2'-substituted nucleosides and oligonucleotide derivatives
CA 2256765 A1 · Owner: Altmann, Karl-Heinz · Inventors: Moser, Heinz Ernst; Altmann, Karl-Heinz; Martin, Pierre
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to an oligonucleotide derivative which comprises at least one nucleoside building block of the formula (I). The invention furthermore relates to nucleoside building blocks intermediates and processes , for preparing the oligonucleotide derivatives and the nucleoside building blocks. The invention also relates to pharmaceutical compositions and to uses of the oligonucleotide derivatives and the nucleoside building blocks.
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. No grant is recorded for it in Canada; had it been granted, its 20-year term would have 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.