A priority date is the date that USCIS considers an individual to have officially declared their intent to apply for permanent residency. Priority dates determine one's place in line for a green card, and can be found on either the I-130 or I-140 receipt notice.
A priority claim is a helpful, and often critical, way to link a later-filed patent application to an earlier-filed patent application. Known as a priority application, the earlier-filed application must generally have common subject matter and common inventorship in order for a priority claim to be made.
In patent law, industrial design law, and trademark law, a priority right or right of priority is a time-limited right, triggered by the first filing of an application for a patent, an industrial design or a trademark respectively.
The date of Patent is the date of filing the application for patent, accompanied either by provisional or complete specification. In case of a convention or PCT application the priority date is taken as the date of Patent.
The filing date is the date when a patent application is first filed at a patent office. The priority date, sometimes called the “effective filing date”, is the date used to establish the novelty and/or obviousness of a particular invention relative to other art.
Where only a single patent application is involved, the priority date would obviously be the filing date of the sole application. If an applicant has filed a number of related patent applications, the priority date would be the filing date of the earliest patent filing that first disclosed the invention.
Priority date refers to the earliest filing date in a family of patent applications. If the earliest-filed patent application for a particular invention was a provisional application, then the filing date of the provisional is your priority date.