Assignee

Bulk patent assignment lookup for whole portfolios

A bulk patent assignment lookup takes a list of US patent numbers and returns, for each one, the owner of record, the ordered chain of title and any unreleased security interest. Assignee runs the whole list in one pass from USPTO assignment records and gives you one table you can sort, filter and export. It replaces hours of repeated single-patent searches before a deal, a loan or a portfolio cleanup.

9,567,890 10,890,123 9,890,123

What every row of the bulk results shows

  • Current owner of record, with recording date and reel and frame
  • Number of recorded transfers and the date of the last one
  • Whether the owner of record matches the name you expected
  • Security interests and whether each has a matching release
  • Title risk flags, such as an inventor who never assigned or a name that no longer exists
  • A link from each line to the recorded document behind it

Sort by flag to put the problem patents at the top. Everything else is a clean row you can accept and move on from.

Lists that people run in bulk

Acquirers receive a schedule of patents from the seller and need to confirm that the seller really holds title to each one. Lenders get a collateral schedule and need to know what is already recorded against it. In-house teams inherit a portfolio after a merger and want to find patents still recorded in a former entity. Law firms reconcile a client docket with the public record before a renewal or a filing.

For a deal-sized list with a written findings summary, use the patent portfolio audit. For one high-value patent, the patent chain of title report goes deeper on a single file.

From a pasted list to an exportable table

  1. 1

    Paste or upload your patent numbers. Application numbers work too.

  2. 2

    Assignee reads the recorded assignments for each one and connects conveyances, inventor assignments, mergers and name changes into an ordered chain.

  3. 3

    Review the table. Open the flagged rows and follow the links to the source documents.

  4. 4

    Export CSV, or Excel with reel and frame on the Firm plan, and attach it to the deal or matter file.

Repeat the run before closing, since a new recordation can land after your first pass. Patent monitoring alerts you when the record changes.

Bulk lookup options side by side

Option Strength Weakness
USPTO Assignment Center, one patent at a time No fee, official source Manual, one record per search, chain assembled by hand
USPTO bulk assignment data files Complete raw data You need engineers to load, join and interpret XML
Certified abstract of title Certified record for a court or counterparty $38 per patent in USPTO fees, lists documents without analysis
General patent search platforms Strong on prior art and families Built for technical search, not for ownership chains and release matching
Assignee Whole list in one pass, owner, chain, liens and flags Not a legal opinion, counsel still reviews flagged rows

Use the official tools to open a source filing and a certified abstract when certification is required. Assignee fits the work in between, where the volume makes manual lookup too slow.

Plans sized to your list

Analyst costs $49 per month billed yearly, or $99 monthly, with 25 reports. Professional costs $124 per month billed yearly, or $249 monthly, with 150 reports, title risk flags and release tracking. Firm costs $299 per month billed yearly, or $599 monthly, with 600 reports, owner lists by corporate family, Excel export and API access. Enterprise starts at $1,499 per month for unlimited reports and seats. Compare them on the pricing page, or feed results into your own system through the assignment API.

Questions about bulk patent assignment lookup

How do I look up patent assignments in bulk?

Paste your list of patent numbers into Assignee and run it once. Each patent returns its owner of record, ordered chain of title and open security interests in one table. You export the table to CSV or Excel for the deal or matter file.

How many patents can I check at once?

Your plan sets the monthly report allowance: 25 on Analyst, 150 on Professional and 600 on Firm. Enterprise has unlimited reports. A report is one patent, so a 150 patent schedule fits inside one month on Professional.

Can I download all USPTO assignment data instead?

The USPTO publishes bulk assignment data files, and they are complete. They also arrive as raw records, so you must load them, link them to patents and rebuild each chain yourself. Assignee does that work and keeps every line tied to the recorded document.

Does a clean bulk result prove the seller owns every patent?

No. It shows what was recorded. An unrecorded assignment can still move title, so counsel should read the executed agreements for the patents that matter most.

Can I search by owner name instead of by number?

Yes on Firm, where owner lists work by corporate family. That finds patents recorded under subsidiaries and former names that a plain name search misses.

Run your patent list and see the exceptions

Enter a patent from your schedule, check the chain against the source records, then pick the plan that covers the full list.

Trace ownership