Fostemsavir Tromethamine Patent Expiration

Fostemsavir Tromethamine was first introduced by Viiv Healthcare Co in its drug Rukobia on Jul 2, 2020.


Fostemsavir Tromethamine Patents

Given below is the list of patents protecting Fostemsavir Tromethamine, along with the drug name that holds that patent and the company name owning that drug.

Drug Used in Drug Patent Number Drug Patent Title Drug Patent Expiry Drug Owner
Rukobia US7745625 Prodrugs of piperazine and substituted piperidine antiviral agents Nov 19, 2027 Viiv Hlthcare
Rukobia US8168615 Prodrugs of piperazine and substituted piperidine antiviral agents Jul 13, 2029 Viiv Hlthcare
Rukobia US8461333 Salts of prodrugs of piperazine and substituted piperidine antiviral agents Feb 25, 2025 Viiv Hlthcare


A patent's expiry date may change depending upon legal activities going on that patent. Critical activities like abandoning of a patent, term extension of a patent or amendment of its claims can increase or decrease the life of a patent hence affecting its expiry date and in turn affecting the generic launch date of that drug. Tracking these ongoing activities on a patent application helps to keep an eye on the latest developments in the patent process of the drug which can give an idea of how early a drug's generic could be available. The next section provides a list of recent legal activities on Fostemsavir Tromethamine's patents.

Given below is the list recent legal activities going on the following patents of Fostemsavir Tromethamine.

Event Date Patent/Publication
Patent litigations
Patent Term Extension Certificate 11 Mar, 2024 US8168615
Payment of Maintenance Fee, 12th Year, Large Entity 19 Oct, 2023 US8168615
Notice of Final Determination -Eligible 03 Oct, 2023 US8168615
FDA Final Eligibility Letter 10 May, 2023 US8168615
Second letter to regulating agency to determine regulatory review period 16 Feb, 2022 US8168615
Payment of Maintenance Fee, 12th Year, Large Entity 17 Nov, 2021 US7745625
Letter from FDA or Dept of Agriculture re PTE application 01 Mar, 2021 US8168615
Initial letter Re: PTE Application to regulating agency 02 Dec, 2020 US8168615
Payment of Maintenance Fee, 8th Year, Large Entity 28 Sep, 2020 US8461333
Payment of Maintenance Fee, 8th Year, Large Entity 22 Oct, 2019 US8168615



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