Last Updated: May 11, 2026

Details for Patent: 4,339,445

Name: Drug Patent Intelligence for US Patent 4339445
Creator: DrugPatentWatch
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Summary for Patent: 4,339,445

Title:	Method for combating virus infection
Abstract:	A method for the selective treatment of virus infections in animals and man and a method of treating cancer caused by viruses, comprising administering to a host so infected a therapeutically effective amount of phosphonoformic acid or a physiologically acceptable salt thereof.
Inventor(s):	Bertil F. H. Eriksson, Ake J. E. Helgstrand, Alfons Misiorny, Goran B. Stening, Stig-Ake A. Stridh
Assignee:	AstraZeneca AB
Application Number:	US05/971,931
Patent Claim Types: see list of patent claims	Use;

Drugs Protected by US Patent 4,339,445

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Applicant	Tradename	Generic Name	Dosage	NDA	Approval Date	TE	Type	RLD	RS	Patent No.	Patent Expiration	Product	Substance	Delist Req.	Patented / Exclusive Use	Submissiondate
>Applicant	>Tradename	>Generic Name	>Dosage	>NDA	>Approval Date	>TE	>Type	>RLD	>RS	>Patent No.	>Patent Expiration	>Product	>Substance	>Delist Req.	>Patented / Exclusive Use	>Submissiondate

Foreign Priority and PCT Information for Patent: 4,339,445

Foriegn Application Priority Data
Foreign Country	Foreign Patent Number	Foreign Patent Date
Sweden	7607496	Jul 1, 1976

International Family Members for US Patent 4,339,445

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Country	Patent Number	Estimated Expiration	Supplementary Protection Certificate	SPC Country	SPC Expiration
Austria	369014	⤷ Start Trial
Austria	A465477	⤷ Start Trial
Australia	2650577	⤷ Start Trial
Australia	510809	⤷ Start Trial
Belgium	856355	⤷ Start Trial
Bulgaria	60834	⤷ Start Trial
Canada	1077848	⤷ Start Trial
>Country	>Patent Number	>Estimated Expiration	>Supplementary Protection Certificate	>SPC Country	>SPC Expiration

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