Last Updated: August 12, 2026

TRI-NORINYL 28-DAY Drug Patent Profile


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When do Tri-norinyl 28-day patents expire, and what generic alternatives are available?

Tri-norinyl 28-day is a drug marketed by Dr Reddys Labs Sa and is included in one NDA.

The generic ingredient in TRI-NORINYL 28-DAY is ethinyl estradiol; norethindrone. There are twenty-six drug master file entries for this compound. Fourteen suppliers are listed for this compound. Additional details are available on the ethinyl estradiol; norethindrone profile page.

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Summary for TRI-NORINYL 28-DAY

US Patents and Regulatory Information for TRI-NORINYL 28-DAY

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Dr Reddys Labs Sa TRI-NORINYL 28-DAY ethinyl estradiol; norethindrone TABLET;ORAL-28 018977-002 Apr 13, 1984 AB 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

International Patents for TRI-NORINYL 28-DAY

See the table below for patents covering TRI-NORINYL 28-DAY around the world.

Country Patent Number Title Estimated Expiration
Australia 560922 ⤷  Start Trial
Australia 8697682 ⤷  Start Trial
Canada 1198057 METHODE DE CONTRACEPTION PAR ADMINISTRATION DE PROGESTOGENE (METHOD OF CONTRACEPTION USING PEAK PROGESTOGEN DOSAGE) ⤷  Start Trial
Germany 3229612 ⤷  Start Trial
United Kingdom 2104779 METHOD OF CONTRACEPTION AND PHARMACEUTICAL PACKAGE THEREFOR ⤷  Start Trial
>Country >Patent Number >Title >Estimated Expiration

Supplementary Protection Certificates for TRI-NORINYL 28-DAY

Patent Number Supplementary Protection Certificate SPC Country SPC Expiration SPC Description
0136011 2000C/027 Belgium ⤷  Start Trial PRODUCT NAME: ETHINYLESTRADIOLUM / NORETHISTERONI ACETAS; NAT. REGISTRATION NO/DATE: 19 IS 106 F3 20000911; FIRST REGISTRATION: NL RVG 23909 19991124
0398460 C300221 Netherlands ⤷  Start Trial PRODUCT NAME: DROSPIRENON EN ETHINYLESTRADIOL; REGISTRATION NO/DATE: RVG 23827 20000307
1214076 C01214076/01 Switzerland ⤷  Start Trial PRODUCT NAME: DROSPIRENONE + ETHINYLESTRADIOL; REGISTRATION NUMBER/DATE: SWISSMEDIC 57946 13.06.2008
1380301 CA 2009 00017 Denmark ⤷  Start Trial PRODUCT NAME: ETHINYLESTRADIOL (SOM BETADEXCLATHRAT) OG DROSPIRENON; NAT. REG. NO/DATE: 42417 (DK) 20080619; FIRST REG. NO/DATE: NL 33842 20070629
1453521 122015000093 Germany ⤷  Start Trial PRODUCT NAME: LEVONORGESTREL UND ETHINYLESTRADIOL; NAT. REGISTRATION NO/DATE: 87675.00.00 20150720; FIRST REGISTRATION: SLOWAKEI 17/0017/15-S 20150129
>Patent Number >Supplementary Protection Certificate >SPC Country >SPC Expiration >SPC Description

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