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Search Expired Patents

You describe what you want to do and we send a query to multiple databases. AI in the background generates keywords and expands the search.

Describe what you are looking for as precisely as possible. State problem + use + limitations (price, material, no electricity, portable…). The more specific the description, the better the results.
0/800
Optional. If you leave this blank, the AI will suggest its own keywords in the background.
Advanced filters
“Dormant” = uncommercialized/neglected; “Soon-to-expire” = soon to expire (1/6/12/36 months).
Name of company.
Name of inventor.
Enter the IPC/CPC code if you know it.
On MVP, you can only filter databases that you already support.
It will start searching and gradually publish the results.
Tip: On each engine, refine by legal status filters (e.g., lapse/expired) and by date. Results and operators vary by provider.
Soon to expire? Try adding year math like expires 2026 or filter by filing dates. For precise expiry you’ll need per‑jurisdiction rules.
Databazes: GooglePatents, Espacent, WIPO Patentscope, Lens