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GET
Lookup Application
This endpoint is free and requires no authentication.
Application numbers are normalized automatically — slashes, commas, and spaces are removed. All of these formats work:
  • 17200011
  • 17/200,011
  • 17 200 011

Path Parameters

application_number
string
required

USPTO application number. Formats accepted: 17200011, 17/200,011, 17200011.

Response

Application found

application_number
string
invention_title
string
status
string
filing_date
string<date>
examiner_name
string
current_art_unit
string
response_deadline
string<date> | null
critical_deadline_date
string<date> | null
critical_deadline_correspondence_id
string | null