Transporters comprising spaced arginine moieties
CA 2437983 C · Owner: Kreider, Erik L. · Inventors: Rothbard, Jonathan B.; Kreider, Erik L.; Wender, Paul A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides compositions and methods for enhancing transport of biologically active compounds across biological membranes and across and into animal epithelial or endothelial tissues. The composition includes a biologically active agent and a transport moiety. The transport moiety includes a structure selected from the group consisting of (ZYZ)nZ (ZY)nZ, (ZYY)nZ and (ZYYY)nZ. Subunit "Z" is L-arginine or D-arginine and , subunit "Y" is an amino acid that does not comprise an amidino or guanidino moiety. Subscript "n" is an integer ranging from 2 to 10. The method for enhancing transport involves the administration of the aforementioned composition.
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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 February 14, 2002 and granted October 25, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 14, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 14, 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
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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.