Controlled absorption naproxen formulation for once-daily administration
CA 2034096 C · Owner: Mulligan, Seamus · Inventors: Mulligan, Seamus; Bourke, Edward Anthony
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A naproxen formulation for oral administration on a once-daily basis comprises a first portion of the naproxen formulated in a multiparticulate pellet form designed to release the drug at a rate sufficient to maintain therapeutically effective blood levels substantially over 24 hours when administered each day on a once-daily basis and optionally, a second portion of the naproxen formulated so as to release the drug promptly following administration so as to obtain a relatively immediate therapeutic response.
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 January 14, 1991 and granted March 26, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 14, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 14, 2013.
- 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.