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POST
/
legal
/
v1
/
patent-search
Search USPTO patent applications
curl --request POST \
  --url https://api.case.dev/legal/v1/patent-search \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "query": "<string>",
  "applicationStatus": "<string>",
  "applicationType": "Utility",
  "assignee": "<string>",
  "inventor": "<string>",
  "filingDateFrom": "2023-12-25",
  "filingDateTo": "2023-12-25",
  "grantDateFrom": "2023-12-25",
  "grantDateTo": "2023-12-25",
  "limit": 25,
  "offset": 0,
  "sortBy": "filingDate",
  "sortOrder": "desc"
}
'
{
  "query": "<string>",
  "totalResults": 123,
  "offset": 123,
  "limit": 123,
  "results": [
    {
      "applicationNumber": "<string>",
      "patentNumber": "<string>",
      "title": "<string>",
      "applicationType": "<string>",
      "status": "<string>",
      "filingDate": "2023-12-25",
      "grantDate": "2023-12-25",
      "inventors": [
        "<string>"
      ],
      "assignees": [
        "<string>"
      ],
      "entityStatus": "<string>"
    }
  ]
}

Authorizations

​
Authorization
string
header
required

API key starting with sk_case_

Body

application/json

Patent search query and filters

​
query
string
required

Free-text search across all patent fields, or field-specific query (e.g. "applicationMetaData.patentNumber:11234567"). Supports AND, OR, NOT operators.

Minimum string length: 1
​
applicationStatus
string

Filter by application status (e.g. "Patented Case", "Abandoned", "Pending")

​
applicationType
enum<string>

Filter by application type

Available options:
Utility,
Design,
Plant,
Provisional,
Reissue
​
assignee
string

Filter by assignee/owner name (e.g. "Google LLC")

​
inventor
string

Filter by inventor name

​
filingDateFrom
string<date>

Start of filing date range (YYYY-MM-DD)

​
filingDateTo
string<date>

End of filing date range (YYYY-MM-DD)

​
grantDateFrom
string<date>

Start of grant date range (YYYY-MM-DD)

​
grantDateTo
string<date>

End of grant date range (YYYY-MM-DD)

​
limit
integer
default:25

Number of results to return (default 25, max 100)

Required range: 1 <= x <= 100
​
offset
integer
default:0

Starting position for pagination

Required range: x >= 0
​
sortBy
enum<string>
default:filingDate

Field to sort results by

Available options:
filingDate,
grantDate
​
sortOrder
enum<string>
default:desc

Sort order (default desc, newest first)

Available options:
asc,
desc

Response

Patent search completed successfully

​
query
string

Original search query

​
totalResults
integer

Total number of matching patent applications

​
offset
integer

Current pagination offset

​
limit
integer

Number of results returned

​
results
object[]

Array of matching patent applications