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Serving leading biopharmaceutical companies globally:

Boehringer Ingelheim
Johnson and Johnson
Daiichi Sankyo
Harvard Business School

Generated: November 23, 2017

DrugPatentWatch Database Preview

Details for Patent: 5,565,447

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Summary for Patent: 5,565,447

Title: Indole derivatives
Abstract:A compound of formula (I) ##STR1## wherein R.sup.1 and R.sup.2 each represents a hydrogen atom or an alkyl group, Z represents a ring selected from: ##STR2## in which n represents 4, 5 or 6; ##STR3## in which R.sup.3 represents hydrogen or an alkyl group and R.sup.4 represents an alkyl, methoxy benzyl or R.sup.5 NHCO group, R.sup.5 being an alkyl group; and ##STR4## in which R.sup.6 represents an alkyl group. and pharmaceutically acceptable salts thereof are useful in the treatment of migraine and other conditions. They are prepares by decarboxylation of the corresponding indolyl 2-carboxylic acid.
Inventor(s): Forner; Dolors F. (Barcelona, ES), Duran; Carles P. (Barcelona, ES), Soto; Jose P. (Barcelona, ES), Noverola; Armando V. (Barcelona, ES), Mauri; Jacinto M. (Barcelona, ES)
Assignee: Laboratorios Almirall S.A. (ES)
Application Number:08/437,682
Patent Claim Types:
see list of patent claims
Compound; Composition; Use;

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Foreign Priority and PCT Information for Patent: 5,565,447

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
United Kingdom9216009Jul 28, 1992

International Patent Family for Patent: 5,565,447

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Finland941413► Subscribe
Finland109998► Subscribe
United Kingdom9216009► Subscribe
Greece3029915► Subscribe
Hong Kong1011680► Subscribe
Canada2120028► Subscribe
China1087629► Subscribe
China1035179► Subscribe
Czech Republic9400664► Subscribe
Czech Republic282659► 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:

Express Scripts
Federal Trade Commission
Chinese Patent Office
Fish and Richardson

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