Tasimelteon Patent Expiration
Tasimelteon is Used for treating nighttime sleep disturbances in Smith-Magenis syndrome and non-24-hour sleep-wake disorder with tasimelteon. It was first introduced by Vanda Pharmaceuticals Inc
Tasimelteon Patents
Given below is the list of patents protecting Tasimelteon, 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 |
|---|---|---|---|---|
| Hetlioz | US11759446 | Liquid tasimelteon formulations and methods of use thereof | Feb 21, 2041 | Vanda Pharms Inc |
| Hetlioz Lq | US11759446 | Liquid tasimelteon formulations and methods of use thereof | Feb 21, 2041 | Vanda Pharms Inc |
| Hetlioz Lq | US11202770 | Liquid tasimelteon formulations and methods of use thereof | Dec 11, 2040 | Vanda Pharms Inc |
| Hetlioz Lq | US12447141 | Liquid Tasimelteon Formulations And Methods Of Use Thereof | Dec 11, 2040 | Vanda Pharms Inc |
| Hetlioz | US10179119 | Method of treatment | Aug 29, 2035 | Vanda Pharms Inc |
| Hetlioz | US11266622 | Method of treatment | Aug 29, 2035 | Vanda Pharms Inc |
| Hetlioz Lq | US10179119 | Method of treatment | Aug 29, 2035 | Vanda Pharms Inc |
| Hetlioz Lq | US11266622 | Method of treatment | Aug 29, 2035 | Vanda Pharms Inc |
| Hetlioz | US10376487 | Method of treatment | Jul 27, 2035 | Vanda Pharms Inc |
| Hetlioz Lq | US10376487 | Method of treatment | Jul 27, 2035 | Vanda Pharms Inc |
| Hetlioz | US10071977 | Highly purifid pharmaceutical grade tasimelteon | Feb 12, 2035 | Vanda Pharms Inc |
| Hetlioz | US10829465 | Highly purified pharmaceutical grade tasimelteon | Feb 12, 2035 | Vanda Pharms Inc |
| Hetlioz | US11566011 | Highly purified pharmaceutical grade tasimelteon | Feb 12, 2035 | Vanda Pharms Inc |
| Hetlioz | US11760740 | Highly purified pharmaceutical grade tasimelteon | Feb 12, 2035 | Vanda Pharms Inc |
| Hetlioz | US12049457 | Highly purified pharmaceutical grade tasimelteon | Feb 12, 2035 | Vanda Pharms Inc |
| Hetlioz Lq | US10071977 | Highly purifid pharmaceutical grade tasimelteon | Feb 12, 2035 | Vanda Pharms Inc |
| Hetlioz Lq | US10829465 | Highly purified pharmaceutical grade tasimelteon | Feb 12, 2035 | Vanda Pharms Inc |
| Hetlioz Lq | US11566011 | Highly purified pharmaceutical grade tasimelteon | Feb 12, 2035 | Vanda Pharms Inc |
| Hetlioz Lq | US11760740 | Highly purified pharmaceutical grade tasimelteon | Feb 12, 2035 | Vanda Pharms Inc |
| Hetlioz Lq | US12049457 | Highly purified pharmaceutical grade tasimelteon | Feb 12, 2035 | Vanda Pharms Inc |
| Hetlioz | US10610511 | Method of treatment | Oct 10, 2034 | Vanda Pharms Inc |
| Hetlioz | US11141400 | Method of treatment | Oct 10, 2034 | Vanda Pharms Inc |
| Hetlioz | US11786502 | Method of treatment | Oct 10, 2034 | Vanda Pharms Inc |
| Hetlioz Lq | US10610511 | Method of treatment | Oct 10, 2034 | Vanda Pharms Inc |
| Hetlioz Lq | US11141400 | Method of treatment | Oct 10, 2034 | Vanda Pharms Inc |
| Hetlioz Lq | US11786502 | Method of treatment | Oct 10, 2034 | Vanda Pharms Inc |
| Hetlioz | US9730910 | Treatment of circadian rhythm disorders | May 17, 2034 | Vanda Pharms Inc |
| Hetlioz Lq | US9730910 | Treatment of circadian rhythm disorders | May 17, 2034 | Vanda Pharms Inc |
| Hetlioz | US11918556 | Treatment of circadian rhythm disorders | Apr 07, 2033 | Vanda Pharms Inc |
| Hetlioz Lq | US11918556 | Treatment of circadian rhythm disorders | Apr 07, 2033 | Vanda Pharms Inc |
| Hetlioz | US10149829 | Treatment of circadian rhythm disorders | Jan 25, 2033 | Vanda Pharms Inc |
| Hetlioz | US10449176 | Treatment of circadian rhythm disorders | Jan 25, 2033 | Vanda Pharms Inc |
| Hetlioz | US10610510 | Treatment of circadian rhythm disorders | Jan 25, 2033 | Vanda Pharms Inc |
| Hetlioz | US10945988 | Treatment of circadian rhythm disorders | Jan 25, 2033 | Vanda Pharms Inc |
| Hetlioz | US10980770 | Treatment of circadian rhythm disorders | Jan 25, 2033 | Vanda Pharms Inc |
