> ## Documentation Index
> Fetch the complete documentation index at: https://docs.abigail.app/llms.txt
> Use this file to discover all available pages before exploring further.

# Lookup Application

<Note>
  This endpoint is free and requires no authentication.
</Note>

Application numbers are normalized automatically -- slashes, commas, and spaces are removed.
All of these formats work:

* `17200011`
* `17/200,011`
* `17 200 011`


## OpenAPI

````yaml api-reference/free/openapi.json get /v1/openclaw/lookup/{application_number}
openapi: 3.1.0
info:
  title: Abigail API
  description: >-
    Patent prosecution AI API. Analyze office actions, draft response documents,
    and access examiner intelligence.
  version: 1.0.0
  contact:
    name: Abigail Support
    url: https://abigail.app
    email: support@abigail.app
servers:
  - url: https://api.abigail.app
    description: Production
security: []
paths:
  /v1/openclaw/lookup/{application_number}:
    get:
      tags:
        - Free Endpoints
      summary: Lookup Application
      description: >-
        Look up a patent application by number. Returns metadata including
        title, status, filing date, examiner, and art unit.


        No authentication required. Application numbers are normalized
        automatically (slashes, commas, and spaces are removed).
      operationId: lookup_application
      parameters:
        - name: application_number
          in: path
          required: true
          description: >-
            USPTO application number. Formats accepted: `17200011`,
            `17/200,011`, `17200011`.
          schema:
            type: string
          example: '17200011'
      responses:
        '200':
          description: Application found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApplicationLookup'
              example:
                application_number: '17200011'
                invention_title: SYSTEMS AND METHODS FOR AI-ASSISTED PATENT PROSECUTION
                status: pending
                filing_date: '2025-01-15'
                examiner_name: SMITH, JOHN A
                current_art_unit: '3621'
                response_deadline: '2026-06-01'
                critical_deadline_date: null
                critical_deadline_correspondence_id: null
        '404':
          description: Application not found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                error: true
                error_code: app_not_found
                message: Application 17200011 not found in USPTO Patent Center.
                agent_suggestion: >-
                  Application not found. Verify the number format (17200011 or
                  17/200,011) and check for typos.
components:
  schemas:
    ApplicationLookup:
      type: object
      properties:
        application_number:
          type: string
        invention_title:
          type: string
        status:
          type: string
        filing_date:
          type: string
          format: date
        examiner_name:
          type: string
        current_art_unit:
          type: string
        response_deadline:
          type: string
          format: date
          nullable: true
        critical_deadline_date:
          type: string
          format: date
          nullable: true
        critical_deadline_correspondence_id:
          type: string
          nullable: true
    ErrorResponse:
      type: object
      description: Structured error with agent_suggestion for LLM consumers.
      properties:
        error:
          type: boolean
          const: true
        error_code:
          type: string
          description: Machine-readable error code.
        message:
          type: string
          description: Human-readable error message.
        agent_suggestion:
          type: string
          description: Actionable suggestion for AI agents consuming this API.

````