20 Dec 2019
// FDA
https://www.accessdata.fda.gov/scripts/cder/daf/index.cfm?event=overview.process&ApplNo=208295
23 Aug 2017
// FDA
https://www.pharmacompass.com/pdf/news/fda-confirms-paragraph-iv-patent-challenge-of-entereg-alvimopan-capsules-1503542736.pdf