Antibiotic microspheres for treatment of infections and osteomyelitis
CA 2497973 C · Owner: Ambrose, Catherine G. · Inventors: Ambrose, Catherine G.; Mikos, Antonios G.; Clyburn, Terry A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Biodegradable microspheres implanted, injected or otherwise placed totally or , partially within the body are capable of near-linear controlled release of an antibiotic for a predetermined period of time for the treatment and prevention of infections involving the body. The microspheres are formed of polylactic-coglycolic acid (PLGA) and an effective amount of antibiotic sufficient to produce bactericidal levels in body tissues and may or may not include , polyethylene glycol (PEG). The microspheres exhibit near-linear delivery of the antibiotic for at least 4 weeks at levels exceeding the minimum inhibitory concentration (MIC) for organisms commonly found to be the cause of infections.
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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 September 5, 2003 and granted November 6, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 5, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 5, 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
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.