Novel crude and crystalline forms of lercanidipine hydrochloride
CA 2399459 C · Owner: Bonifacio, Fausto · Inventors: Leonardi, Amedeo; Campana, Francesco; De Iasi, Gianluca
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention describes novel lercanidipine crude Forms (A) and (B) novel, lercanidipine hydrochloride crystalline Forms (I) and (II) obtained from said crude, Forms, novel crystalline Forms (III) and (IV) and lercanidipine solvates, and, pharmaceutical antihypertensive compositions containing as active agent at least one of, the lercanidipine hydrochloride crystalline Forms (I) - (IV) or lercanidipine solvates and, methods of use thereof
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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 August 6, 2002 and granted April 24, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 6, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 6, 2024.
- 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.