Last Updated: July 17, 2026

KISQALI FEMARA CO-PACK (COPACKAGED) Drug Patent Profile


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Which patents cover Kisqali Femara Co-pack (copackaged), and when can generic versions of Kisqali Femara Co-pack (copackaged) launch?

Kisqali Femara Co-pack (copackaged) is a drug marketed by Novartis and is included in one NDA. There are eleven patents protecting this drug and one Paragraph IV challenge.

This drug has two hundred and thirty-six patent family members in fifty-four countries.

The generic ingredient in KISQALI FEMARA CO-PACK (COPACKAGED) is letrozole; ribociclib succinate. There are twenty-four drug master file entries for this compound. One supplier is listed for this compound. Additional details are available on the letrozole; ribociclib succinate profile page.

DrugPatentWatch® Generic Entry Outlook for Kisqali Femara Co-pack (copackaged)

Kisqali Femara Co-pack (copackaged) was eligible for patent challenges on March 13, 2021.

By analyzing the patents and regulatory protections it appears that the earliest date for generic entry will be October 14, 2036. This may change due to patent challenges or generic licensing.

There have been seven patent litigation cases 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 KISQALI FEMARA CO-PACK (COPACKAGED)
DrugPatentWatch® Estimated Loss of Exclusivity (LOE) Date for KISQALI FEMARA CO-PACK (COPACKAGED)
Generic Entry Date for KISQALI FEMARA CO-PACK (COPACKAGED)*:
Constraining patent/regulatory exclusivity:
NDA:
Dosage:

TABLET, TABLET;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.

Paragraph IV (Patent) Challenges for KISQALI FEMARA CO-PACK (COPACKAGED)
Tradename Dosage Ingredient Strength NDA ANDAs Submitted Submissiondate
KISQALI FEMARA CO-PACK (COPACKAGED) Tablets letrozole; ribociclib succinate 200 mg and 2.5 mg 209935 4 2021-03-15

US Patents and Regulatory Information for KISQALI FEMARA CO-PACK (COPACKAGED)

KISQALI FEMARA CO-PACK (COPACKAGED) is protected by eleven US patents and two FDA Regulatory Exclusivities.

Based on analysis by DrugPatentWatch, the earliest date for a generic version of KISQALI FEMARA CO-PACK (COPACKAGED) is ⤷  Start Trial.

This potential generic entry date is based on patent 10,799,506.

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
Novartis KISQALI FEMARA CO-PACK (COPACKAGED) letrozole; ribociclib succinate TABLET;ORAL 209935-001 May 4, 2017 RX Yes Yes 8,415,355*PED ⤷  Start Trial Y ⤷  Start Trial
Novartis KISQALI FEMARA CO-PACK (COPACKAGED) letrozole; ribociclib succinate TABLET;ORAL 209935-001 May 4, 2017 RX Yes Yes 9,868,739*PED ⤷  Start Trial Y ⤷  Start Trial
Novartis KISQALI FEMARA CO-PACK (COPACKAGED) letrozole; ribociclib succinate TABLET;ORAL 209935-001 May 4, 2017 RX Yes Yes 8,962,630*PED ⤷  Start Trial Y ⤷  Start Trial
Novartis KISQALI FEMARA CO-PACK (COPACKAGED) letrozole; ribociclib succinate TABLET;ORAL 209935-001 May 4, 2017 RX Yes Yes ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Novartis KISQALI FEMARA CO-PACK (COPACKAGED) letrozole; ribociclib succinate TABLET;ORAL 209935-001 May 4, 2017 RX Yes Yes 10,799,506*PED ⤷  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. >Exclusivity Expiration

International Patents for KISQALI FEMARA CO-PACK (COPACKAGED)

When does loss-of-exclusivity occur for KISQALI FEMARA CO-PACK (COPACKAGED)?

Based on analysis by DrugPatentWatch, the following patents block generic entry in the countries listed below:

