Phentermine Hydrochloride; Topiramate is used for managing weight in individuals with obesity or overweight-related comorbidities. It was first introduced by Vivus Llc in its drug Qsymia on Jul 17, 2012. 2 different companies have introduced drugs containing Phentermine Hydrochloride; Topiramate.

Phentermine Hydrochloride; Topiramate Patents

Given below is the list of patents protecting Phentermine Hydrochloride; Topiramate, 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
Qsymia	US6071537	Anticonvulsant derivatives useful in treating obesity	Jun 23, 2017 (Expired)	Vivus Llc
Qsymia	US7056890	Combination therapy for effecting weight loss and treating obesity	Jun 14, 2020 (Expired)	Vivus Llc
Qsymia	US7553818	Combination therapy for effecting weight loss and treating obesity	Jun 14, 2020 (Expired)	Vivus Llc
Qsymia	US7659256	Combination therapy for effecting weight loss and treating obesity	Jun 14, 2020 (Expired)	Vivus Llc
Qsymia	US7674776	Combination therapy for effecting weight loss and treating obesity	Jun 14, 2020 (Expired)	Vivus Llc
Qsymia	US8580298	Low dose topiramate/phentermine composition and methods of use thereof	May 15, 2029	Vivus Llc
Qsymia	US8580299	Escalating dosing regimen for effecting weight loss and treating obesity	Jun 14, 2029	Vivus Llc
Qsymia	US8895057	Escalating dosing regimen for effecting weight loss and treating obesity	Jun 09, 2028	Vivus Llc
Qsymia	US8895058	Low dose topiramate/phentermine composition and methods of use thereof	Jun 09, 2028	Vivus Llc
Qsymia	US9011905	Low dose topiramate/phentermine composition and methods of use thereof	Jun 09, 2028	Vivus Llc
Qsymia	US9011906	Escalating dosing regimen for effecting weight loss and treating obesity	Jun 09, 2028	Vivus Llc

Add above patents to watchlist

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 Phentermine Hydrochloride; Topiramate's patents.

Latest Legal Activities on Phentermine Hydrochloride; Topiramate's Patents

Given below is the list recent legal activities going on the following patents of Phentermine Hydrochloride; Topiramate.

Event	Date	Patent/Publication
Today's Critical Events
Payment of Maintenance Fee, 8th Year, Large Entity	05 Oct, 2022	US9011905(Litigated)
Payment of Maintenance Fee, 8th Year, Large Entity	05 Oct, 2022	US9011906(Litigated)
Payment of Maintenance Fee, 8th Year, Large Entity	11 May, 2022	US8895058(Litigated)
Payment of Maintenance Fee, 8th Year, Large Entity	11 May, 2022	US8895057(Litigated)
Expire Patent	11 Apr, 2022	US7674776(Litigated)
Maintenance Fee Reminder Mailed	25 Oct, 2021	US7674776(Litigated)
Expire Patent	02 Aug, 2021	US7553818(Litigated)
Payment of Maintenance Fee, 8th Year, Large Entity	28 Apr, 2021	US8580299(Litigated)
Payment of Maintenance Fee, 8th Year, Large Entity	28 Apr, 2021	US8580298(Litigated)
Maintenance Fee Reminder Mailed	15 Feb, 2021	US7553818(Litigated)

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