You must file a provisional patent application if your invention is still in the development stage. It allows you to secure a priority date for your application. You get a 12 month period to file a complete application from the date of filing the application. You need not describe everything about the invention; just a[…]
Priority Claiming in Patent Application: Priority Claiming refers to cross-referencing to related applications, such as any patent applications from which priority is claimed, including any sister applications, such as divisional applications. Generally, these cross-references are included in the “Cross-Reference” section of the patent application. Priority Claiming in Patent Application According to laws or guidelines of[…]