Dalfampridine Patent Expiration
Dalfampridine is Used for improving walking in patients with multiple sclerosis. It was first introduced by Merz Pharmaceuticals Llc
Dalfampridine Patents
Given below is the list of patents protecting Dalfampridine, 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 |
|---|---|---|---|---|
| Ampyra | US8007826 | Sustained release aminopyridine composition | May 26, 2027 | Merz |
| Ampyra | US8354437 | Method of using sustained release aminopyridine compositions | Dec 22, 2026 | Merz |
| Ampyra | US8440703 | Methods of using sustained release aminopyridine compositions |
Apr 08, 2025
(Expired) | Merz |
| Ampyra | US8663685 | Sustained release aminopyridine composition |
Jan 18, 2025
(Expired) | Merz |
| Ampyra | US9918973 | Sustained release aminopyridine composition |
Dec 13, 2024
(Expired) | Merz |
| Ampyra | US5540938 | Formulations and their use in the treatment of neurological diseases |
Jul 30, 2018
(Expired) | Merz |
Dalfampridine's Family Patents
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Clinical Trials
Recent Clinical Trials on Dalfampridine:
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 |
|---|---|---|---|---|
| ||||
| Single Dose 4-Aminopyridine for Diagnosing Recurrent Laryngeal Nerve Paralysis Continuity After Trauma | Milton S. Hershey Medical Center | NA |
NOT YET RECRUITING
(Sep 1, 2026)
| PHASE1 |
| Double Dose 4-AP on Functional Recovery After Spinal Cord Injury | Shirley Ryan AbilityLab | NA |
RECRUITING
(Jun 1, 2026)
| PHASE1, PHASE2 |