A public registry of inventions that nobody can patent.
Publish a technical disclosure with a provable date. Once public, it can be cited as prior art against later patent applications. Free to publish, free to search.
Why people publish here
Stop others patenting your ideaKeep the freedom to use your invention without paying for a patent.
Create prior art in your fieldPublish solutions and variants before anyone patents them.
Give your invention to the worldMake sure nobody can lock it up with a patent.
Open hardware, research, companiesKeep shared designs, research details and unpatented ideas free.
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How it works
01
Describe your invention
A guided form, in any language, with an English title and summary. Every word and drawing is yours; a completeness check points out gaps.
02
It goes public with a date
After review, it gets a permanent number. Independent timestamps and an Internet Archive copy prove what was published and when.
03
Get your certificate
A Certificate of Publication that anyone can check online in seconds.
Publishing an invention generally means nobody can patent it later, including you. Open Prior Art is not a patent office, and publication grants no rights. The registry is in public beta: every submission is reviewed by a person before it is published.