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Generated: October 24, 2017

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Details for Patent: 4,199,574

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Summary for Patent: 4,199,574

Title: Methods and compositions for treating viral infections and guanine acyclic nucleosides
Abstract:9-Hydroxyethoxymethyl (and related) derivatives of certain 6-, and 2,6-substituted purines have been discovered to have potent anti-viral activities. Novel compounds and their pharmaceutically acceptable salts, pharmaceutical formulation containing the compounds of this invention, and the treatment of viral infections with these formulations are all disclosed. 9-(2-hydroxyethoxymethyl) guanine and 2-amino-9-(2-hydroxyethoxymethyl)adenine are examples of especially active compounds of this invention.
Inventor(s): Schaeffer; Howard J. (Richmond, VA)
Assignee: Burroughs Wellcome Co. (Research Triangle Park, NC)
Application Number:05/662,900
Patent Claim Types:
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Compound; Use; Composition; Dosage form;

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Foreign Priority and PCT Information for Patent: 4,199,574

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
United Kingdom38278/74Sep 2, 1974

International Patent Family for Patent: 4,199,574

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Argentina212914► Subscribe
Argentina220299► Subscribe
Argentina220508► Subscribe
Argentina220885► Subscribe
Argentina228232► Subscribe
Argentina228281► Subscribe
Argentina228282► Subscribe
Argentina228283► Subscribe
AustriaA610377► 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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Serving leading biopharmaceutical companies globally:

US Department of Justice
Federal Trade Commission
Fish and Richardson
Boehringer Ingelheim

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