Use of biodegradable microspheres that release an anticancer agent for treating gliobastoma
CA 2388656 C · Owner: Menei, Philippe · Inventors: Menei, Philippe; Benoit, Jean-Pierre; Faisant, Nathalie
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relate to the use of biodegradable microspheres that release a radiosensitizing anticancer agent for producing a medicament to be used simultaneously with separately from, or spread over time with a radiotherapy for treating glioblastoma. The use of said biodegradable microspheres according to the invention results in a patient survival time of least 90 weeks a therapeutically effective concentration being maintained in the parenchymatous area throughout this time. The microspheres use preferably contain 5-fluorouracile coated with poly(d-l-lactic acid-co-glycolic acid). The microspheres are implanted in the walls of the operation site following the exeresis of the tumor by …
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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 May 17, 2000 and granted April 26, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 17, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 17, 2022.
- 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
Timeline From CIPO dates
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.