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.
Lisa Gill, edit... Pfizer's patent protecting Viagra from generic competition expires in April 2020, but Teva Pharmaceuticals USA Inc. will be allowed to launch its generic version in the United States on Dec. 11, 2017. Teva Pharmaceuticals USA is a division of Israeli-based Teva Industries Ltd.ther drugmakers also are dealing with a wave of patent expirations that have hurt their revenue. The patent protecting another erectile dysfunction drug, Eli Lilly and Co.'s Cialis, also expires in 2017. 1  Pfizer to sell Viagra online, in first for Big Pharma: AP.