Wavelength-shifting hairpin-forming probes
CA 2336489 C · Owner: Kramer, Fred R. · Inventors: Marras, Salvatore A. E.; Kramer, Fred R.; Tyagi, Sanjay
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Hairpin-forming oligonucleotide probes and primers are triple-labelled with a pair of florophores, a shorter wavelength harvester and a longer wavelength emitter, and a quencher. When the probes and primers are stimulated by light that excites the harvester, opening causes and increase in fluorescence by the emitter, while fluorescence from the harvester is continually suppressed. The probes and primers may be used for detection of nucleic acid targets in assays, including amplification assays. Assay kits are provided.
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 July 28, 1999 and granted May 3, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 28, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 28, 2021.
- 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.