# serp402 Google Patents Search

> serp402 Google Patents Search is a paid API for AI agents from serp402.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-31).

Search Google Patents and return structured JSON results including patent metadata, assignees, inventors, filing dates, and status

## Facts

- Endpoint: POST https://serp402.com/api/v1/google-patents?utm_source=zero.xyz
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/serp402-google-patents-search-a10c398e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_AZGBwplp117Vuyxo5_LbT

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 serp402-google-patents-search-a10c398e -d '<json body>'
```

Example prompt: Search Google Patents for 'solid-state battery electrolyte' filed by Samsung between 2020 and 2023, show me granted patents only from US and WO, sorted by newest, 20 results per page.

## When to prefer this

Choose this endpoint when you need structured, machine-readable Google Patents search results via a pay-per-call model with no API key or subscription required. It is ideal for agents that need to search patents programmatically, filter by assignee, inventor, country, status, or date range, and paginate through results. Prefer this over scraping Google Patents directly (which risks blocks) or over SerpAPI/Bright Data if you want a low-commitment per-call USDC micropayment model without account setup.

## Known failure modes

- Invalid or missing query parameter returns an error response
- Unsupported country code causes filtering to fail or return empty results
- Date format not matching type:YYYYMMDD pattern causes parameter rejection
- Requesting num outside 10-100 range may return an error or be clamped
- No results found for highly specific queries returns empty results array
- Payment failure (insufficient USDC balance or x402 protocol error) blocks the request

## How this service works

Google Patents: Google Patents results, returned as JSON. Structured JSON, USD 0.05 per call in USDC — no API key, no account, no subscription, no minimum. Not affiliated with, endorsed by or an official channel of any of the services the results come from. All trademarks and copyright remain the property of their respective owners.

## Output

A structured JSON object containing a list of patent results, each with fields such as patent title, patent number, link, assignee, inventor(s), filing date, priority date, publication date, patent status (grant or application), country, abstract snippet, and optionally Google Scholar results if enabled.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "q": {
   "type": "string"
  },
  "num": {
   "type": "string",
   "description": "Parameter controls the number of results per page. Minimum: 10 , Maximum: 100 ."
  },
  "dups": {
   "type": "string",
   "description": "method of deduplication. Either Family (default) or Publication. List of supported values are: language - Publication"
  },
  "page": {
   "type": "string",
   "description": "page number. It's used for pagination. (e.g., 1 (default) is the first page of results, 2 is the 2nd page of results, etc.)."
  },
  "sort": {
   "type": "string",
   "description": "sorting method. By default, the results are sorted by Relevance. List of supported values are: new - Newest old - Oldest Patent results are sorted by…"
  },
  "after": {
   "type": "string",
   "description": "minimum date of the results. The format of this field is type:YYYYMMDD . type can be one of priority , filing , and publication . Example: - priority:20221231…"
  },
  "before": {
   "type": "string",
   "description": "maximum date of the results. The format of this field is type:YYYYMMDD . type can be one of priority , filing , and publication . Example: - priority:20221231…"
  },
  "status": {
   "type": "string",
   "description": "Parameter filters patent results by status. List of supported values are: GRANT - Grant APPLICATION - Application"
  },
  "country": {
   "type": "string",
   "description": "Parameter filters patent results by countries. Split multiple country codes with , (comma). List of supported country codes . Example: WO,US ."
  },
  "patents": {
   "type": "string",
   "description": "Parameter controls whether or not to include Google Patents results. (Defaults to true)"
  },
  "scholar": {
   "type": "string",
   "description": "Parameter controls whether or not to include Google Scholar results. (Defaults to false)"
  },
  "assignee": {
   "type": "string",
   "description": "assignees of the patents. Split multiple assignees with , (comma). Wrap names containing commas in parentheses, e.g. (Tesla, Inc) ."
  },
  "inventor": {
   "type": "string",
   "description": "inventors of the patents. Split multiple inventors with , (comma). Wrap names containing commas in parentheses, e.g. (Doe, John) ."
  },
  "language": {
   "type": "string",
   "description": "Parameter filters patent results by languages. Split multiple languages with , (comma). List of supported values are: ENGLISH , GERMAN , CHINESE , FRENCH ,…"
  },
 
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/serp402-google-patents-search-a10c398e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from serp402.com](https://www.zero.xyz/host/serp402.com/llms.txt)