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Generated: October 20, 2017
Which patents cover Viagra, and when can generic versions of Viagra launch?
Viagra is a drug marketed by Pfizer Inc and is included in one NDA. There is one patent protecting this drug and two Paragraph IV challenges.| US Patents: | 1 |
| Applicants: | 1 |
| NDAs: | 1 |
| Suppliers / Packagers: see list | 10 |
| Bulk Api Vendors: see list | 113 |
| Clinical Trials: see list | 120 |
| Patent Applications: see list | 3,142 |
| Formulation / Manufacturing: | see details |
| Drug Prices: | see details |
| DailyMed Link: | VIAGRA at DailyMed |
| Drug Class | Phosphodiesterase 5 Inhibitor |
| Mechanism of Action | Phosphodiesterase 5 Inhibitors |
| Applicant | Tradename | Generic Name | Dosage | NDA | Approval Date | TE | Type | RLD | RS | Patent No. | Patent Expiration | Product | Substance | Delist Req. | Exclusivity Expiration |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pfizer Inc | VIAGRA | sildenafil citrate | TABLET;ORAL | 020895-001 | Mar 27, 1998 | RX | Yes | No | ► Subscribe | ► Subscribe | Y | ► Subscribe | |||
Pfizer Inc | VIAGRA | sildenafil citrate | TABLET;ORAL | 020895-002 | Mar 27, 1998 | RX | Yes | No | ► Subscribe | ► Subscribe | Y | ► Subscribe | |||
Pfizer Inc | VIAGRA | sildenafil citrate | TABLET;ORAL | 020895-003 | Mar 27, 1998 | RX | Yes | Yes | ► Subscribe | ► Subscribe | Y | ► Subscribe | |||
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| Applicant | Tradename | Generic Name | Dosage | NDA | Approval Date | Patent No. | Patent Expiration | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pfizer Inc | VIAGRA | sildenafil citrate | TABLET;ORAL | 020895-001 | Mar 27, 1998 | ► Subscribe | ► Subscribe | ||||||||
Pfizer Inc | VIAGRA | sildenafil citrate | TABLET;ORAL | 020895-003 | Mar 27, 1998 | ► Subscribe | ► Subscribe | ||||||||
Pfizer Inc | VIAGRA | sildenafil citrate | TABLET;ORAL | 020895-002 | Mar 27, 1998 | ► Subscribe | ► Subscribe | ||||||||
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| Drugname | Dosage | Strength | RLD | Submissiondate |
|---|---|---|---|---|
| sildenafil citrate | Tablets | 25 mg and 50 mg | Viagra | 11/19/2004 |
| sildenafil citrate | Tablets | 100 mg | Viagra | 10/25/2004 |
| Country | Document Number | Estimated Expiration | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| New Zealand | 266463 | ► Subscribe | |||||||||||||
| Norway | 954757 | ► Subscribe | |||||||||||||
| Czech Republic | 9503242 | ► Subscribe | |||||||||||||
| China | 1124926 | ► Subscribe | |||||||||||||
| World Intellectual Property Organization (WIPO) | 9428902 | ► Subscribe | |||||||||||||
| South Korea | 100262926 | ► Subscribe | |||||||||||||
| New Zealand | 314110 | ► Subscribe | |||||||||||||
| Hungary | 227877 | ► Subscribe | |||||||||||||
| Hungary | 9501933 | ► Subscribe | |||||||||||||
| China | 1742731 | ► Subscribe | |||||||||||||
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The estimated expiration dates shown above are derived by simply adding 20 years to the priority date.
Due to the complexity of determining patent expirations even in a single country, compounded by the diversity of global patent laws,
it is advisable to have patent counsel verify freedom to operate.
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| Supplementary Protection Certificate | SPC Country | SPC Expiration | SPC Description | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| C/GB99/004 | United Kingdom | ► Subscribe | PRODUCT NAME: SILDENAFIL AND PHARMACEUTICALLY ACCEPTABLE SALTS THEREOF, IN PARTICULAR THE CITRATE SALT; REGISTERED: CH 54642 19980622; UK EU/1/98/077/001 19980914; UK EU/1/98/077/002 19980914; UK EU/1/98/077/003 19980914; UK EU/1/98/077/004 19980914; UK EU/1/98/077/005 19980914; UK EU/1/98/077/006 19980914; UK EU/1/98/077/007 19980914; UK EU/1/98/077/008 19980914; UK EU/1/98/077/009 19980914; UK EU/1/98/077/010 19980914; UK EU/1/98/077/011 19980914; UK EU/1/98/077/012 19980914 | ||||||||||||
| 1999 | Austria | ► Subscribe | PRODUCT NAME: ''SILDENAFIL'' UND DESSEN PHARMAZEUTISCH ANNEHMBAREN SALZE, EINSCHLIESSLICH DES CITRATS; NAT. REGISTRATION NO/DATE: EU/1/98/077/001 - EU/1/98/077/012 19980914; FIRST REGISTRATION: LI 54642 01-54642 03 19980622 | ||||||||||||
| 90005 | Netherlands | ► Subscribe | PRODUCT NAME: SILDENAFIL, DESGEWENST IN DE VORM VAN EEN FARMACEUTISCH AAN- VAARDBAAR ZOUT, IN HET BIJZONDER SILDENAFIL CITRAAT; NATL REGISTRATION NO/DATE: EU/1/98/077/001-012 19980914; FIRST REGISTRATION: CH 54642 19980622 | ||||||||||||
| C0007 | Belgium | ► Subscribe | PRODUCT NAME: SILDENAFIL, NATL REGISTRATION NO/DATE: EU/1/98/077/001 19980914; FIRST REGISTRATION: CH 54642 19980622 | ||||||||||||
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Serving leading biopharmaceutical companies globally:
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 verifification 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.
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