Pharmaceutical compositions comprising estetrol derivatives for use in cancer therapy
CA 2503549 C · Owner: Pantarhei Bioscience B.V. · Inventors: Coelingh Bennink, Herman Jan Tijmen; Bunschoten, Evert Johannes
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a method of treating or preventing estrogensuppressed tumours in a mammal, said method comprising the administration of a therapeutically effective amount of an estrogenic component to said mammal wherein the estrogenic component is selected from the group consisting of: substances represented by the following formula (I) in which formula R1 R2, R3, R4, independently are a hydrogen atom a hydroxyl group or an alkoxy group , with 1-5 carbon atoms; precursors capable of liberating a substance according to the aforementioned formula when used in the present method; and mixtures of one or more of the aforementioned substances and/or precursors. The …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed October 23, 2003 and granted July 10, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 23, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 23, 2025.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
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Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.