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USPTO Patent Assignments Scraper

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Search public USPTO patent assignment records by assignee, assignor, patent/application number, reel/frame, and dates.

Pricing

Pay per event

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Developer

Stas Persiianenko

Actor stats

Bookmarked

Total users

Monthly active users

2 days ago

Last modified

Categories

Business

searchQuery

Optional

Query submitted to the USPTO search.

Type:string | null

Example:EXAMPLE TECHNOLOGIES

searchBy

Optional

USPTO field used for the search.

Type:string | null

Example:exactAssigneeName

resultType

Optional

Whether the row contains assignment details or a property summary.

Type:string | null

Example:assignment

Options:

assignmentsummary

reelNumber

Optional

USPTO assignment reel number.

Type:string | null

Example:12345

frameNumber

Optional

USPTO assignment frame number.

Type:string | null

Example:678

reelFrame

Optional

Combined USPTO reel and frame identifier.

Type:string | null

Example:12345/678

assignmentSequence

Optional

Sequence of the assignment within the record.

Type:number | null

Example:1

conveyance

Optional

USPTO description of the ownership conveyance.

Type:string | null

Example:ASSIGNMENT OF ASSIGNORS INTEREST.

recordationDate

Optional

Date the assignment was recorded by the USPTO.

Type:string | null

Example:01/15/2025

executionDate

Optional

Date the assignment was executed.

Type:string | null

Example:01/10/2025

receiptDate

Optional

Date the USPTO received the assignment.

Type:string | null

Example:01/13/2025

mailDate

Optional

Date associated correspondence was mailed.

Type:string | null

Example:01/20/2025

pageCount

Optional

Number of pages in the recorded assignment document.

Type:number | null

Example:4

assignors

Optional

Parties transferring an interest in the patent property.

Type:object[] | null

Example:

[
  {
    "name": "Sample Inventor",
    "executionDate": "01/10/2025"
  }
]

assignees

Optional

Parties receiving an interest in the patent property.

Type:object[] | null

Example:

[
  {
    "name": "Example Technologies LLC",
    "city": "Sample City",
    "country": "UNITED STATES"
  }
]

correspondentName

Optional

Name of the correspondence contact on the assignment.

Type:string | null

Example:Sample Patent Counsel

correspondentAddress

Optional

Formatted address of the correspondence contact.

Type:string | null

Example:200 Example Street, Sample City, CA 90001

applicationNumber

Optional

USPTO patent application number.

Type:string | null

Example:12345678

patentNumber

Optional

USPTO patent number.

Type:string | null

Example:7654321

publicationNumber

Optional

Patent publication number.

Type:string | null

Example:US20250012345A1

pctNumber

Optional

Patent Cooperation Treaty application number.

Type:string | null

Example:PCT/US2025/012345

inventionTitle

Optional

Title of the invention linked to the assignment.

Type:string | null

Example:Example Data Processing System

inventors

Optional

Inventor names supplied by the USPTO.

Type:string | null

Example:Sample Inventor; Example Inventor

filingDate

Optional

Filing date of the patent application.

Type:string | null

Example:01/05/2024

issueDate

Optional

Date the patent was issued.

Type:string | null

Example:06/10/2025

imageUrl

Optional

USPTO URL for the assignment document image when available.

Type:string | null

Example:https://assignmentcenter.uspto.gov/example-document

sourceUrl

Optional

USPTO Assignment Center search URL for this result.

Type:string | null

Example:https://assignmentcenter.uspto.gov/search/patent/exactAssigneeName/EXAMPLE%20TECHNOLOGIES

rawRecordId

Optional

Stable identifier derived from the USPTO record.

Type:string | null

Example:patent:12345/678:1:1

scrapedAt

Optional

UTC timestamp when the row was extracted.

Type:string | null

Example:2025-01-15T12:00:00.000Z

Other properties may be included.

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