Compositions and methods for controlled release
CA 2464131 A1 · Owner: Waugh, Jacob M. · Inventors: Waugh, Jacob M.; Dake, Michael D.; Wong, Arthur H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Methods and compositions are provided for the controlled release of an active agent. The composition includes an oligonucleotide scaffold and a substantially complementary oligonucleotide factor. An active agent is attached to the oligonucleotide factor. The two oligonucleotides are differentially degradable, so that degradation of the scaffold occurs a faster rate than the degradation of the factor. As the scaffold degrades the factor , is released. The active agent can be a therapeutic agent or a diagnostic , agent.
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 October 17, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 17, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 17, 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.