First to file and first to invent
| Patent law |
|---|
| Overviews |
| Procedural concepts |
| Patentability requirements and related concepts |
| Other legal requirements |
| By region / country |
| By specific subject matter |
| See also |
|
First to file and first to invent are legal concepts that define who has the right to the grant of a patent for an invention. Since March 16, 2013, after the United States abandoned its "first to invent/document" system, all countries have operated under the "first-to-file" patent priority requirement.