Combination dosage form comprising cetirizine and pseudoephedrine
CA 2206233 C · Owner: Mcneil-Ppc, Inc. · Inventors: Johnson, Barbara A.; Oksanen, Cynthia A.; Korsmeyer, Richard W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A dosage form containing cetirizine as an immediate release component and pseudoephedrine or a pharmaceutically acceptable salt thereof as a controlled release component. A portion of the pseudoephedrine can also be incorporated as an immediate release component. The dosage form is free of alcohols having a molecular weight lower than 100 and reactive derivatives thereof.
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 May 27, 1997 and granted June 6, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 27, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 27, 2019.
- 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.