Last Updated: October 1, 2026

Details for Patent: 12,257,252


✉ Email this page to a colleague

« Back to Dashboard


Summary for Patent: 12,257,252
Title:Compositions and methods for increasing tetrahydrobiopterin plasma exposure
Abstract:The present invention features compositions including sepiapterin, or a pharmaceutically acceptable salt thereof, and methods for the treatment of BH4-related disorders. In some embodiments, these compositions and methods result in an increase in plasma exposure of BH4.
Inventor(s):Neil Smith, Jonathan Reis
Assignee: PTC Therapeutics MP Inc
Application Number:US17/059,632
Patent Claim Types:
see list of patent claims
Use;

Drugs Protected by US Patent 12,257,252

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Ptc Therap SEPHIENCE sepiapterin POWDER;ORAL 219666-002 Jul 28, 2025 RX Yes Yes ⤷  Start Trial ⤷  Start Trial METHOD OF TREATING HYPERPHENYLALANINEMIA (HPA) IN ADULT AND PEDIATRIC PATIENTS WITH SEPIAPTERIN-RESPONSIVE PHENYLKETONURIA (PKU) BY ADMINISTERING SEPIAPTERIN WITH FOOD ⤷  Start Trial
Ptc Therap SEPHIENCE sepiapterin POWDER;ORAL 219666-001 Jul 28, 2025 RX Yes No ⤷  Start Trial ⤷  Start Trial METHOD OF TREATING HYPERPHENYLALANINEMIA (HPA) IN ADULT AND PEDIATRIC PATIENTS WITH SEPIAPTERIN-RESPONSIVE PHENYLKETONURIA (PKU) BY ADMINISTERING SEPIAPTERIN WITH FOOD ⤷  Start Trial
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Patented / Exclusive Use >Submissiondate

International Family Members for US Patent 12,257,252

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
European Patent Office 3801534 ⤷  Start Trial 301382 Netherlands ⤷  Start Trial
European Patent Office 3801534 ⤷  Start Trial CA 2026 00028 Denmark ⤷  Start Trial
European Patent Office 3801534 ⤷  Start Trial PA2026521 Lithuania ⤷  Start Trial
European Patent Office 3801534 ⤷  Start Trial LUC50053 Luxembourg ⤷  Start Trial
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

Make Better Decisions: Try a trial or see plans & pricing

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.