Patent Search

Search US patent applications and granted patents via the USPTO

Search US patent applications and granted patents via the USPTO Open Data Portal. Covers applications filed on or after January 1, 2001. Supports free-text queries, field-specific filters, date ranges, sorting, and pagination.

Search patents

Endpoint

POST /legal/v1/patent-search

cURL

curl -X POST https://api.case.dev/legal/v1/patent-search \
  -H "Authorization: Bearer $CASEDEV_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "query": "neural network medical imaging",
    "assignee": "General Electric",
    "applicationType": "Utility",
    "filingDateFrom": "2018-01-01",
    "limit": 5,
    "sortBy": "filingDate",
    "sortOrder": "desc"
  }'

Key parameters

Parameter	Type	Description
query	string	Free-text query or field-specific search (supports AND/OR/NOT)
applicationType	string	Utility, Design, Plant, Provisional, Reissue
applicationStatus	string	Filter by status (Patented Case, Pending, Abandoned)
assignee	string	Filter by assignee/owner name
inventor	string	Filter by inventor name
filingDateFrom	string	Start of filing date range (YYYY-MM-DD)
filingDateTo	string	End of filing date range (YYYY-MM-DD)
grantDateFrom	string	Start of grant date range (YYYY-MM-DD)
grantDateTo	string	End of grant date range (YYYY-MM-DD)
limit	number	Results to return (max 100)
offset	number	Pagination offset

See the API reference for the full parameter and response schema.