Last Updated: September 24, 2026

PRELAY Drug Patent Profile


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When do Prelay patents expire, and what generic alternatives are available?

Prelay is a drug marketed by Sankyo and is included in one NDA.

The generic ingredient in PRELAY is troglitazone. There is one drug master file entry for this compound. Additional details are available on the troglitazone profile page.

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Summary for PRELAY
US Patents:0
Applicants:1
NDAs:1
Raw Ingredient (Bulk) Api Vendors: 1
Patent Applications: 4,892
DailyMed Link:PRELAY at DailyMed

US Patents and Regulatory Information for PRELAY

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Sankyo PRELAY troglitazone TABLET;ORAL 020719-001 Jan 29, 1997 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Sankyo PRELAY troglitazone TABLET;ORAL 020719-003 Aug 4, 1997 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Sankyo PRELAY troglitazone TABLET;ORAL 020719-002 Jan 29, 1997 DISCN No No ⤷  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

Expired US Patents for PRELAY

Applicant Tradename Generic Name Dosage NDA Approval Date Patent No. Patent Expiration
Sankyo PRELAY troglitazone TABLET;ORAL 020719-002 Jan 29, 1997 5,602,133 ⤷  Start Trial
Sankyo PRELAY troglitazone TABLET;ORAL 020719-003 Aug 4, 1997 5,859,037 ⤷  Start Trial
Sankyo PRELAY troglitazone TABLET;ORAL 020719-001 Jan 29, 1997 4,572,912 ⤷  Start Trial
Sankyo PRELAY troglitazone TABLET;ORAL 020719-002 Jan 29, 1997 6,046,202 ⤷  Start Trial
Sankyo PRELAY troglitazone TABLET;ORAL 020719-001 Jan 29, 1997 6,046,202 ⤷  Start Trial
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >Patent No. >Patent Expiration

International Patents for PRELAY

See the table below for patents covering PRELAY around the world.

Country Patent Number Title Estimated Expiration
Austria 33838 ⤷  Start Trial
Australia 3255984 ⤷  Start Trial
Australia 570067 ⤷  Start Trial
Canada 1263395 COMPOSES A BASE DE [5-(4-CHROMAN-2-YLALCOXY) BENZYL]-THIAZOLIDINE ([5-(4-CHROMAN-2-YLALKOXY)BENZYL]-THIAZOLIDINE COMPOUNDS) ⤷  Start Trial
Germany 3470742 ⤷  Start Trial
>Country >Patent Number >Title >Estimated Expiration

Supplementary Protection Certificates for PRELAY

Patent Number Supplementary Protection Certificate SPC Country SPC Expiration SPC Description
0139421 SPC/GB97/084 United Kingdom ⤷  Start Trial PRODUCT NAME: TROGLITAZONE, OPTIONALLY IN THE FORM OF A PHARMACEUTICALLY ACCEPTABLE SALT; REGISTERED: UK 10949/0277 19970729; UK 10949/0278 19970729; UK 10949/0279 19970729; UK 06384/0005 19970729; UK 06384/0006 19970729; UK 06384/0007 19970729
>Patent Number >Supplementary Protection Certificate >SPC Country >SPC Expiration >SPC Description

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