Last Updated: August 14, 2026

Details for Patent: RE49826


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Summary for Patent: RE49826
Title:Method for the preparation of (4S)-4-(4-cyano-2-methoxyphenyl)-5-ethoxy-2,8-dimethyl-1,4-dihydro-1-6-naphthyridine-3-carboxamide and the purification thereof for use as an active pharmaceutical ingredient
Abstract:The present invention related to a novel and improved process for preparing (4S)-4-(4-cyano-2-methoxyphenyl)-5-ethoxy-2,8-dimethyl-1,4-dihydro-1,6-naphthyridine-3-carboxamide of the formula (I)
Inventor(s):Johannes Platzek
Assignee: Bayer Pharma AG
Application Number:US17/367,066
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent RE49826
Patent Claim Types:
see list of patent claims
Use; Compound; Process;

Drugs Protected by US Patent RE49826

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Bayer Hlthcare KERENDIA finerenone TABLET;ORAL 215341-001 Jul 9, 2021 RX Yes No ⤷  Start Trial ⤷  Start Trial Y ⤷  Start Trial
Bayer Hlthcare KERENDIA finerenone TABLET;ORAL 215341-002 Jul 9, 2021 RX Yes No ⤷  Start Trial ⤷  Start Trial Y ⤷  Start Trial
Bayer Hlthcare KERENDIA finerenone TABLET;ORAL 215341-003 Jul 11, 2025 RX Yes Yes ⤷  Start Trial ⤷  Start Trial Y ⤷  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 RE49826

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Argentina 105774 ⤷  Start Trial
Australia 2016312904 ⤷  Start Trial
Canada 2995905 ⤷  Start Trial
Chile 2018000427 ⤷  Start Trial
China 107849043 ⤷  Start Trial
Colombia 2018001466 ⤷  Start Trial
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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