Expired Canadian patentCanada
Novel oligoribonucleotide derivatives for specific inhibition of gene expression
CA 2453295 C · Owner: Huber, Jochen · Inventors: Neumann, Sandra; Uhlmann, Eugen; Huber, Jochen
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 oligoribonucleotide derivatives that have at the 3' , end, a 2'5'-linked oligoribonucleotide radical without a 5' phosphate radical and to their use for the targeted inhibition of gene expression.
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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 July 5, 2002 and granted September 25, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 5, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 5, 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.
FiledJuly 5, 2002
GrantedSeptember 25, 2012
Term endedJuly 5, 2022
Patent numberCA 2453295 C
Classification (IPC)C07H21/00 +2 more
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.