Argentina

Patent: 4257
Estimated Expiration: ⤷  Start Trial

Australia

Patent: 16248017
Estimated Expiration: ⤷  Start Trial

Patent: 19201929
Estimated Expiration: ⤷  Start Trial

Patent: 20250190
Estimated Expiration: ⤷  Start Trial

Patent: 22215155
Estimated Expiration: ⤷  Start Trial

Patent: 24227794
Estimated Expiration: ⤷  Start Trial

Brazil

Patent: 2017021283
Estimated Expiration: ⤷  Start Trial

Canada

Patent: 82425
Estimated Expiration: ⤷  Start Trial

Chile

Patent: 17002593
Estimated Expiration: ⤷  Start Trial

China

Patent: 7530292
Estimated Expiration: ⤷  Start Trial

Patent: 5554257
Estimated Expiration: ⤷  Start Trial

Colombia

Patent: 17010510
Estimated Expiration: ⤷  Start Trial

Croatia

Patent: 0230053
Estimated Expiration: ⤷  Start Trial

Patent: 0260123
Estimated Expiration: ⤷  Start Trial

Denmark

Patent: 83058
Estimated Expiration: ⤷  Start Trial

Patent: 97530
Estimated Expiration: ⤷  Start Trial

Ecuador

Patent: 17075052
Estimated Expiration: ⤷  Start Trial

Eurasian Patent Organization

Patent: 1792290
Estimated Expiration: ⤷  Start Trial

European Patent Office

Patent: 83058
Estimated Expiration: ⤷  Start Trial

Patent: 97530
Estimated Expiration: ⤷  Start Trial

Patent: 20458
Estimated Expiration: ⤷  Start Trial

Finland

Patent: 83058
Estimated Expiration: ⤷  Start Trial

Patent: 97530
Estimated Expiration: ⤷  Start Trial

Hungary

Patent: 61213
Estimated Expiration: ⤷  Start Trial

Japan

Patent: 18514523
Estimated Expiration: ⤷  Start Trial

Lithuania

Patent: 97530
Estimated Expiration: ⤷  Start Trial

Mexico

Patent: 17013350
Estimated Expiration: ⤷  Start Trial

Peru

Patent: 180035
Estimated Expiration: ⤷  Start Trial

Philippines

Patent: 017501820
Estimated Expiration: ⤷  Start Trial

Poland

Patent: 83058
Estimated Expiration: ⤷  Start Trial

Patent: 97530
Estimated Expiration: ⤷  Start Trial

Portugal

Patent: 83058
Estimated Expiration: ⤷  Start Trial

Patent: 97530
Estimated Expiration: ⤷  Start Trial

Serbia

Patent: 697
Estimated Expiration: ⤷  Start Trial

Singapore

Patent: 201708084P
Estimated Expiration: ⤷  Start Trial

Slovenia

Patent: 83058
Estimated Expiration: ⤷  Start Trial

South Korea

Patent: 2750931
Estimated Expiration: ⤷  Start Trial

Patent: 170137101
Estimated Expiration: ⤷  Start Trial

Patent: 250009572
Estimated Expiration: ⤷  Start Trial

Spain

Patent: 38261
Estimated Expiration: ⤷  Start Trial

Taiwan

Patent: 1642864
Estimated Expiration: ⤷  Start Trial

Tunisia

Patent: 17000422
Estimated Expiration: ⤷  Start Trial

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

See the table below for additional patents covering KISQALI FEMARA CO-PACK (COPACKAGED) around the world.

Country Patent Number Title Estimated Expiration
Argentina 104257 ⤷  Start Trial
Australia 2016248017 ⤷  Start Trial
Australia 2019201929 ⤷  Start Trial
Australia 2020250190 ⤷  Start Trial
Australia 2022215155 ⤷  Start Trial
>Country >Patent Number >Title >Estimated Expiration

Supplementary Protection Certificates for KISQALI FEMARA CO-PACK (COPACKAGED)

Patent Number Supplementary Protection Certificate SPC Country SPC Expiration SPC Description
0236940 97C0053 Belgium ⤷  Start Trial PRODUCT NAME: LETROZOLE; NAT. REGISTRATION NO/DATE: 206 IS 241 F 3 19970616; FIRST REGISTRATION: FR 341 474.2 1996072
2331547 300909 Netherlands ⤷  Start Trial PRODUCT NAME: RIBOCICLIB, DESGEWENST IN DE VORM VAN EEN FARMACEUTISCH AANVAARDBAAR ZOUT; REGISTRATION NO/DATE: EU/1/17/1221 20170824
2331547 PA2017039 Lithuania ⤷  Start Trial PRODUCT NAME: RIBOCIKLIBAS ARBA JO FARMACINIU POZIURIU PRIIMTINA DRUSKA; REGISTRATION NO/DATE: EU/1/17/1221 20170822
2331547 CR 2017 00060 Denmark ⤷  Start Trial PRODUCT NAME: RIBOCICLIB ELLER ET FARMACEUTISK ACCEPTABELT SALT DERAF; REG. NO/DATE: EU/1/17/1221 20170824
2331547 122017000102 Germany ⤷  Start Trial PRODUCT NAME: RIBOCICLIB ODER EIN PHARMAZEUTISCH ANNEHMBARES SALZ DAVON.; AUTHORISATION NO/DATE: EU/1/17/1221 20170822
>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.