Novel lipid complexes for transferring at least a therapeutically active substance, in particular a polynucleotide into a target cell and use in gene therapy
CA 2263367 A1 · Owner: Bischoff, Rainer · Inventors: Bischoff, Rainer; Heissler, Denis; Nazih, Abdesslame
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a complex comprising at least a lipid and at least a therapeutically active substance useful for transferring said substance into a target cell characterised in that said lipid is of formula (I): in which: n1 n2, identical or different are whole numbers between 0 and 1; R1 R2, identical or different are: a) selected among the group consisting of a hydrogen atom and alkyl radicals with 1 to 6 carbon atoms optionally substituted independently of one another, by a hydroxyl radical; or b) in one particular case for which n1 = n2 = 1 R1 and R2 can form together a divalent alkylene chain of 2 to 3 carbon atoms (C2-C3); R3 R4, identical or different are alkyl radicals of 1 …
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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 June 11, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 11, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 11, 2020.
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Timeline
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.