What are the best free or low-cost online databases to check for prior art before I invest in building my prototype?
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Fan-out diagram
The searches the AI actually ran for this prompt.
SEED QUERY
What are the best free or low-cost online databases to check for prior art before I invest in building my prototype?
1 real search · 1 real-search pass
best free patent prior art search databases Google Patents USPTO Patent Public Search Espacenet WIPO PATENTSCOPE Lens official featuresGoogle ↗
OBSERVED
Badge and edge weight = share of passes that produced the query. Hover a query for its intent and routing format.
Query classes
Google's semantic query class for every sub-query: what kind of answer each search is after, simulated vs real.
Classifying 1 queries…
Searches and sources
ChatGPT1 real searches · gpt-6
best free patent prior art search databases Google Patents USPTO Patent Public Search Espacenet WIPO PATENTSCOPE Lens official features Google ↗
- Search Google Patents · patents.google.com
- Open USPTO Patent Public Search · ppubs.uspto.gov
- USPTO search guidance · uspto.gov
- Search for patents · uspto.gov
- Patent Searching - Patent and Trademark Resource Center (PTRC) · guides.osu.edu
- Home - Patent Searching · guides.library.cornell.edu
- Search Espacenet · worldwide.espacenet.com
- Search WIPO PATENTSCOPE · patentscope.wipo.int
- PATENTSCOPE: Frequently Asked Questions · wipo.int
- Explore The Lens · lens.org
- Search Google Scholar · scholar.google.com
- Search Semantic Scholar · semanticscholar.org
- Search the Wayback Machine · web.archive.org
- Search Global Design Database · designdb.wipo.int
- Patent search - Patents & Trademarks · libguides.library.gatech.edu
- Database Searching · ptrca.org
- Find a Patent and Trademark Resource Center · uspto.gov