returns an error or empty result
- Application number with no recorded continuity data returns an empty family
- USPTO data lag may mean very recently filed applications are not yet reflected
- Malformed application number format may result in a 400-level error
- Payment failure (insufficient USDC) prevents the call from completing

## How this service works

The patent family for one application — pass the `{application}` number. Returns parent and child applications with their numbers, filing dates, status, and the continuity relationship (continuation, divisional, national-stage entry, etc.). Maps how deep a company's protection on an invention runs. Source: USPTO. From x402stock, a market & economic data API (x402, USDC).

## Output

A structured list of related patent applications in the family, each with: application number, filing date, current status, and the type of continuity relationship (e.g. continuation, continuation-in-part, divisional, national-stage entry) connecting it to the root application.

## 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"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "pathParams": {
     "type": "object",
     "application": {
      "type": "string"
     }
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402stock-patent-continuity-df55f84e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agents.x402stock.xyz](https://www.zero.xyz/host/agents.x402stock.xyz/llms.txt)