Expired Canadian patentCanada
Method for producing biodegradable, functionalised polymer particles, and use of the same as medicament carriers
CA 2497255 C · Owner: Polybatics Limited · Inventors: Rehm, Bernd Helmut Adam
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method for producing biodegradable functionalised , polymer particles, and to the use of the same as medicament carriers.
Read the whole patent
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 August 22, 2003 and granted April 23, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 22, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 22, 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.
FiledAugust 22, 2003
GrantedApril 23, 2013
Term endedAugust 22, 2023
Patent numberCA 2497255 C
Classification (IPC)—
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.