Dantrolene Sodium Patent Expiration
Dantrolene Sodium is Used for treating and preventing malignant hyperthermia in patients at risk. It was first introduced by Endo Operations Ltd
Dantrolene Sodium Patents
Given below is the list of patents protecting Dantrolene Sodium, 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 |
|---|---|---|---|---|
| Ryanodex | US7758890 | Treatment using dantrolene |
Jun 30, 2025
(Expired) | Eagle Pharms |
| Ryanodex | US8685460 | Treatment using dantrolene |
Feb 15, 2023
(Expired) | Eagle Pharms |
| Ryanodex | US8110225 | Treatment using dantrolene |
Dec 24, 2022
(Expired) | Eagle Pharms |
| Ryanodex | US8604072 | Treatment using dantrolene |
Jul 20, 2022
(Expired) | Eagle Pharms |
| Ryanodex | US9884044 | Treatment using dantrolene |
Jun 13, 2022
(Expired) | Eagle Pharms |
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 Dantrolene Sodium's patents.
Latest Legal Activities on Dantrolene Sodium's Patents
Given below is the list recent legal activities going on the following patents of Dantrolene Sodium.
| Activity | Date | Patent Number |
|---|---|---|
 | ||
| Expire Patent Critical
| 11 Mar, 2024 | US8110225 |
| Maintenance Fee Reminder Mailed Critical
| 25 Sep, 2023 | US8110225 |
| Payment of Maintenance Fee, 12th Yr, Small Entity | 20 Jan, 2022 | US7758890 |
| Payment of Maintenance Fee, 8th Yr, Small Entity | 01 Oct, 2021 | US8685460 |
| Payment of Maintenance Fee, 4th Yr, Small Entity | 06 Aug, 2021 | US9884044 |
| Payment of Maintenance Fee, 8th Yr, Small Entity | 10 Jun, 2021 | US8604072 |
| Payment of Maintenance Fee, 8th Yr, Small Entity | 07 Aug, 2019 | US8110225 |
| Recordation of Patent Grant Mailed Critical
| 06 Feb, 2018 | US9884044 |
| Patent Issue Date Used in PTA Calculation Critical
| 06 Feb, 2018 | US9884044 |
| Payment of Maintenance Fee, 8th Yr, Small Entity | 22 Jan, 2018 | US7758890 |
Dantrolene Sodium's Family Patents
