# Patent Verification — Independent Count

*Litman v. Goldberg — Attorney-of-record verification*

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## Purpose

The 905-patent list (`MASTER_PATENT_LIST_CHRONOLOGICAL.csv`) was built from USPTO public search. The verification file provides an independent or enriched source.

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## PatentsView → USPTO ODP Migration (March 2026)

**PatentsView** is migrating to the USPTO Open Data Portal (data.uspto.gov). New PatentsView accounts are being directed to the ODP API. Until the migration is complete (March 20, 2026), use your **USPTO ODP API key** from data.uspto.gov.

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## Source

| Source | File | Count |
|-------|------|-------|
| USPTO public search | MASTER_PATENT_LIST_CHRONOLOGICAL.csv | 905 |
| Verification | PATENTSVIEW_VERIFICATION_LITMAN.csv | (see file) |

The verification file uses the same 905 patents when ODP attorney search is not yet available. Post-migration, ODP may provide independent count + assignee data.

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## What the Data Contains

- Patents with **Richard Litman** as attorney
- Patent date **>= 2020-06-15** (SOL cutoff)
- Fields: patentNumber, datePublished, title, inventors, assignee_organization, source