| Hetlioz | US11285129 | Treatment of circadian rhythm disorders | Jan 25, 2033 | Vanda Pharms Inc |
| Hetlioz | US11633377 | Treatment of circadian rhythm disorders | Jan 25, 2033 | Vanda Pharms Inc |
| Hetlioz | US11826339 | Treatment of circadian rhythm disorders | Jan 25, 2033 | Vanda Pharms Inc |
| Hetlioz | US11833130 | Treatment of circadian rhythm disorders | Jan 25, 2033 | Vanda Pharms Inc |
| Hetlioz | US11850229 | Treatment of circadian rhythm disorders | Jan 25, 2033 | Vanda Pharms Inc |
| Hetlioz | US11918557 | Treatment of circadian rhythm disorders | Jan 25, 2033 | Vanda Pharms Inc |
| Hetlioz | US12201604 | Treatment of circadian rhythm disorders | Jan 25, 2033 | Vanda Pharms Inc |
| Hetlioz | US8785492 | Treatment of circadian rhythm disorders | Jan 25, 2033 | Vanda Pharms Inc |
| Hetlioz | US9060995 | Treatment of circadian rhythm disorders | Jan 25, 2033 | Vanda Pharms Inc |
| Hetlioz | US9539234 | Treatment of circadian rhythm disorders | Jan 25, 2033 | Vanda Pharms Inc |
| Hetlioz | US9549913 | Treatment of circadian rhythm disorders | Jan 25, 2033 | Vanda Pharms Inc |
| Hetlioz | US9855241 | Treatment of circadian rhythm disorders | Jan 25, 2033 | Vanda Pharms Inc |
| Hetlioz | USRE46604 | Treatment of circadian rhythm disorders | Jan 25, 2033 | Vanda Pharms Inc |
| Hetlioz Lq | US10149829 | Treatment of circadian rhythm disorders | Jan 25, 2033 | Vanda Pharms Inc |
| Hetlioz Lq | US10610510 | Treatment of circadian rhythm disorders | Jan 25, 2033 | Vanda Pharms Inc |
| Hetlioz Lq | US10980770 | Treatment of circadian rhythm disorders | Jan 25, 2033 | Vanda Pharms Inc |
| Hetlioz Lq | US11285129 | Treatment of circadian rhythm disorders | Jan 25, 2033 | Vanda Pharms Inc |
| Hetlioz Lq | US11633377 | Treatment of circadian rhythm disorders | Jan 25, 2033 | Vanda Pharms Inc |
| Hetlioz Lq | US11826339 | Treatment of circadian rhythm disorders | Jan 25, 2033 | Vanda Pharms Inc |
| Hetlioz Lq | US11833130 | Treatment of circadian rhythm disorders | Jan 25, 2033 | Vanda Pharms Inc |
| Hetlioz Lq | US11850229 | Treatment of circadian rhythm disorders | Jan 25, 2033 | Vanda Pharms Inc |
| Hetlioz Lq | US11918557 | Treatment of circadian rhythm disorders | Jan 25, 2033 | Vanda Pharms Inc |
| Hetlioz Lq | US12201604 | Treatment of circadian rhythm disorders | Jan 25, 2033 | Vanda Pharms Inc |
| Hetlioz Lq | US9539234 | Treatment of circadian rhythm disorders | Jan 25, 2033 | Vanda Pharms Inc |
| Hetlioz | US5856529 | Benzofuran and dihydrobenzofuran melatonergic agents |
Dec 09, 2022
(Expired) | Vanda Pharms Inc |
| Hetlioz Lq | US5856529 | Benzofuran and dihydrobenzofuran melatonergic agents |
Dec 09, 2022
(Expired) | Vanda Pharms Inc |
Tasimelteon's Family Patents
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Clinical Trials
Recent Clinical Trials on Tasimelteon:
Sometimes companies keep conducting clinical trials even after the drug's approval to discover new formulations, methods of use, or new treatment indications, so they could file for additional patents or receive regulatory exclusivity extensions, such as pediatric exclusivity, potentially delaying generic competition. Based on these recent clinical trials, generic companies need to consider the potential for new intellectual property or regulatory hurdles. These strategic moves by the drug owner might delay generic substitution or lead to additional sales of the brand drug, even after patent expiry.
| Title | Lead Sponsor | Collaborators | Status | Phases |
|---|---|---|---|---|
| ||||
| Evaluating the Effects of Tasimelteon vs. Placebo in Delayed Sleep-Wake Phase Disorder (DSWPD) | Vanda Pharmaceuticals | NA |
ACTIVE NOT RECRUITING
(Jul 1, 2026)
| PHASE3 |
| Evaluating the Effects of Tasimelteon vs. Placebo in Treating Pediatric Insomnia | Vanda Pharmaceuticals | NA |
RECRUITING
(Jun 1, 2026)
| PHASE3 |