9,670 companies with a portfolio page
Every company with a portfolio page, listed alphabetically. Each page computes that company's US patent terms from USPTO records and shows the work behind every date.Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly)
Largest portfolios
The 50 largest portfolios this site has compiled. Any other company is under its letter below, or found by name in the box above. Click a column heading to sort.
Companies are grouped from ownership conveyances recorded at the USPTO. This index lists the companies with a compiled portfolio page. Every other company with a granted US patent or a published US application has a record page, reachable by search. How this record was built