Tofersen Patent Expiration

Tofersen is Used for treating amyotrophic lateral sclerosis (ALS) in adult patients with a mutation in the SOD1 gene. It was first introduced by Biogen Ma Inc in its drug Qalsody on Apr 25, 2023.


Tofersen Patents

Given below is the list of patents protecting Tofersen, 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
Qalsody US10385341 Compositions for modulating SOD-1 expression Apr 01, 2035 Biogen Ma
Qalsody US10669546 Compositions for modulating SOD-1 expression Apr 01, 2035 Biogen Ma
Qalsody US10968453 Compositions for modulating SOD-1 expression Apr 01, 2035 Biogen Ma



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 Tofersen's patents.

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

Activity Date Patent Number
Patent litigations
Second letter to regulating agency to determine regulatory review period 22 May, 2024 US10385341
Second letter to regulating agency to determine regulatory review period 22 May, 2024 US10968453
Second letter to regulating agency to determine regulatory review period 22 May, 2024 US10669546
Letter from FDA or Dept of Agriculture re PTE application 06 Feb, 2024 US10669546
Letter from FDA or Dept of Agriculture re PTE application 06 Feb, 2024 US10385341
Letter from FDA or Dept of Agriculture re PTE application 06 Feb, 2024 US10968453
Change in Power of Attorney (May Include Associate POA) 01 Feb, 2024 US10669546
Change in Power of Attorney (May Include Associate POA) 01 Feb, 2024 US10968453
Email Notification 01 Feb, 2024 US10669546
Email Notification 01 Feb, 2024 US10968453


Tofersen's Family Patents

Family Patents

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