DrugPatentWatch Database Preview

VIAGRA Drug Profile

« Back to Dashboard

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.

This drug has forty-five patent family members in twenty-six countries.

The generic ingredient in VIAGRA is sildenafil citrate. There are twenty drug master file entries for this compound. Forty-three suppliers are listed for this compound. Additional details are available on the sildenafil citrate profile page.

Summary for VIAGRA

International Patents:	45
US Patents:	1
Applicants:	1
NDAs:	1
Suppliers / Packagers:	11
Bulk Api Vendors:	71
Clinical Trials:	130
Formulation / Manufacturing:	see details
Drug Prices:	Drug price information for VIAGRA
Drug Sales Revenues:	Drug sales revenues for VIAGRA
Patent Litigation and PTAB cases:	See patent lawsuits and PTAB cases for VIAGRA
Prior Art and Litigation Support	Order Prior Art and Litigation support for VIAGRA
DailyMed Link:	VIAGRA at DailyMed

Pharmacology for VIAGRA

Drug Class	Phosphodiesterase 5 Inhibitor
Mechanism of Action	Phosphodiesterase 5 Inhibitors

Medical Subject Heading (MeSH) Categories for VIAGRA

Phosphodiesterase 5 Inhibitors

Urological Agents

Vasodilator Agents

US Patents and Regulatory Information for VIAGRA

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	AB	RX	Yes	No					Y
Pfizer Inc	VIAGRA	sildenafil citrate	TABLET;ORAL	020895-002	Mar 27, 1998	AB	RX	Yes	No					Y
Pfizer Inc	VIAGRA	sildenafil citrate	TABLET;ORAL	020895-003	Mar 27, 1998	AB	RX	Yes	Yes					Y

Expired US Patents for VIAGRA

Applicant	Tradename	Generic Name	Dosage	NDA	Approval Date	Patent No.	Patent Expiration
Pfizer Inc	VIAGRA	sildenafil citrate	TABLET;ORAL	020895-003	Mar 27, 1998
Pfizer Inc	VIAGRA	sildenafil citrate	TABLET;ORAL	020895-001	Mar 27, 1998
Pfizer Inc	VIAGRA	sildenafil citrate	TABLET;ORAL	020895-002	Mar 27, 1998

Paragraph IV (Patent) Challenges for VIAGRA

Drugname	Dosage	Strength	RLD	Date
	Tablets	25 mg and 50 mg
	Tablets	100 mg

International Patents for VIAGRA

Country	Patent Number	Estimated Expiration
China	1124926
Norway	325558
Hungary	227877
World Intellectual Property Organization (WIPO)	9428902
Japan	H09503996

Supplementary Protection Certificates for VIAGRA

Patent Number	Supplementary Protection Certificate	SPC Country	SPC Expiration	SPC Description
0463756	SPC/GB99/004	United Kingdom		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
0463756	99C0007	Belgium		PRODUCT NAME: SILDENAFIL, NATL REGISTRATION NO/DATE: EU/1/98/077/001 19980914; FIRST REGISTRATION: CH 54642 19980622
0463756	5/1999	Austria		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
0463756	C990005	Netherlands		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