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Last Updated: November 12, 2024

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DIFICID Drug Patent Profile


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

Dificid is a drug marketed by Cubist Pharms Llc and is included in two NDAs. There are six patents protecting this drug and one Paragraph IV challenge.

This drug has one hundred and fifty-eight patent family members in thirty-six countries.

The generic ingredient in DIFICID is fidaxomicin. There are two drug master file entries for this compound. One supplier is listed for this compound. Additional details are available on the fidaxomicin profile page.

DrugPatentWatch® Generic Entry Outlook for Dificid

Dificid was eligible for patent challenges on May 27, 2015.

There have been three 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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Drug patent expirations by year for DIFICID
Drug Prices for DIFICID

See drug prices for DIFICID

Recent Clinical Trials for DIFICID

Identify potential brand extensions & 505(b)(2) entrants

SponsorPhase
University of AlbertaPhase 2
McMaster UniversityPhase 3
Vancouver Island Health AuthorityPhase 3

See all DIFICID clinical trials

Pharmacology for DIFICID
Paragraph IV (Patent) Challenges for DIFICID
Tradename Dosage Ingredient Strength NDA ANDAs Submitted Submissiondate
DIFICID Tablets fidaxomicin 200 mg 201699 1 2015-05-27

US Patents and Regulatory Information for DIFICID

DIFICID is protected by six US patents and one FDA Regulatory Exclusivity.

Patents protecting DIFICID

Polymorphic crystalline forms of tiacumicin B
Patent Number: ⤷  Sign Up
Patent Expiration: ⤷  Sign Up

Macrolide polymorphs, compositions comprising such polymorphs, and methods of use and manufacture thereof
Patent Number: ⤷  Sign Up
Patent Expiration: ⤷  Sign Up

18-membered macrocycles and analogs thereof
Patent Number: ⤷  Sign Up
Patent Expiration: ⤷  Sign Up

18-membered macrocycles and analogs thereof
Patent Number: ⤷  Sign Up
Patent Expiration: ⤷  Sign Up

Macrocyclic polymorphs, compositions comprising such polymorphs, and methods of use and manufacture thereof
Patent Number: ⤷  Sign Up
Patent Expiration: ⤷  Sign Up

Composition of tiacumicin compounds
Patent Number: ⤷  Sign Up
Patent Expiration: ⤷  Sign Up

FDA Regulatory Exclusivity protecting DIFICID

PEDIATRIC PATIENTS AGED 6 MONTHS AND OLDER FOR THE TREATMENT OF C. DIFFICILE-ASSOCIATED DIARRHEA (CDAD)
Exclusivity Expiration: ⤷  Sign Up

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Cubist Pharms Llc DIFICID fidaxomicin FOR SUSPENSION;ORAL 213138-001 Jan 24, 2020 RX Yes Yes ⤷  Sign Up ⤷  Sign Up Y ⤷  Sign Up
Cubist Pharms Llc DIFICID fidaxomicin FOR SUSPENSION;ORAL 213138-001 Jan 24, 2020 RX Yes Yes ⤷  Sign Up ⤷  Sign Up ⤷  Sign Up
Cubist Pharms Llc DIFICID fidaxomicin FOR SUSPENSION;ORAL 213138-001 Jan 24, 2020 RX Yes Yes ⤷  Sign Up ⤷  Sign Up Y ⤷  Sign Up
Cubist Pharms Llc DIFICID fidaxomicin TABLET;ORAL 201699-001 May 27, 2011 RX Yes Yes ⤷  Sign Up ⤷  Sign Up Y ⤷  Sign Up
Cubist Pharms Llc DIFICID fidaxomicin TABLET;ORAL 201699-001 May 27, 2011 RX Yes Yes ⤷  Sign Up ⤷  Sign Up ⤷  Sign Up
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Exclusivity Expiration

EU/EMA Drug Approvals for DIFICID

Company Drugname Inn Product Number / Indication Status Generic Biosimilar Orphan Marketing Authorisation Marketing Refusal
Tillotts Pharma GmbH Dificlir fidaxomicin EMEA/H/C/002087
Dificlir film-coated tablets is indicated for the treatment of Clostridioides difficile infections (CDI) also known as C. difficile-associated diarrhoea (CDAD) in adult and paediatric patients with a body weight of at least 12.5 kg.Consideration should be given to official guidelines on the appropriate use of antibacterial agents.Dificlir granules for oral suspension is indicated for the treatment of Clostridioides  difficile infections (CDI) also known as C. difficile-associated diarrhoea (CDAD) in adults and paediatric patients from birth to < 18 years of age.Consideration should be given to official guidelines on the appropriate use of antibacterial agents.
Authorised no no no 2011-12-05
>Company >Drugname >Inn >Product Number / Indication >Status >Generic >Biosimilar >Orphan >Marketing Authorisation >Marketing Refusal

International Patents for DIFICID

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

Country Patent Number Title Estimated Expiration
Hungary E031581 ⤷  Sign Up
Australia 2014207083 Composition of tiacumicin compounds ⤷  Sign Up
China 102503994 Method of treating clostridium difficile-associated diarrhea ⤷  Sign Up
Spain 2608046 ⤷  Sign Up
Luxembourg 92684 ⤷  Sign Up
>Country >Patent Number >Title >Estimated Expiration

Supplementary Protection Certificates for DIFICID

Patent Number Supplementary Protection Certificate SPC Country SPC Expiration SPC Description
1539977 C20150013 00220 Estonia ⤷  Sign Up PRODUCT NAME: FIDAKSOMITSIIN;REG NO/DATE: EU/1/11/733 07.12.2011
1539977 1590020-2 Sweden ⤷  Sign Up PRODUCT NAME: FIDAXOMICIN; TOTAL VALIDITY PERIOD: 16 JULY 2023 THROUGH 6 JUNE 2027
1539977 C01539977/01 Switzerland ⤷  Sign Up FUSION; FORMER OWNER: MERCK SHARP AND DOHME CORP., US
1539977 2015/019 Ireland ⤷  Sign Up PRODUCT NAME: FIDAXOMICIN OR A PHARMACEUTICALLY ACCEPTABLE SALT THEREOF; NAT REGISTRATION NO/DATE: EU/1/11/733/001-004 20111205; FIRST REGISTRATION NO/DATE: EU/1/11/733/001-004 20111205
1539977 C300727 Netherlands ⤷  Sign Up PRODUCT NAME: FIDAXOMICINE OF EEN FARMACEUTISCH AANVAARDBAAR ZOUT DAARVAN; REGISTRATION NO/DATE: EU/1/11/733/001-004 20111205
>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. 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.