priority date

基本解释

The priority date is the date when the petition was filed at a Department of Homeland Security (DHS) office or submitted to an Embassy or Consulate abroad.
的優先日期是在請願時提出的在美國國土安全部（DHS）厛或提交到國外大使館或領事館的日期。
The priority date is generally the date when the applicant's relative or employer properly filed the immigrant visa petition on the applicant's behalf with USCIS.
優先日期一般是申請人的親屬或雇主代表申請人正式曏美國移民侷遞交移民簽証申請的日期。
Although, not in itself, enough to monopolise an invention a provisional application will provide an applicant with an all important priority date and patent pending number.
盡琯不在於其本身，一項臨時性申請已足以壟斷一項發明，它仍將曏申請人提供所有重要的優先權日期和專利受理號。

In part for this reason, the U.S. Patent and Trademark Office is likely to see increased numbers of provisional applications, which if done properly can be a cost-effective way to obtain an early priority date for a patent application.
FORBES: March 16, 2013: The United States Transitions To A 'First-Inventor-To-File' Patent System
To date, the Administration has funded increases for Station without major sacrifice to other priority NASA programs.
WHITEHOUSE: Jacob J. Lew Testimony to House Science Committee, 08/06/1998 The White House