Polidocanol Patent Expiration

Polidocanol is used for treating varicose veins. It was first introduced by Chemische Fabrik Kreussler & Co. Gmbh in its drug Asclera on Mar 30, 2010. Another drug containing Polidocanol is Varithena. 2 different companies have introduced drugs containing Polidocanol.


Polidocanol Patents

Given below is the list of patents protecting Polidocanol, 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
Varithena US6572873 Generation of therapeutic microfoam May 26, 2020

(Expired)

Provensis
Varithena US6846412 Combination filter assembly Jul 19, 2022

(Expired)

Provensis
Varithena US6942165 Generation of therapeutic microfoam May 26, 2020

(Expired)

Provensis
Varithena US7025290 Generation of therapeutic microfoam May 26, 2020

(Expired)

Provensis
Varithena US7357336 Generation of therapeutic microfoam May 26, 2020

(Expired)

Provensis
Varithena US7604185 Generation of therapeutic microfoam May 26, 2020

(Expired)

Provensis
Varithena US7731986 Therapeutic foam Nov 17, 2024 Provensis
Varithena US7814943 Apparatus and method for dispensing foam Nov 19, 2027 Provensis
Varithena US7842282 Generation of therapeutic microfoam May 26, 2020

(Expired)

Provensis
Varithena US7842283 Generation of therapeutic microfoam May 26, 2020

(Expired)

Provensis
Varithena US8122917 Apparatus and method for dispensing foam Sep 09, 2024 Provensis
Varithena US8323677 Therapeutic foam May 26, 2020

(Expired)

Provensis
Varithena US8734833 Therapeutic foam May 26, 2020

(Expired)

Provensis
Varithena US9480652 Aerosol valve May 12, 2032 Provensis
Varithena USRE38919 Injectable microfoam containing a sclerosing agent Oct 14, 2014

(Expired)

Provensis
Varithena USRE40640 Injectable microfoam containing a sclerosing agent Oct 14, 2016

(Expired)

Provensis


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 Polidocanol's patents.

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

Event Date Patent/Publication
Patent litigations
Maintenance Fee Reminder Mailed 24 Jun, 2024 US9480652
Expire Patent 01 Apr, 2024 US8122917
Maintenance Fee Reminder Mailed 16 Oct, 2023 US8122917
Interim Patent Term Extension Granted 28 Feb, 2023 US7357336
Expire Patent 04 Jul, 2022 US8734833
Payment of Maintenance Fee, 12th Year, Large Entity 18 May, 2022 US7842283
Payment of Maintenance Fee, 12th Year, Large Entity 18 May, 2022 US7842282
Payment of Maintenance Fee, 12th Year, Large Entity 06 Apr, 2022 US7814943
Interim Patent Term Extension Granted 07 Mar, 2022 US7357336
Maintenance Fee Reminder Mailed 17 Jan, 2022 US8734833



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