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Mechlorethamine Hydrochloride Patent Expiration

Mechlorethamine Hydrochloride is Used for treating stage IA and IB mycosis fungoides-type cutaneous T-cell lymphoma in patients who have received prior skin-directed therapy. It was first introduced by Recordati Rare Diseases Inc in its drug Mustargen on Approved Prior to Jan 1, 1982. Another drug containing Mechlorethamine Hydrochloride is Valchlor. 2 different companies have introduced drugs containing Mechlorethamine Hydrochloride.


Mechlorethamine Hydrochloride Patents

Given below is the list of patents protecting Mechlorethamine Hydrochloride, 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
Valchlor US7838564 Stabilized compositions of volatile alkylating agents and methods of using thereof Mar 07, 2026 Helsinn
Valchlor US7872050 Stabilized compositions of volatile alkylating agents and methods of using thereof Jul 08, 2029 Helsinn
Valchlor US8450375 Stabilized compositions of volatile alkylating agents and methods of using thereof Mar 07, 2026 Helsinn
Valchlor US8501818 Stabilized compositions of alkylating agents and methods of using same Mar 07, 2026 Helsinn
Valchlor US8501819 Stabilized compositions of volatile alkylating agents and methods of using thereof Mar 07, 2026 Helsinn
Valchlor US9382191 Stabilized compositions of volatile alkylating agents and methods of using thereof Mar 07, 2026 Helsinn


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 Mechlorethamine Hydrochloride's patents.

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

Event Date Patent/Publication
Patent litigations
Payment of Maintenance Fee, 12th Year, Large Entity 22 Jun, 2022 US7872050
Payment of Maintenance Fee, 12th Year, Large Entity 21 Apr, 2022 US7838564
Payment of Maintenance Fee, 8th Year, Large Entity 21 Jan, 2021 US8501818
Payment of Maintenance Fee, 8th Year, Large Entity 21 Jan, 2021 US8501819
Payment of Maintenance Fee, 8th Year, Large Entity 21 Oct, 2020 US8450375
Payment of Maintenance Fee, 8th Year, Large Entity 10 Jul, 2018 US7872050
Payment of Maintenance Fee, 8th Year, Large Entity 15 May, 2018 US7838564
Change in Power of Attorney (May Include Associate POA) 01 Feb, 2017 US7872050
Email Notification 01 Feb, 2017 US7872050
Correspondence Address Change 30 Jan, 2017 US7872050



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