In Agile, you are supposed to ship product on a regular cadence. All features are added to a product backlog, divided into small projects that fit within a sprint, and then prioritized. The backlog is just a way to keep track of all of the ideas people have, requests from customers, major bugs and other things.
The first patent for Pristiq is set to expire in February 2022. This is the earliest predictable date that a generic version of the drug could become available. However, other circumstances could come up to extend or shorten the exclusivity period.
1 To stay in force for the entire 20 year term, utility patent owners must pay three maintenance fees. 2  If one of those fees is not paid then the patent will be seen as expired and no longer enforceable. 3  Most patentees do not pay all three fees-thus most patents expire before completion of the 20 year term.