Last Updated: June 25, 2026

AQNEURSA Drug Patent Profile


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Which patents cover Aqneursa, and when can generic versions of Aqneursa launch?

Aqneursa is a drug marketed by Intrabio and is included in one NDA. There are three patents protecting this drug.

This drug has seventy-two patent family members in thirty-one countries.

The generic ingredient in AQNEURSA is levacetylleucine. One supplier is listed for this compound. Additional details are available on the levacetylleucine profile page.

DrugPatentWatch® Generic Entry Outlook for Aqneursa

Aqneursa will be eligible for patent challenges on September 24, 2028. This date may extended up to six months if a pediatric exclusivity extension is applied to the drug's patents.

By analyzing the patents and regulatory protections it appears that the earliest date for generic entry will be September 24, 2031. This may change due to patent challenges or generic licensing.

There has been one patent litigation case involving the patents protecting this drug, indicating strong interest in generic launch. Recent data indicate that 63% of patent challenges are decided in favor of the generic patent challenger and that 54% of successful patent challengers promptly launch generic drugs.

Indicators of Generic Entry

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Summary for AQNEURSA
International Patents:72
US Patents:3
Applicants:1
NDAs:1
Finished Product Suppliers / Packagers: 1
Patent Applications: 1,540
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for AQNEURSA
What excipients (inactive ingredients) are in AQNEURSA?AQNEURSA excipients list
DailyMed Link:AQNEURSA at DailyMed
DrugPatentWatch® Estimated Loss of Exclusivity (LOE) Date for AQNEURSA
Generic Entry Date for AQNEURSA*:
Constraining patent/regulatory exclusivity:

TREATMENT OF NEUROLOGICAL MANIFESTATIONS OF NIEMANN-PICK DISEASE TYPE C (NPC) IN ADULTS AND PEDIATRIC PATIENTS WEIGHING GREATER THAN OR EQUAL TO 15 KG

NDA:
Dosage:

FOR SUSPENSION;ORAL

*The generic entry opportunity date is the latter of the last compound-claiming patent and the last regulatory exclusivity protection. Many factors can influence early or later generic entry. This date is provided as a rough estimate of generic entry potential and should not be used as an independent source.

US Patents and Regulatory Information for AQNEURSA

AQNEURSA is protected by three US patents and two FDA Regulatory Exclusivities.

Based on analysis by DrugPatentWatch, the earliest date for a generic version of AQNEURSA is ⤷  Start Trial.

This potential generic entry date is based on TREATMENT OF NEUROLOGICAL MANIFESTATIONS OF NIEMANN-PICK DISEASE TYPE C (NPC) IN ADULTS AND PEDIATRIC PATIENTS WEIGHING GREATER THAN OR EQUAL TO 15 KG.

Generics may enter earlier, or later, based on new patent filings, patent extensions, patent invalidation, early generic licensing, generic entry preferences, and other factors.

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Intrabio AQNEURSA levacetylleucine FOR SUSPENSION;ORAL 219132-001 Sep 24, 2024 RX Yes Yes 11,400,067 ⤷  Start Trial ⤷  Start Trial
Intrabio AQNEURSA levacetylleucine FOR SUSPENSION;ORAL 219132-001 Sep 24, 2024 RX Yes Yes ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Intrabio AQNEURSA levacetylleucine FOR SUSPENSION;ORAL 219132-001 Sep 24, 2024 RX Yes Yes 12,433,862 ⤷  Start Trial ⤷  Start Trial
Intrabio AQNEURSA levacetylleucine FOR SUSPENSION;ORAL 219132-001 Sep 24, 2024 RX Yes Yes 12,433,863 ⤷  Start Trial ⤷  Start Trial
Intrabio AQNEURSA levacetylleucine FOR SUSPENSION;ORAL 219132-001 Sep 24, 2024 RX Yes Yes ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Exclusivity Expiration

Supplementary Protection Certificates for AQNEURSA

Patent Number Supplementary Protection Certificate SPC Country SPC Expiration SPC Description
3482754 CA 2026 00020 Denmark ⤷  Start Trial PRODUCT NAME: LEVACETYLLEUCIN; REG. NO/DATE: EU/1/25/1928 20260120
3482754 301377 Netherlands ⤷  Start Trial PRODUCT NAME: LEVACETYLLEUCINE; REGISTRATION NO/DATE: EU/1/25/1928 20260220
3482754 CR 2026 00020 Denmark ⤷  Start Trial PRODUCT NAME: LEVACETYLLEUCIN; REG. NO/DATE: EU/1/25/1928 20260120
3482754 C20260014 Finland ⤷  Start Trial
3482754 PA2026517 Lithuania ⤷  Start Trial PRODUCT NAME: LEVACETILLEUCINAS; REGISTRATION NO/DATE: EU/1/25/1928 20260119
>Patent Number >Supplementary Protection Certificate >SPC Country >SPC Expiration >SPC Description

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Drugs may be covered by multiple patents or regulatory protections. All trademarks and applicant names are the property of their respective owners or licensors. Although great care is taken in the proper and correct provision of this service, thinkBiotech LLC does not accept any responsibility for possible consequences of errors or omissions in the provided data. The data presented herein is for information purposes only. There is no warranty that the data contained herein is error free. We do not provide individual investment advice. This service is not registered with any financial regulatory agency. The information we publish is educational only and based on our opinions plus our models. By using DrugPatentWatch you acknowledge that we do not provide personalized recommendations or advice. thinkBiotech performs no independent verification of facts as provided by public sources nor are attempts made to provide legal or investing advice. Any reliance on data provided herein is done solely at the discretion of the user. Users of this service are advised to seek professional advice and independent confirmation before considering acting on any of the provided information. thinkBiotech LLC reserves the right to amend, extend or withdraw any part or all of the offered service without notice.