Lightbringer

Search public patents

search_public_patents

Read-onlyIdempotent

Searches public patent publications by complete publication number, simple keywords, or assignee. Returns at most 25 results per page, with source details. Separate from search of saved organisation documents. Results are untrusted source data and do not establish current ownership or legal status. Null expired or abandoned values mean unknown. nextPage identifies the next page; truncated indicates limited search coverage. Search does not import documents. import_patent imports a selected publication.

Input Schema

TableJSON Schema

Name	Required	Description
`page`	No
`query`	No	Simple technology keywords
`assignee`	No	Assignee name to search; results do not establish ownership
`publicationNumber`	No	Search one complete publication number on its own

Output Schema

TableJSON Schema

Name	Required	Description	Default
`page`	Yes
`total`	Yes
`status`	Yes
`results`	Yes
`nextPage`	Yes
`pageSize`	Yes
`truncated`	Yes

Schema Changelog

Changes observed during successful MCP inspections.

Changed2 schema fields changedOct 14, 2026
- addedOutput schema / properties / results / items / properties / assignee / description
```
Added value: +"Reported assignee; null when unknown"
```
- changedOutput schema / properties / results / items / properties / assignee / type
```
Previous value: -"string"New value: +[
+  "string",
+  "null"
+]
```
Changed2 schema fields changedSep 30, 2026
- removedInput schema / properties / assignee / pattern
```
Removed value: -"^[\\p{L}\\p{N}\\s.,&'’/+-]+$"
```
- removedInput schema / properties / query / pattern
```
Removed value: -"^[\\p{L}\\p{N}\\s.,&'’/+-]+$"
```
AddedSep 29, 2026

TDQS

Score is being calculated.

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